CN208015069U - Multipath pulse laser closes the Bladder stone system of beam - Google Patents
Multipath pulse laser closes the Bladder stone system of beam Download PDFInfo
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- CN208015069U CN208015069U CN201820181623.7U CN201820181623U CN208015069U CN 208015069 U CN208015069 U CN 208015069U CN 201820181623 U CN201820181623 U CN 201820181623U CN 208015069 U CN208015069 U CN 208015069U
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Abstract
The utility model discloses the Bladder stone systems that a kind of multipath pulse laser closes beam comprising multiple laser resonant cavities, condenser lens and output optical fibre, resonant cavity include successively by rear to preceding along the Effect of Back-Cavity Mirror of coaxial placement, laser pump cavity and outgoing mirror；The multiple resonant cavity side by side parallel setting, the front of multiple resonator outgoing mirrors is accordingly equipped with the first reflecting plate, the second reflecting plate ... and N reflecting plates, second reflecting plate ... and N reflecting plates respectively overlap the output beam of resonant cavity after reflection with the first resonator optical axis direction, the front that condenser lens is located at the first reflecting plate is used to receive the light beam that the first reflecting plate exports, and the input terminal of output optical fibre is located at the focal point of condenser lens for the light beam after collectiong focusing lens focus.The utility model has the following effects that：Bladder stone output power can be improved, and component required for conjunction beam is few, adjusts and easy to maintenance in the core diameter for not increasing output optical fibre.
Description
Technical field
The utility model is related to high power solid state laser technical fields, and in particular to a kind of multipath pulse laser closes beam
Bladder stone system.
Background technology
Holmium laser is to use Cr, Tm, Ho: the pulse laser that YAG crystal makes, 2.1 μm of output wavelength are in water
Absorption peak, this laser are shallow to the penetration depth of tissue, have very high surgical precision, and to eye-safe, in addition
Bladder stone can also be transmitted by optical fiber, thus medically it be a kind of to do the light source of surgery well.Currently, Bladder stone is
Through being widely used in the fields such as Urology Surgery, dept. of dermatology, gynemetrics, Gastroenterology dept., department of general surgery and ENT dept..
But the lasing threshold of Bladder stone crystal is high, and thermal conductivity is low, when working under the conditions of Gao Zhongying, the thermal lens of crystal
Effect is apparent, due to these features so that the output power of single laser crystal can not possibly be higher.In order to obtain high-output power
Titanium laser therapeutic equipment, light extraction, multichannel light are coupled into same people's generally use multiple path laser after merging light path in turn
The method of optical fiber improves total output power.
To obtain High-power holmium laser with mini output, area research personnel have been carried out relevant research, such as utility model
Patent：The simple hectowatt grade Bladder stone system (application No. is 201621271056.1) of light path, invention content are：A kind of light path
Simple hectowatt grade Bladder stone system, including four same Bladder stone resonant cavities and its plus lens and an optical-fiber bundling
Device, optical-fiber bundling device have 4 input optical fibres and 1 output optical fibre, the incidence end of four incident opticals to be individually positioned in four remittances
The focal point of poly- lens, after bundling device, 4 beam Bladder stones are exported from output optical fibre, defeated to obtain powerful Bladder stone
Go out.But due to being limited to fusion techniques, if it is desired to by above-mentioned art solutions obtain loss less than 10% conjunction beam as a result,
It must assure that the core diameter of output optical fibre is 1.8~2.2 times of the core diameter of input optical fibre.But it is required in the core diameter to output optical fibre
Medical application in, it is this improve Bladder stone output power method just be not suitable for.
Utility model content
The utility model aim be the shortcomings that overcoming the prior art with it is insufficient, provide component required for a kind of conjunction beam
Few, control signal is simple, it can be achieved that arbitrary multipath pulse laser closes the Bladder stone system of beam.
To achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of multipath pulse laser closes the Bladder stone system of beam comprising multiple laser resonant cavities, condenser lens and defeated
Go out optical fiber, laser resonant cavity includes successively by rear to preceding along the Effect of Back-Cavity Mirror of coaxial placement, laser pump cavity and outgoing mirror；
The multiple resonant cavity side by side parallel setting, the multiple resonant cavity are respectively from left to right the first resonance successively
Chamber, the second resonant cavity ... and N resonant cavities, first resonant cavity, the second resonant cavity ... and N resonant cavities outgoing mirror
Front be accordingly equipped with the first reflecting plate, the second reflecting plate ... and N reflecting plates, the first reflecting plate, the second reflection
Plate ... and N reflecting plates respectively with the optical axis of corresponding resonant cavity angle at 45 °；Before the reflecting surface of first reflecting plate is towards the right side
The reflecting surface of side, the second reflecting plate ... and N reflecting plates is towards left back；
First reflecting plate, the second reflecting plate ... and N reflecting plates are equidistantly provided in same circumferencial direction N number of logical respectively
Hole, N number of through-hole are along the circumferential direction followed successively by first through hole, the second through-hole ... and N through-holes, and the first of first reflecting plate
The light beam that through-hole is used to export by the first resonant cavity, first reflecting plate are equipped in remaining through hole in addition to first through hole
Secondary reflection mirror of the reflecting surface towards right front, the second through hole of second reflecting plate be equipped with reflecting surface towards left back and
For reflecting the primary event mirror ... ... of the second resonant cavity output beam similarly, the through holes N of the N reflecting plates are set
There are primary event mirror of the reflecting surface towards left back and for reflecting N resonant cavity output beams, N to be greater than or equal to 2；
The front that condenser lens is located at the first reflecting plate is used to receive the light beam that the first reflecting plate exports, second resonance
The light beam that chamber ... and N resonant cavities project can successively after primary event mirror and secondary reflection mirror again with the first resonant cavity light
Condenser lens is incident in the direction of overlapping of axles, and the focal point that the input terminal of output optical fibre is located at condenser lens is saturating for collectiong focusing
Light beam after mirror focusing.
The action principle of the utility model：In the present invention, in the initial state, the first of each reflecting plate
The hole heart of through-hole is all on corresponding resonator optical axis, and after start-up operation, each resonant cavity according to work schedule, there is sequence successively
Ground recycles emission pulse laser.Assuming that the working frequency of each resonant cavity is H in system, the rotation frequency of each reflecting plate is also
H, that is, each reflecting plate rotates in an identical manner.Assuming that having N number of through-hole on each reflecting plate, then each through-hole is by corresponding to
It is about t=1/ (HN) the time required to optical axis, it is assumed that a pulsed light beam duration is τ, in general, τ <<t.It is extended when passing through
It sets, the pulse laser duration of the first resonant cavity is allowed to be in the first through hole of each reflecting plate by corresponding resonator optical axis
When in time range, after first through hole of the pulse laser by the first reflecting plate that the first resonant cavity generates, it is directly incident on poly-
Focus lens are then focused into the focal point in the lens；It is in each reflecting plate when the pulse laser duration of the second resonant cavity
When second through-hole is by the time range of corresponding resonator optical axis, which is incident on the second through-hole of the second reflecting plate
Primary event mirror, the secondary reflection mirror being incident on after primary event on the second through-hole of the first reflecting plate, through secondary reflection
Afterwards, condenser lens is incident on the direction overlapped with the first resonator optical axis；When the pulse laser duration of third resonant cavity
When third through-hole in each reflecting plate is by the time range of corresponding resonator optical axis, which is incident on third reflection
On the primary event mirror of the third through-hole of plate, by the third through-hole of the second reflecting plate after primary event, it is anti-to be incident on first
It penetrates in the secondary reflection mirror on the third through-hole of plate, it is incident with the direction overlapped with the first resonator optical axis after secondary reflection
To condenser lens；..., similarly, the N through-holes process pair of each reflecting plate is in when the pulse laser duration of N resonant cavities
When in the time range for the resonator optical axis answered, on the primary event mirror for the N through-holes which is incident on N reflecting plates, warp
The N through-holes that the second reflecting plates of N-1 ... are passed through after primary event mirror, are incident on the first reflecting plate in the secondary of N through-holes
On speculum, condenser lens is incident on the direction overlapped with the first resonator optical axis again after reflection.
