CN213425410U - Laser with quick response - Google Patents
Laser with quick response Download PDFInfo
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- CN213425410U CN213425410U CN202022454749.7U CN202022454749U CN213425410U CN 213425410 U CN213425410 U CN 213425410U CN 202022454749 U CN202022454749 U CN 202022454749U CN 213425410 U CN213425410 U CN 213425410U
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Abstract
The utility model provides a quick response's laser instrument belongs to laser instrument technical field, including power and laser instrument, be equipped with the driver in the power, driver and laser instrument electricity are connected, and the power has the double-circuit output, and the output is used for outputting pre-add electric current all the way, and another way output is used for exporting the pumping pulse current, and the drive input of laser instrument is connected respectively to the double-circuit output of power, and the signal that the laser instrument sent is received to the driver to drive power supply exports to the laser instrument double-circuit. The two output ends of the power supply are respectively connected with the driving input end of the laser, one output end outputs pre-applied current, the other output end outputs pumping pulse current, the two outputs increase the pre-starting current of the laser, the pre-starting current of the laser is used for pumping the reversed particle number of the laser to a threshold value within preset time, the laser establishing time is shortened, and the response time difference between different power sections is reduced while the response time of the laser is prolonged.
Description
Technical Field
The utility model relates to a laser instrument technical field particularly, relates to a quick response's laser instrument.
Background
In the existing laser design scheme, taking a fiber laser as an example, the total response time of the starting is generally about 50 us-100 us. In the fields of ultra-fast laser material processing and advanced manufacturing, welding, laser cutting, 3D printing and the like, the requirement of the total response time of a laser is generally within 10 us. And the response time of different power sections is required to be consistent as much as possible. However, the fast laser response of the full power section is often difficult to achieve with current lasers.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a quick response's laser instrument can realize the quick laser response of full power section.
The embodiment of the utility model is realized like this:
an aspect of the embodiment of the utility model provides a quick response's laser instrument, it includes power and laser instrument, be equipped with the driver in the power, the driver with the laser instrument electricity is connected, the power has double-circuit output, and the output is used for outputting pre-applied current all the way, and another way output is used for exporting the pumping pulse current, the double-circuit output of power is connected respectively the drive input of laser instrument, the driver is received the signal that the laser instrument sent, with the drive the power to laser instrument double-circuit output.
Optionally, the pre-current comprises a pre-pump pulse current and a bias current.
Optionally, the bias current output by the output end of the power supply is between 0.4A and 2A.
Optionally, the bias current is between 0.4A and 1A.
Optionally, one path of the power supply outputs a pre-pumping pulse current, where the pre-pumping pulse current is a rated current of a pump source of the laser.
Optionally, the pre-pump pulse current is between 10A and 20A.
Optionally, the pulse width of the pre-pumping pulse current is between 1us and 20 us.
Optionally, the power supply is a digital circuit power supply.
Optionally, the laser is a semiconductor laser, a fiber laser, or a solid state laser.
The utility model discloses beneficial effect includes:
the embodiment of the utility model provides a quick response's laser instrument, including power and laser instrument, be equipped with the driver in the power, driver and laser instrument electricity are connected, and the power has the double-circuit output, and the output is used for exporting pre-add electric current all the way, and another way output is used for exporting the pumping pulse current, and the drive input of laser instrument is connected respectively to the double-circuit output of power, and the signal that the laser instrument sent is received to the driver to drive power supply exports to the laser instrument double-circuit. The power supply is provided with a double-path output end, and double-path output can be realized. The double-circuit output end of the power supply is respectively connected with the driving input end of the laser, the driver is arranged in the power supply, the driver is electrically connected with the laser, the laser sends signals to the driver, after the driver receives the signals, the two output ends of the driving power supply are simultaneously output, one output end outputs pre-added current, the other output end outputs pumping pulse current, the laser synchronously receives two current signals, the laser receives superposition of the two signals, the pre-starting current of the laser is increased, the pre-starting current of the laser is used for pumping the reversed particle number of the laser to a threshold value within the preset time, therefore, the laser establishing time is shortened, the laser response time is prolonged, and the response time difference between different power sections is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a fast response laser according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating simulation results of different response times of a fast-response laser according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a fast response laser according to an embodiment of the present invention;
fig. 4 is a second schematic diagram illustrating simulation results of different response times of a fast response laser according to an embodiment of the present invention.
Icon: 11-a power supply; 12-a laser; OA-pump pulse current; OA1 — operating state pump current; OA 2-bias current; OA 3-Pre-pumped pulse Current.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present embodiment provides a fast response laser, which includes a power supply 11 and a laser 12, wherein a driver is disposed in the power supply 11, the driver is electrically connected to the laser 12, the power supply 11 has two output terminals, one output terminal is used for outputting a pre-supply current, the pre-supply current includes a pre-pumping pulse current OA3 and a bias current OA2, the other output terminal is used for outputting a pumping pulse current OA, the two output terminals of the power supply 11 are respectively connected to driving input terminals of the laser 12, and the driver receives a signal transmitted by the laser 12 to drive the power supply 11 to perform two-way output to the laser 12.
The laser 12 comprises a fiber laser, a solid laser and a semiconductor laser, and the two-way output end of the power supply 11 is respectively connected with the driving input end of the laser 12.
The power supply 11 has a two-way output end, and can realize two-way output. Specifically, the power supply 11 may be a digital circuit power supply 11. The driver (not shown in the figure) is arranged in the power supply 11, the two-way output of the power supply 11 is realized through the driver, the driver is electrically connected with the laser 12 to receive the signal sent by the laser 12, and drives one output end of the power supply 11 to output pre-pumping pulse current OA3 or bias current OA2 according to the signal, the other output end outputs pumping pulse current OA, and the two output ends output simultaneously, so that the laser 12 receives two current signals synchronously, which is equivalent to the superposition of the two current signals received by the laser 12.
