CN112260047A - Optical fiber laser case with layered structure and installation method thereof - Google Patents
Optical fiber laser case with layered structure and installation method thereof Download PDFInfo
- Publication number
- CN112260047A CN112260047A CN202010997446.1A CN202010997446A CN112260047A CN 112260047 A CN112260047 A CN 112260047A CN 202010997446 A CN202010997446 A CN 202010997446A CN 112260047 A CN112260047 A CN 112260047A
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- bottom box
- partition plate
- fixing
- optical
- fiber laser
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06704—Housings; Packages
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state lasers
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Lasers (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a fiber laser case with a layered structure and an installation method thereof, wherein the case comprises a bottom box, a partition plate assembly and a cover; the partition plate assembly and the bottom box are respectively used for placing a light path part and a circuit part of a laser, the bottom box is provided with a PC area, and a threaded hole is drilled in the PC area and used for fixing the PC; the bottom box is provided with a boss, and a threaded hole is drilled in the boss and used for supporting and fixing the partition plate; a plurality of holes are formed in the side surface of the bottom box; the partition plate assembly comprises a partition plate, a first clamping plate and a second clamping plate, and a notch is formed in the partition plate above a PC placing area corresponding to the bottom box; the partition plate is provided with threaded holes corresponding to the positions of the threaded holes of the four bosses of the bottom box and used for fixing the partition plate on the bottom box; the first clamping plate and the second clamping plate are arranged on the partition plate; the top of the cover is provided with a heat dissipation strip; threaded holes corresponding to the threaded holes in the two sides of the bottom box are drilled in the two sides of the cover, and the cover and the bottom box are assembled into a closed cavity from top to bottom.
Description
Technical Field
The invention relates to the field of ultrafast laser of a laser, in particular to a chassis of a fiber laser with a layered structure and an installation method.
Background
The invention of lasers has driven the development of numerous fields such as metrology, microscopy, micromachining, etc. The built all-fiber laser has the advantages of small volume, high optical signal quality (a laser source has high coherence, high brightness, a small divergence angle and the like), wide power output range, high one-way gain and the like, and is popular among scientific researchers.
The fiber laser based on the nonlinear polarization rotation (NPE) mode locking principle is simple in structure, simple and convenient to operate and suitable for being used and researched in a laboratory. However, the fiber laser of the type has very high requirements on the use environment and is very sensitive to slight disturbance of the optical fiber in the cavity, which seriously affects the stability of mode locking in the cavity and cannot realize large-scale application. Especially, for the cavity structure using the optical fiber polarization controller in the laser cavity, the existence of suspended optical fibers cannot be avoided, which is not favorable for stable mode locking. Therefore, the compact packaging of the laser cavity structure is particularly important for realizing the stable operation of the laser cavity. Disclosure of Invention
One of the objectives of the present invention is to provide a fiber laser chassis with a layered structure, and to complete the packaging of an all-fiber nonlinear polarization mode-locked laser. Different from mode-locked lasers based on other principles in the market, lasers based on the nonlinear polarization mode-locked principle are particularly sensitive to the state of optical fibers, and have high requirements on compactness of a case and fixation of the optical fibers.
The second purpose of the present invention is to provide a concept for packaging a nonlinear polarization mode-locked laser.
The invention is realized by at least one of the following technical schemes.
A fiber laser case with a layered structure comprises a bottom box, a partition plate assembly and a cover, wherein the partition plate assembly is arranged in the bottom box; the baffle plate component and the bottom box are respectively used for placing the optical path part and the circuit part of the laser,
the bottom box is provided with an area for placing an optical fiber type Polarization Controller (PC), and the side surface of the bottom box is provided with a plurality of holes;
the partition plate assembly comprises a partition plate, a first clamping plate and a second clamping plate, wherein a notch is formed in the partition plate above a region, corresponding to the bottom box, for placing the PC, and the notch is used for placing optical fibers extending out of two ends of the PC on the partition plate; the first clamping plate and the second clamping plate are arranged on the partition plate and are respectively used for fixing the Optical Integrator (OIM) and the Optical Coupler (OC);
the top of the cover is provided with a heat dissipation structure, and the cover and the bottom box are assembled into a closed cavity up and down.