Each reflecting plate is the center rotating around itself plate face, the reflection on each through-hole during the work time
Mirror is not influenced the reflection direction of light beam by rotating.Usually described each through-hole is by corresponding optical axis required time t>10ms,
Bladder stone pulse duration τ is usually less than 1ms.By taking the second resonant cavity as an example, when the pulse laser of the second resonant cavity continues
Between when the second through-hole of its reflecting plate is undergone in the time range of its resonator optical axis, the light beam emitted can be by the through-hole
On speculum reflection, the pulse laser transmission direction turn over 90 ° to the left after, the second through-hole for being incident on the first reflecting plate
On speculum on, through secondary reflection, the transmission direction of the pulse laser is made to turn right 90 °, transmission direction becomes in order to the
One resonator optical axis is completely superposed, that is, the pulse laser of the second resonant cavity output is after 2 secondary reflections, transmission direction and the
The light path that one resonant cavity output beam enters before condenser lens is completely superposed.
Multiple resonant cavities successively according to work schedule, have and sequentially recycle emission pulse laser, the rotation of each reflecting plate
Frequency is identical as resonant cavity working frequency, and the pulse duration of N resonant cavities is allowed to be in N through-holes process pair on each reflecting plate
When answering in the time range of optical axis, the light path of the second to N resonant cavities pulse laser sent out before entering a focusing lens and the
The light path of one resonant cavity pulse laser is completely superposed, and it is same to be achieved that the roads N pulse laser by certain sequential converges in condenser lens
One focal point, total output power are the sum of the roads N pulsed laser powers.So as to the case where not increasing output optical fibre core diameter
Under, improve Bladder stone output power.
In conclusion the first resonant cavity transmitting pulse laser be directly output to by the first through hole of the first reflecting plate it is poly-
Focus lens, the second resonant cavity until the light beam that projects of N resonant cavities by primary event mirror and secondary reflection mirror after, then with the
Condenser lens is incident in the direction that one resonator optical axis overlaps, and multiple resonant cavities work by work schedule, to realize multichannel
Pulse laser is coupled into same root output optical fibre, that is, realizes the conjunction beam of multipath pulse laser, can not increase output optical fibre
In the case of core diameter, Bladder stone output power is improved, and component required for conjunction beam is few, the control signal of each reflecting plate
It is identical, therefore it is simple to control signal.
As a kind of improvement of the utility model, first reflecting plate, the second reflecting plate ... and N reflecting plates are distinguished
By driving element driving around the center axis rotation of circumference where N number of through-hole.
Further, the driving element is servo motor.
As a kind of improvement of the utility model, the Effect of Back-Cavity Mirror is the speculum that can be totally reflected to Bladder stone.
Further, the laser pump cavity includes Bladder stone crystal and xenon lamp, and the pump light that xenon lamp is sent out is incident on Bladder stone
Laser is generated after crystal.
As a kind of improvement of the utility model, the outgoing mirror be 70~85% to Bladder stone reflectivity speculum.
As a kind of improvement of the utility model, the length of the output optical fibre is no less than 3m.
Further, the numerical value of the N can be selected according to the requirement of output power.
Compared with prior art, the utility model has the following advantages：
1, the front of each laser resonant cavity only needs one reflecting plate of setting, can not increase output optical fibre core diameter
In the case of, Bladder stone output power is improved, and component required for conjunction beam is few, adjusts and easy to maintenance.
2, it due to the ingehious design of multiple reflecting plates, in the conjunction beam of multi-path laser, is watched with the control of identical signal is each
Motor is taken, to control each reflecting plate, control signal is simple, therefore control circuit is simple.
3, multipath pulse laser is incident on by certain sequential in condenser lens, the beam quality of combined beam light and the light beam of single channel
Identical in quality, in lens focus, the size of multi-path laser hot spot is such as single laser, therefore combined beam light is may be coupled to
In the optical fiber of the same core diameter of single laser.