One requirement for the laser 12 to lase is to produce a sufficient population inversion distribution, i.e., the population in the high-energy state is sufficiently greater than the population in the low-energy state; a certain threshold condition is satisfied such that the photon gain is equal to or greater than the photon loss. Therefore, the pre-starting current of the laser 12 is used for pumping the inversion particle number of the laser 12 to the threshold value within the preset time, which is understood that the pre-starting current increases the speed of pumping the inversion particle number to the threshold value in a carrier injection manner, and the laser 12 is accelerated to start emitting laser.
The implementation manner of pumping the reversed population to the threshold is to add one output bias current OA2 or pre-pump pulse current OA3 on the basis that the conventional power supply 11 outputs one pump pulse, output the pre-pump pulse current OA3 or bias current OA2 through one output of the power supply 11, and output the pump pulse current OA through the other output at the same time, so that the reversed population is pumped to the vicinity of the light emitting threshold before the laser 12 emits light, the laser establishing time can be shortened, the response time of the laser is prolonged, and the response time difference between different power sections is reduced.
The embodiment of the utility model provides a quick response's laser instrument, power 11 have the double-circuit output, can realize the double-circuit output. The double-path output end of the power supply 11 is respectively connected with the driving input end of the laser 12, a driver is arranged in the power supply 11, the driver is electrically connected with the laser 12, the laser 12 sends signals to the driver, after the driver receives the signals, the two paths of output ends of the driving power supply 11 are simultaneously output, the pre-current is output by one path of output end, the pumping pulse is output by the other path of output end, the laser 12 synchronously receives two paths of current signals, the laser 12 receives the superposition of the two paths of current signals, the pre-starting current of the laser 12 is increased, the pre-starting current of the laser 12 is used for pumping the reversed particle number of the laser 12 to a threshold value within the preset time, in this way, the laser establishing time is shortened, the response time difference between different power sections is reduced while the response time of.
The following is discussed in two embodiments:
example one
As shown in fig. 1, the bias current OA2 is increased based on the pumping pulse current OA output from the conventional power supply 11. The bias current OA2 output by the output terminal of the power supply 11 is between 0.4A and 2A.
As shown in fig. 2, the pumping driving current starts from the original pumping pulse current OA to the working state pumping current OA1, and starts from the bias current OA2, and the laser 12 starts to be powered on, i.e., works at the bias current OA 2. Therefore, the number of inversion particles in the laser resonant cavity is kept near the threshold value and is in a 'Ready' state, and once the drive output current rises, laser pulses can be rapidly output. The bias current OA2 is typically set at a point above the pump threshold current, typically 0.4A to 1A; the bias current OA2 for a particular pump source may be 0.4A to 2A. The simulation results of the response times of the different power segments are shown in fig. 2.
Example two
As shown in fig. 3, the pre-pump pulse current OA3 is added based on the pump pulse current OA output by the conventional power supply 11. One path of the power supply 11 outputs a pre-pumping pulse current OA3, and the pre-pumping pulse current OA3 is the rated current of the pump source of the laser 12.
As shown in fig. 4, a pre-pump pulse current OA3 is added before the actual current pulse to allow the high-power pump light to quickly establish the resonant cavity inversion population, and then the current value is reduced to the required power; the pre-pumping pulse current OA3 is generally the rated current of the pump source, such as 10A-14A, and the pre-pumping pulse current OA3 of the special pump source can also reach 14A-20A; the pre-pump pulse width is typically taken to be 1us to 20 us.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a quick response's laser instrument, its characterized in that, includes power and laser instrument, be equipped with the driver in the power, the driver with the laser instrument electricity is connected, the power has double-circuit output, and output is used for exporting pre-applied current all the way, and another way output is used for exporting the pumping pulse current, the double-circuit output of power is connected respectively the drive input of laser instrument, the driver is received the signal that the laser instrument sent, in order to drive the power to laser instrument double-circuit output.
2. The fast response laser of claim 1, wherein the pre-current comprises a pre-pump pulse current and a bias current.
3. The fast response laser of claim 2, wherein the output of the power supply outputs a bias current between 0.4A and 2A.
4. A fast response laser according to claim 2 or 3, characterised in that the bias current is between 0.4 and 1A.
5. The fast response laser as claimed in claim 2, wherein one output of the power supply is a pre-pump pulse current, and the pre-pump pulse current is a rated current of a pump source of the laser.
6. A fast response laser according to claim 2 or 5, characterized in that said pre-pump pulse current is between 10 and 20A.
7. The fast response laser of claim 2, wherein the pulse width of the pre-pump pulse current is between 1us and 20 us.
8. The fast response laser of claim 1, wherein the power supply is a digital circuit power supply.
9. The fast response laser of claim 1, wherein the laser is a semiconductor laser, a fiber laser, or a solid state laser.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022454749.7U CN213425410U (en) | 2020-10-29 | 2020-10-29 | Laser with quick response |
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| CN202022454749.7U CN213425410U (en) | 2020-10-29 | 2020-10-29 | Laser with quick response |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023131791A1 (en) * | 2022-01-10 | 2023-07-13 | Renishaw Plc | Energy beam exposures in powder bed fusion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023131791A1 (en) * | 2022-01-10 | 2023-07-13 | Renishaw Plc | Energy beam exposures in powder bed fusion |
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