Furthermore, a boss is arranged in the bottom box, and a threaded hole is formed in the boss.
Further, the partition plate is provided with a threaded hole corresponding to the threaded hole of the boss.
Furthermore, threaded holes corresponding to the threaded holes in the two sides of the bottom box are drilled in the two sides of the cover and used for fixing the cover and the bottom box.
Further, the bottom box is a square box with an open top surface.
Furthermore, all threaded holes in the partition plate are countersunk threaded holes, and after the partition plate is fixed by screws, the upper surfaces of the screws and the partition plate are on the same plane.
Furthermore, the center of the bottom surface of the bottom box is provided with a pumping seed, and the pumping seed is fixed by heat-conducting glue.
Further, the heat dissipation structure is a heat dissipation strip.
Further, the heat dissipation strips are distributed at equal intervals.
The installation method of the fiber laser case with the layered structure comprises the following steps:
1) pump seeds are placed in the middle area of the bottom box and are fixed by heat-conducting glue; a power line connected with the pump seeds is led out of the case through a corresponding hole on the side surface of the bottom box; connecting a serial port control line of the pumping seed, and fixing a pin header interface of the serial port control line through a corresponding hole on the other side surface of the bottom box; placing an optical fiber type Polarization Controller (PC) in a corresponding area in the bottom box, and fixing the optical fiber type polarization controller by using screws;
2) placing the partition plate on the boss of the bottom box, and fixing the partition plate by using screws; putting an Optical Integrator (OIM) in a first clamping plate of the clapboard, and fixing the optical integrator with heat-conducting glue;
3) fixing an Optical Coupler (OC) in a second clamping plate on the partition plate, fixing the OC in the second clamping plate by using heat-conducting glue, and sequentially connecting the pump seeds, the OIM, the OC and optical fibers extending out of two ends of the PC to form a laser cavity; placing one section of optical fiber on a PC, adjusting the rest optical fibers to enable the optical fibers to be stably placed close to the partition plate, and fixing the movable optical fibers by using heat-conducting glue; fixing two flanges in the holes at two opposite sides of the bottom box; the common end of the OIM is connected with the OC input end, the OC outputs two paths of signals, wherein one end occupying low power corresponds to the output of the flange plate on one side and serves as a light source detection signal, and one end occupying high power corresponds to the output of the flange plate hole on the other side and serves as the output of the laser case;
4) the lid is fitted to the base case and fixed to the base case with screws.
The optical path part and the circuit part of the laser are divided into an upper layer and a lower layer, the optical fibers extending out of two ends of the optical fiber type polarization controller are positioned on the same plane by the partition plate and used for bearing the optical fibers, the optical integrated device in the optical fiber laser cavity is fixed through the strip-shaped clamping plate structure on the partition plate, the movable optical fibers are fixed by the heat-conducting glue, the optical fibers which are not suspended in the resonant cavity are guaranteed, and the stability of the light source output of the NPE mode locking cavity is enhanced. In addition, the heat dissipation area of the laser cavity is increased by the design of the equidistant grids on the cover, and the stability of the mode locking pulse is further ensured.
The invention uses a clapboard type layered structure, the light path part and the circuit part of the laser are respectively arranged on the upper plane of the clapboard and in the case bottom, and the optical fiber and the optical device in the cavity are fixed by using the strip-shaped clamping plate and the heat-conducting glue, thereby ensuring that no suspended optical fiber exists in the laser cavity, and avoiding the instability of mode locking caused by the optical fiber shake, therefore, the invention has great reference value in the aspects of the structural design of the case of the ultrafast optical fiber laser and the encapsulation of the laser.