4, according to the requirement of single laser resonant cavity output power and gross output, generally it is convenient to select participate in closing
The number of the laser resonant cavity of beam, to achieve the purpose that medical applications.
Description of the drawings
Fig. 1 is the schematic diagram for the Bladder stone system that the utility model multipath pulse laser closes beam；
Fig. 2 is the schematic diagram of reflecting plate when the first resonant cavity works in the utility model embodiment；
Fig. 3 is the schematic diagram of reflecting plate when the second resonant cavity works in the utility model embodiment；
Fig. 4 is the schematic diagram of reflecting plate when third resonant cavity works in the utility model embodiment；
Fig. 5 is the schematic diagram of reflecting plate when the 4th resonant cavity works in the utility model embodiment.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that described herein
Specific embodiment be used only for explaining the utility model, rather than the restriction to the utility model.It also should be noted that
For ease of description, it is illustrated only in attached drawing and the relevant part of the utility model rather than full content.
Embodiment
It should be noted that the orientation word such as involved "front", "rear", "left", "right" is for describing herein
The utility model structure connection relation, rather than the restriction to the utility model structure connection relation, herein in the utility model
Term used in the description be only for the purpose of describing specific embodiments that be not intended to limit this practicality new
Type.In the present embodiment, the numerical value of the N is 4.
It please refers to Fig.1 and Fig. 2, a kind of multipath pulse laser closes the Bladder stone system of beam comprising 4 laser resonant cavities
1, condenser lens 6 and output optical fibre 7, laser resonant cavity 1 include successively by rear to preceding along the Effect of Back-Cavity Mirror 11 of coaxial placement, gather
Optical cavity 12 and outgoing mirror 13；
4 resonant cavities, 1 side by side parallel is arranged, and 4 resonant cavities 1 are respectively from left to right the first resonant cavity successively
1a, the second resonant cavity 1b, third resonant cavity 1c and the 4th resonant cavity 1d, the first resonant cavity 1a, the second resonant cavity 1b, third resonance
The front of the outgoing mirror of chamber 1c and the 4th resonant cavity 1d is accordingly equipped with the first reflecting plate 2, the second reflecting plate 3, third reflecting plate 4
With the 4th reflecting plate 5, the first reflecting plate 2, the second reflecting plate 3, third reflecting plate 4 and the 4th reflecting plate 5 respectively with it is corresponding humorous
Shake 9 angle at 45 ° of optical axis of chamber 1；The reflecting surface of first reflecting plate is towards right front, the second reflecting plate ... and N reflecting plates
Reflecting surface towards left back；
First reflecting plate 2, the second reflecting plate 3, third reflecting plate 4 and the 4th reflecting plate 5 are respectively in same circumferencial direction etc.
Spacing is provided with 4 through-holes, and 4 through-holes are along the circumferential direction followed successively by first through hole 10, the second through-hole 20,30 four-way of third through-hole
Hole 40, the first through hole 10 of first reflecting plate 2 are used for the light beam by the first resonant cavity 1a outputs, first reflecting plate
2 are equipped with secondary reflection mirror 60 of the reflecting surface towards right front, second reflection in remaining through hole in addition to first through hole 10
Primary event of the reflecting surface towards left back and for reflecting the second resonant cavity 1b output beams is equipped at second through-hole 20 of plate 3
Mirror 50 is equipped with reflecting surface at the third through-hole 30 of the third reflecting plate 4 towards left back and for reflecting third resonant cavity 1c
The primary event mirror 50 of output beam is equipped with reflecting surface at the fourth hole 40 of the 4th reflecting plate 5 towards left back and use
In the primary event mirror 50 for reflecting the 4th resonant cavity 1d output beams；
Condenser lens 6 be located at the first reflecting plate 2 front be used for receives the first reflecting plate 2 export light beam, described second
The light beam that resonant cavity 1b, third resonant cavity 1c and the 4th resonant cavity 1d are projected can be successively through primary event mirror 50 and secondary reflection mirror
Condenser lens 6 is incident on the direction overlapped with the first resonator optical axis 9 again after 60, the input terminal of output optical fibre 7, which is located at, to be focused
The focal point of lens 6 is for the light beam after the focusing of collectiong focusing lens 6.
The action principle of the utility model：In the present invention, in the initial state, the first of each reflecting plate
The hole heart of through-hole is all on corresponding resonator optical axis, and after start-up operation, each resonant cavity according to work schedule, there is sequence successively
Ground recycles emission pulse laser.Assuming that the working frequency of each resonant cavity is H=10Hz, the rotation frequency of each reflecting plate in system
Rate is also H=10Hz, that is, each reflecting plate rotates in an identical manner.Due to have on each reflecting plate 4 be immediately adjacent to each other it is logical
Hole, then each through-hole is by about t=1/ (4H)=25ms, a pulsed light beam duration are the time required to corresponding to optical axis
τ=700us, τ <<t.It is arranged by time delay, allows the pulse laser duration of the first resonant cavity to be in the first of each reflecting plate and lead to
When hole is by the time range of corresponding resonator optical axis, the pulse laser that the first resonant cavity generates passes through the first reflecting plate
After first through hole, it is directly incident on condenser lens, is then focused into the focal point in the lens；When the pulse laser of the second resonant cavity
When duration is in the second through-hole of each reflecting plate by the time range of corresponding resonator optical axis, the second resonant cavity is penetrated
The light beam gone out is incident on the primary event mirror on the second through-hole of the second reflecting plate, and the first reflecting plate is incident on after primary event
The second through-hole on secondary reflection mirror focusing is incident on the direction overlapped with the first resonator optical axis after secondary reflection
Lens；When the third through-hole that the pulse laser duration of third resonant cavity is in each reflecting plate passes through corresponding resonator optical axis
Time range in when, third resonant cavity project light beam be incident on the primary event mirror on the third through-hole of third reflecting plate,
The third through-hole of the second reflecting plate, the secondary reflection being incident on the third through-hole of the first reflecting plate are passed through after primary event
Mirror is incident on condenser lens after secondary reflection with the direction overlapped with the first resonator optical axis, and similarly, the 4th resonant cavity is penetrated
Reflection of the pulse laser gone out successively through the primary event mirror on fourth hole on the 4th reflecting plate passes through the third and fourth reflection
The fourth hole of plate, through on the first reflecting plate on fourth hole secondary reflection mirror reflection after, then with the first resonator optical axis
It is incident on condenser lens in the direction of coincidence.
Each reflecting plate is the center rotating around itself plate face, the reflection on each through-hole during the work time
Mirror is not influenced the reflection direction of light beam by rotating.Since each through-hole is about by corresponding optical axis required time
25ms, Bladder stone pulse duration τ=700us.By taking the second resonant cavity as an example, when the pulse laser of the second resonant cavity continues
Between when the second through-hole of its reflecting plate is undergone in the time range of its resonator optical axis, the light beam emitted can be by the through-hole
On speculum reflection, the pulse laser transmission direction turn over 90 ° to the left after, the second through-hole for being incident on the first reflecting plate
On speculum on, through secondary reflection, the transmission direction of the pulse laser is made to turn right 90 °, transmission direction becomes with first
Resonator optical axis is completely superposed, that is, the pulse laser of the second resonant cavity output is after 2 secondary reflections, transmission direction and first
The light path that resonant cavity output beam enters before condenser lens is completely superposed.
4 resonant cavities have successively according to work schedule and sequentially recycle emission pulse laser, the rotation frequency of each reflecting plate
Rate and resonant cavity working frequency are all 10Hz, and the pulse laser duration of n-th resonant cavity is allowed to be in n-th on each reflecting plate
When through-hole is by the time range of corresponding optical axis, second pulse laser sent out to the 4th resonant cavity enters condenser lens
The preceding light path all with the pulse laser of the first resonant cavity is completely superposed, and is achieved that 4 road pulse lasers are converged in by certain sequential
The same focal point of condenser lens, total output power are the sum of 4 road pulsed laser powers.So as to not increase output optical fibre
Core diameter in the case of, improve Bladder stone output power.