Compared with the prior art, the invention has the following advantages:
1. the partition plate layered structure is adopted, and the inner parts of the bottom boxes above and below the partition plate are respectively used for placing the light path part and the circuit part of the laser, so that the partition plate with a certain height away from the bottom in the case can enable the light path part to be placed on the partition plate flatly, and the problem that optical fibers extending from two ends of the optical fiber type polarization controller are bent is solved;
2. the optical integrated device is stably fixed on the partition plate by adopting the structure that the partition plate is provided with the clamping plate, so that the problem that mode locking is influenced due to slight disturbance of the optical integrated device in other laser cavities is solved;
3. the laser cavity and the pump seeds inside the laser box are packaged by the heat-conducting glue, and the heat-radiating structure is arranged, so that the heat-conducting glue can increase heat radiation and play a role in fixing.
Drawings
Fig. 1 is a perspective view of a fiber laser housing with a layered structure according to the present embodiment;
fig. 2 is a perspective view of a fiber laser case with a layered structure, with a cover removed, according to an embodiment;
fig. 3 is a three-dimensional structural view of a bottom box of a fiber laser case with a layered structure according to the embodiment;
FIG. 4 is a perspective view of the partition board of the present embodiment;
wherein: 1-bottom box, 2-clapboard component, 21-clapboard, 22-first strip-shaped clamping plate, 23-second strip-shaped clamping plate and 3-cover.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.
A fiber laser cabinet of a layered structure as shown in fig. 1 and 2 includes a square bottom case 1, a bulkhead assembly 2 and a cover 3; the clapboard component 2 and the bottom box 1 are respectively used for placing a light path part and a circuit part of the laser, and after the assembly is finished, the laser does not have a suspended optical fiber.
Fan-shaped stretching bosses are arranged at four corners in the bottom box 1, and threaded holes are drilled in the bosses and used for supporting and fixing the partition plate assembly 2; the area formed by the partition board assembly 2 and the bottom box 1 is used for placing an optical fiber type Polarization Controller (PC), optical fibers extending out of two ends of the optical fiber type polarization controller are located on the same plane and used for bearing the optical fibers, and four threaded holes are drilled in the bottom surface of the bottom box 1 and used for fixing the PC.
As shown in fig. 4, the partition assembly 2 includes a partition 21, a first strip clamp plate 22 and a second strip clamp plate 23, where the partition 21 has a notch above a PC placing area corresponding to the bottom box, and is used for placing optical fibers extending from two ends of the PC on a plane of the partition 21 without bending; threaded holes corresponding to the positions of the threaded holes of the four bosses of the bottom box 1 are formed in four corners of the partition plate 21 and used for fixing the partition plate 21 on the bottom box 1; the first strip-shaped clamping plate 22 and the second strip-shaped clamping plate 23 are arranged on the partition plate and are respectively used for fixing an Optical Integrator (OIM) and an Optical Coupler (OC), the second strip-shaped clamping plate 23 far away from the gap is used for placing the OC, and the first strip-shaped clamping plate 21 close to the gap is used for placing the OIM.
As shown in fig. 3, three holes are formed in the side surface of the bottom case 1 away from the gap, and are respectively used for extending the power line of the pump seed out of the hole of the bottom case 1, the hole for fixing the serial port line pin header interface of the pump seed, and the hole for fixing the flange plate of the output light source; a hole for fixing the flange plate is formed in the side face, close to the notch, of the bottom box 1 and is used as a detection signal output end of a light source; and threaded holes are formed in two opposite sides of the bottom box 1 and used for fixing a cover.
The cover 3 is provided with heat dissipation strips at equal intervals; threaded holes corresponding to the threaded holes in the two sides of the bottom box are drilled in the two sides of the cover and used for fixing the cover and the bottom box, and the cover and the bottom box are assembled into a closed cavity up and down.
The installation method of the fiber laser case with the layered structure is as follows.