In conclusion the first resonant cavity transmitting pulse laser be directly output to by the first through hole of the first reflecting plate it is poly-
Focus lens, the second resonant cavity until the light beam that projects of the 4th resonant cavity by primary event mirror and secondary reflection mirror after, then with the
Condenser lens is incident in the direction that one resonator optical axis overlaps, and multiple resonant cavities work according to work schedule successively, to realize
Multipath pulse laser is coupled into same root output optical fibre, that is, realizes the conjunction beam of multipath pulse laser, can not increase it is defeated
Go out in the case of the core diameter of optical fiber, improves Bladder stone output power, and component required for conjunction beam is few, the control of each reflecting plate
Signal processed is identical, therefore it is simple to control signal.
The applicant by test the data obtained show when the output power in each Bladder stone resonant cavity be more than 35W when,
The output power of output optical fibre is more than 100W, and valid certificates can be improved in the core diameter for not increasing output optical fibre
Bladder stone output power.
In the present embodiment, the first reflecting plate 2, the second reflecting plate 3, third reflecting plate 4 and the 4th reflecting plate 5 respectively can be by
The driving of driving element 8 rotates a circle around the center axis rotation of circumference where 4 through-holes and needs 100ms, 4 tunnel pulse laser beam combinings
Bladder stone system specific work process it is as follows：System when pre-burning 100ms, starts the first resonant cavity hair since original state
The first pulse laser is penetrated, 700us=0.7ms is lasted, when the end-of-pulsing, the first reflecting plate, the second reflecting plate, third reflecting plate
With the first through hole center of the 4th reflecting plate the radians of 1.4 π/100, therefore the first arteries and veins are only turned over from the position on corresponding optical axis
Impulse light directly can be output to condenser lens by the first through hole of the first reflecting plate, please refer to Fig.2；Referring to FIG. 3, using
After (100/4-0.70) ms, each reflecting plate turns to its second through-hole center and is located on corresponding optical axis, at this time the second resonant cavity
Emit the second pulse laser, equally lasts 0.7ms, when the end-of-pulsing, the first reflecting plate, the second reflecting plate, third reflecting plate
With the second through-hole center of the 4th reflecting plate the radians of 1.4 π/100, therefore the second arteries and veins are only turned over from the position on corresponding optical axis
After impulse light first passes through 90 ° of reflections of primary event mirror of the second through hole of the second reflecting plate, then by the second of the first reflecting plate
The secondary reflection mirror of through hole carries out 90 ° of reflections, by secondary reflection the second pulse laser again with the first resonant cavity light
It is incident on condenser lens in the direction of overlapping of axles；Referring to FIG. 4, after using (100/4-0.70) ms, each reflecting plate turns to
Its third through-hole center is located on corresponding optical axis, and then third resonant cavity emits third pulse laser, equally lasts 0.7ms, should
When end-of-pulsing, the first reflecting plate, the second reflecting plate, third reflecting plate and the 4th reflecting plate third through-hole center from positioned at pair
The position on optical axis is answered only to turn over the radians of 1.4 π/100, therefore third pulse laser first passes through at the third through-hole of third reflecting plate
The reflection of 90 ° of primary event mirror after, pass through the third through-hole of the second reflecting plate, then the third through-hole by the first reflecting plate two
Secondary mirror carries out 90 ° of reflections, by the third pulse laser side to be overlapped with the first resonator optical axis again of secondary reflection
To being incident on condenser lens；Referring to FIG. 5, after using (100/4-0.70) ms, each reflecting plate turns to its fourth hole
Center is located on corresponding optical axis, and then the 4th resonant cavity emits the 4th pulse laser, equally lasts 0.7ms, when the end-of-pulsing,
First reflecting plate, the second reflecting plate, third reflecting plate and the 4th reflecting plate fourth hole center from corresponding optical axis
Position only turns over the radians of 1.4 π/100, therefore the 4th pulse laser first passes through the primary event at the fourth hole of the 4th reflecting plate
After the reflection of 90 ° of mirror, pass through the fourth hole of the three the second reflecting plates, then the fourth hole by the first reflecting plate secondary reflection
Mirror carries out 90 ° of reflections, is incident on again with the direction overlapped with the first resonator optical axis by the 4th pulse laser of secondary reflection
Condenser lens.Using the working method of above-mentioned Bladder stone system, to realize the conjunction beam of multipath pulse laser.Single laser
The pulse duration of resonant cavity can be arranged in 0.36~0.80 range, according to above-mentioned working method, with the pulse persistance
The output of the single laser resonant cavity of time service can realize that multichannel closes beam, and to reach, suitably to adjust single laser humorous
It shakes the output of chamber and the requirement of gross output, can also easily select the number for participating in closing the laser resonant cavity of beam, with
Achieve the purpose that medical applications.
And in the present embodiment, the driving element 8 is servo motor, and servo motor has accuracy high and automation
Degree is high, can utilize slave computer respectively with watching on the first reflecting plate, the second reflecting plate, third reflecting plate and the 4th reflecting plate
It takes motor to be connected, passes through slave computer control servomotor, you can realize the first reflecting plate, the second reflecting plate, third reflecting plate
With automatically controlling for the 4th reflecting plate rotation, the degree of automation of equipment is improved；Each servo motor is controlled with identical signal,
To control each reflecting plate, therefore control circuit is simple.
In the present embodiment, the Effect of Back-Cavity Mirror 11 is the speculum that can be totally reflected to Bladder stone；The outgoing mirror 13 is pair
The speculum that Bladder stone reflectivity is 70~85%；The laser pump cavity 12 includes Bladder stone crystal and xenon lamp, the pump that xenon lamp is sent out
Pu light generates laser after being incident on Bladder stone crystal, and laser pump cavity section is ellipse, and a laser crystal is located at poly- with xenon lamp
In elliptical two focuses in optical cavity, after adding certain electric signal to the xenon lamp of laser pump cavity, the pump light that xenon lamp is sent out is straight
It is connecing or by optically focused cavity wall reflection after, generate laser after being incident on laser crystal.
In the present embodiment, in order to ensure that the facility of medical applications, the length of the output optical fibre 7 are no less than 3m.
In conclusion the utility model utilizes the ingehious design of multiple reflecting plates, each reflecting plate to be provided with multiple through-holes,
One of each reflecting plate other than the first reflecting plate through-hole is equipped with primary event mirror, and the first reflecting plate is in corresponding position
It is equipped with secondary reflection mirror, to be merged into the first resonant cavity by the output beam of multiple resonant cavities by reflection and across mode
Light path in, realize the conjunction beam of multi-path laser.Compared with prior art, the utility model only needs an output optical fibre can be realized
The conjunction beam of multipath pulse laser can improve Bladder stone output power in the core diameter for not increasing output optical fibre, and
Component is few required for closing beam, adjusts and easy to maintenance；Multipath pulse laser is incident on by certain sequential in condenser lens, closes beam
The beam quality of light is identical as the beam quality of single channel, in lens focus, the size of multi-path laser hot spot and single laser
Equally, therefore combined beam light is may be coupled in the optical fiber of the same core diameter of single laser；It can also be defeated according to single laser resonant cavity
Go out the requirement of power and gross output, generally it is convenient to select the number for participating in closing the laser resonant cavity of beam, to reach doctor
Treat the purpose of application.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (7)
1. a kind of multipath pulse laser closes the Bladder stone system of beam, including multiple laser resonant cavities, condenser lens and output light
Fibre, laser resonant cavity include successively by rear to preceding along the Effect of Back-Cavity Mirror of coaxial placement, laser pump cavity and outgoing mirror；
It is characterized in that：The setting of the multiple resonant cavity side by side parallel, the multiple resonant cavity are respectively from left to right the successively
One resonant cavity, the second resonant cavity ... and N resonant cavities, first resonant cavity, the second resonant cavity ... and N resonant cavities
The front of outgoing mirror is accordingly equipped with the first reflecting plate, the second reflecting plate ... and N reflecting plates, and the first reflecting plate, second are instead
That penetrates plate ... and N reflecting plates respectively with the optical axis of corresponding resonant cavity angle at 45 °；The reflecting surface of first reflecting plate is towards the right side