In this embodiment, the circuit part of the laser is installed first, and then the optical path part is installed in the order from bottom to top.
For the circuit part, pump seeds are put in the middle area of the bottom box and are fixed by heat-conducting glue; a power line connected with the pump seeds is led out of the case through a corresponding hole on the side surface of the bottom box; connecting a serial port control line of the pumping seed, and fixing a pin header interface of the serial port control line through a corresponding hole on the other side surface of the bottom box; placing an optical fiber type Polarization Controller (PC) in a corresponding area in the bottom box, and fixing the optical fiber type polarization controller by using screws;
for the optical path portion, the partition plates 21 are placed on the four bosses of the base case 1 and fixed with screws. Placing the OIM in the first strip-shaped clamping plate 22 and the OC in the second strip-shaped clamping plate 23, fixing the OIM and the OC by using heat-conducting glue, and sequentially connecting the pump seeds, the OIM, the OC and the optical fibers extending out of two ends of the PC to form a laser cavity; the optical fibers are coiled into a shape of circular superposition on the partition plate 21, wherein one section of the optical fibers are placed on a PC, the positions of the other optical fibers are adjusted, so that the optical fibers are stably and tightly attached to the partition plate to reduce the stress in the optical fibers to the maximum extent, and finally, the whole laser cavity is fixed by heat-conducting pouring sealant.
Fixing two flange plates in holes at two opposite sides of the bottom box, wherein the two flange plates are used for outputting light source signals; the common end of the OIM is connected with the OC input end, the OC outputs two paths of signals, wherein one end occupying low power corresponds to the output of the flange plate on one side and serves as a light source detection signal, and one end occupying high power corresponds to the output of the flange plate hole on the other side and serves as the output of the laser case;
and covering the cover 3 and fixing the cover by using screws to finish the packaging of the laser case. And a jumper wire is connected to the other side of the flange plate, and the laser output can be realized by starting a laser power supply.
The above embodiment is one of the embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiment and the test examples, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be regarded as equivalent substitutions and are included in the scope of the present invention.
Claims (10)
1. A fiber laser case with a layered structure is characterized by comprising a bottom box, a partition plate assembly and a cover, wherein the partition plate assembly and the cover are arranged in the bottom box; the baffle plate component and the bottom box are respectively used for placing the optical path part and the circuit part of the laser,
the bottom box is provided with an area for placing an optical fiber type Polarization Controller (PC), and the side surface of the bottom box is provided with a plurality of holes;
the partition plate assembly comprises a partition plate, a first clamping plate and a second clamping plate, wherein a notch is formed in the partition plate above a region, corresponding to the bottom box, for placing the PC, and the notch is used for placing optical fibers extending out of two ends of the PC on the partition plate; the first clamping plate and the second clamping plate are arranged on the partition plate and are respectively used for fixing the Optical Integrator (OIM) and the Optical Coupler (OC);
the top of the cover is provided with a heat dissipation structure, and the cover and the bottom box are assembled into a closed cavity up and down.
2. The fiber laser cabinet with a layered structure as claimed in claim 1, wherein a boss is provided in the bottom case, and a threaded hole is provided in the boss.
3. The fiber laser cabinet with a layered structure as claimed in claim 1, wherein the partition is provided with a threaded hole corresponding to the position of the threaded hole of the boss.
4. The fiber laser cabinet with the layered structure as claimed in claim 1, wherein threaded holes corresponding to the positions of the threaded holes on the two sides of the bottom case are drilled on the two sides of the cover for fixing the cover and the bottom case.
5. The fiber laser cabinet of claim 1, wherein the bottom box is an open-topped box.
6. The fiber laser cabinet with the layered structure as claimed in claim 1, wherein all the threaded holes on the partition are countersunk threaded holes, and after the fiber laser cabinet is fixed by screws, the upper surfaces of the screws and the upper surface of the partition are on the same plane.