The reflecting surface of front, the second reflecting plate ... and N reflecting plates is towards left back；
First reflecting plate, the second reflecting plate ... and N reflecting plates are equidistantly provided with N number of through-hole, N in same circumferencial direction respectively
A through-hole is along the circumferential direction followed successively by first through hole, the second through-hole ... and N through-holes, the first through hole of first reflecting plate
Light beam for being exported by the first resonant cavity, first reflecting plate are equipped with reflection in remaining through hole in addition to first through hole
Second through hole of secondary reflection mirror of the face towards right front, second reflecting plate towards left back and is used for equipped with reflecting surface
Reflect the primary event mirror ... ... of the second resonant cavity output beam similarly, the through holes N of the N reflecting plates are equipped with anti-
Primary event mirror of the face towards left back and for reflecting N resonant cavity output beams is penetrated, N is greater than or equal to 2；
The front that condenser lens is located at the first reflecting plate is used to receive the light beam that the first reflecting plate exports, second resonance
The light beam that chamber ... and N resonant cavities project can successively after primary event mirror and secondary reflection mirror again with the first resonant cavity light
Condenser lens is incident in the direction of overlapping of axles, and the focal point that the input terminal of output optical fibre is located at condenser lens is saturating for collectiong focusing
Light beam after mirror focusing.
2. multipath pulse laser according to claim 1 closes the Bladder stone system of beam, it is characterised in that：First reflection
Plate, the second reflecting plate ... and N reflecting plates drive the center axis rotation around circumference where N number of through-hole by driving element respectively.
3. multipath pulse laser according to claim 2 closes the Bladder stone system of beam, it is characterised in that：The driving element
For servo motor.
4. multipath pulse laser according to claim 1 closes the Bladder stone system of beam, it is characterised in that：The Effect of Back-Cavity Mirror is
The speculum that Bladder stone can be totally reflected.
5. multipath pulse laser according to claim 1 closes the Bladder stone system of beam, it is characterised in that：The laser pump cavity packet
Bladder stone crystal and xenon lamp are included, the pump light that xenon lamp is sent out generates laser after being incident on Bladder stone crystal.
6. multipath pulse laser according to claim 1 closes the Bladder stone system of beam, it is characterised in that：The outgoing mirror is
The speculum for being 70~85% to Bladder stone reflectivity.
7. multipath pulse laser according to claim 1 closes the Bladder stone system of beam, it is characterised in that：The output optical fibre
Length be no less than 3m.
Priority Applications (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110867721A (en) * | 2019-12-02 | 2020-03-06 | 中国科学院合肥物质科学研究院 | Laser device |
| CN111289987A (en) * | 2018-12-06 | 2020-06-16 | 深圳市速腾聚创科技有限公司 | Laser radar apparatus and laser radar ranging system |
| CN114243442A (en) * | 2021-12-16 | 2022-03-25 | 上海瑞柯恩激光技术有限公司 | Solid laser and solid laser system |
| CN115201967A (en) * | 2022-06-08 | 2022-10-18 | 中国电子科技集团公司第十一研究所 | Reverse optical fiber coupler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289987A (en) * | 2018-12-06 | 2020-06-16 | 深圳市速腾聚创科技有限公司 | Laser radar apparatus and laser radar ranging system |
| CN110867721A (en) * | 2019-12-02 | 2020-03-06 | 中国科学院合肥物质科学研究院 | Laser device |
| CN114243442A (en) * | 2021-12-16 | 2022-03-25 | 上海瑞柯恩激光技术有限公司 | Solid laser and solid laser system |
| CN115201967A (en) * | 2022-06-08 | 2022-10-18 | 中国电子科技集团公司第十一研究所 | Reverse optical fiber coupler |
| CN115201967B (en) * | 2022-06-08 | 2023-06-23 | 中国电子科技集团公司第十一研究所 | Reverse optical fiber coupler |
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