7. The fiber laser cabinet with a layered structure as claimed in claim 1, wherein a pump seed is disposed at the center of the bottom surface of the bottom case, and the pump seed is fixed by a thermal conductive adhesive.
8. The fiber laser cabinet of claim 1, wherein the heat dissipation structure is a heat dissipation bar.
9. The fiber laser cabinet of claim 1, wherein the heat dissipation bars are equally spaced.
10. A method of installing a fibre laser cabinet of a layered structure according to any one of claims 1 to 9, comprising the steps of:
1) pump seeds are placed in the middle area of the bottom box and are fixed by heat-conducting glue; a power line connected with the pump seeds is led out of the case through a corresponding hole on the side surface of the bottom box; connecting a serial port control line of the pumping seed, and fixing a pin header interface of the serial port control line through a corresponding hole on the other side surface of the bottom box; placing an optical fiber type Polarization Controller (PC) in a corresponding area in the bottom box, and fixing the optical fiber type polarization controller by using screws;
2) placing the partition plate on the boss of the bottom box, and fixing the partition plate by using screws; putting an Optical Integrator (OIM) in a first clamping plate of the clapboard, and fixing the optical integrator with heat-conducting glue;
3) fixing an Optical Coupler (OC) in a second clamping plate on the partition plate, fixing the OC in the second clamping plate by using heat-conducting glue, and sequentially connecting the pump seeds, the OIM, the OC and optical fibers extending out of two ends of the PC to form a laser cavity; placing one section of optical fiber on a PC, adjusting the rest optical fibers to enable the optical fibers to be stably placed close to the partition plate, and fixing the movable optical fibers by using heat-conducting glue; fixing two flanges in the holes at two opposite sides of the bottom box; the common end of the OIM is connected with the OC input end, the OC outputs two paths of signals, wherein one end occupying low power corresponds to the output of the flange plate on one side and serves as a light source detection signal, and one end occupying high power corresponds to the output of the flange plate hole on the other side and serves as the output of the laser case;
4) the lid is fitted to the base case and fixed to the base case with screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010997446.1A CN112260047A (en) | 2020-09-21 | 2020-09-21 | Optical fiber laser case with layered structure and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010997446.1A CN112260047A (en) | 2020-09-21 | 2020-09-21 | Optical fiber laser case with layered structure and installation method thereof |
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| Publication Number | Publication Date |
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| CN112260047A true CN112260047A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010997446.1A Pending CN112260047A (en) | 2020-09-21 | 2020-09-21 | Optical fiber laser case with layered structure and installation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116632632A (en) * | 2023-03-26 | 2023-08-22 | 齐鲁中科光物理与工程技术研究院 | Double-layer structure sodium beacon laser cavity device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798887A (en) * | 2019-02-26 | 2019-05-24 | 中北大学 | Integrated optical waveguide gyroscope optoelectronic integration constructional device |
| CN110061417A (en) * | 2019-05-24 | 2019-07-26 | 珠海百亚电子科技有限公司 | Laser and luminaire |
| CN111668683A (en) * | 2020-05-31 | 2020-09-15 | 华南理工大学 | A quick-witted case for placing rotatory mode locking fiber laser of nonlinear polarization |
-
2020
- 2020-09-21 CN CN202010997446.1A patent/CN112260047A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798887A (en) * | 2019-02-26 | 2019-05-24 | 中北大学 | Integrated optical waveguide gyroscope optoelectronic integration constructional device |
| CN110061417A (en) * | 2019-05-24 | 2019-07-26 | 珠海百亚电子科技有限公司 | Laser and luminaire |
| CN111668683A (en) * | 2020-05-31 | 2020-09-15 | 华南理工大学 | A quick-witted case for placing rotatory mode locking fiber laser of nonlinear polarization |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116632632A (en) * | 2023-03-26 | 2023-08-22 | 齐鲁中科光物理与工程技术研究院 | Double-layer structure sodium beacon laser cavity device |
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Application publication date: 20210122 |
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