CN204103238U - A kind of device of the fiber laser Laser output that realizes beginning to speak - Google Patents
A kind of device of the fiber laser Laser output that realizes beginning to speak Download PDFInfo
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- CN204103238U CN204103238U CN201420652141.7U CN201420652141U CN204103238U CN 204103238 U CN204103238 U CN 204103238U CN 201420652141 U CN201420652141 U CN 201420652141U CN 204103238 U CN204103238 U CN 204103238U
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- fiber
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- laser
- distributed reflection
- optical fiber
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- 239000000835 fiber Substances 0.000 title claims abstract description 72
- 239000013307 optical fiber Substances 0.000 claims abstract description 44
- 239000004065 semiconductor Substances 0.000 claims abstract description 10
- 241000209094 Oryza Species 0.000 description 8
- 235000007164 Oryza sativa Nutrition 0.000 description 8
- 235000009566 rice Nutrition 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model discloses a kind of device of the fiber laser Laser output that realizes beginning to speak.The utility model comprises the first distributed reflection optical fiber, wavelength division multiplexer, semiconductor laser, Er-doped fiber and the second distributed reflection optical fiber; A port termination of the first distributed reflection optical fiber, makes it not produce reflection; The signal port Fiber connection of another port and wavelength division multiplexer; The output port of semiconductor laser and the pump ports Fiber connection of wavelength division multiplexer; The public port of wavelength division multiplexer is connected with Er-doped fiber fiber port; The another one port of Er-doped fiber is connected with a fiber port of the second distributed reflection optical fiber; The another one port of the second distributed reflection optical fiber is as fiber laser Laser output port of beginning to speak.The utility model, owing to have employed distributed reflection optical fiber, has the advantages such as cheap, compact conformation.
Description
Technical field
The utility model belongs to laser technology field, particularly a kind of device of the fiber laser Laser output of beginning to speak based on distributed reflection optical fiber.
Background technology
Fiber laser is the most advanced laser of laser technology field, there is the advantages such as compact conformation, optical fiber compatibility, Low threshold, high efficiency, high light beam quality and laser frequency spectrum controllability are strong, be widely used in the fields such as industrial processes, biomedicine, illumination, national defense industry at present.Fiber laser has diversified structure, wherein commonly enters oneself for the examination ring cavity structure, linear cavity structure.Most widely used is at present the fiber laser of linear cavity structure, and general speculum or the fiber grating of adopting, as reflection device, forms closed resonator structure.In recent years, a kind of fiber laser of beginning to speak of novelty obtains the concern of people, and this laser has unique Output of laser wavelength characteristic.
The begin to speak main method of fiber laser Laser output of current realization comprises: 1, based on Raman pump gain, be about the general single mode fiber of 100 kms as distributed Feedback device and gain device using length.Its major defect is the optical fiber needing to grow very much, and laser volume is large, and lasing efficiency is low.2, adopt doped fiber as gain media, be about the general single mode fiber of 50 kms using fiber grating as a reflection device and length as another one reflection device, belong to half-open cavity optical fibre laser structure.Its major defect is the optical fiber needing to grow very much, and laser volume is large.
Summary of the invention
The utility model is exactly for the deficiencies in the prior art, proposes a kind of device of the fiber laser Laser output of beginning to speak based on distributed reflection optical fiber.
The utility model comprises the first distributed reflection optical fiber, 980/1550nm wavelength division multiplexer, 980nm semiconductor laser, Er-doped fiber and the second distributed reflection optical fiber; A port termination of the first distributed reflection optical fiber, makes it not produce reflection; The signal port Fiber connection of another port and 980/1550nm wavelength division multiplexer; The output port of 980nm semiconductor laser and the pump ports Fiber connection of 980/1550nm wavelength division multiplexer; The public port of 980/1550nm wavelength division multiplexer is connected with Er-doped fiber fiber port; The another one port of Er-doped fiber is connected with a fiber port of the second distributed reflection optical fiber; The another one port of the second distributed reflection optical fiber is as fiber laser Laser output port of beginning to speak.
Furtherly, the first described distributed reflection fiber lengths is 10 ~ 1000 meters.
Furtherly, the second described distributed reflection fiber lengths is 10 ~ 100 meters.
The utility model is mainly applicable to begin to speak the acquisition of fiber laser laser, make use of distributed reflection optical fiber that length is L1 and the distributed reflection that the distributed reflection optical fiber that length is L2 has, gain is obtained by 980nm diode-end-pumped Er-doped fiber, define the fiber laser of beginning to speak of a compact conformation, obtain fiber laser Laser output of beginning to speak.Owing to have employed distributed reflection optical fiber, the utility model has the advantages such as cheap, compact conformation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the fiber laser laser output spectrum figure that begins to speak in the utility model embodiment.
Embodiment
As shown in Figure 1, realizing beginning to speak the device of fiber laser Laser output, to comprise a segment length be L1(500 rice) distributed reflection optical fiber 1,980/1550nm wavelength division multiplexer 2,980nm semiconductor laser 3, one section of Er-doped fiber 4 and a segment length be L2(100 rice) distributed reflection optical fiber 5.
The begin to speak method of fiber laser Laser output of specific implementation comprises the following steps:
(1) select a segment length to be L1(500 rice) distributed reflection optical fiber, 980/1550nm wavelength division multiplexer, 980nm semiconductor laser, one section of Er-doped fiber and a segment length be L2(100 rice) distributed reflection optical fiber; The random site of described length to be two sections of distributed reflection optical fiber of L1 and L2 the be femtosecond laser being 800nm by wavelength focuses on general single mode fiber length direction is made, length is L1(500 rice) the total reflectivity of distributed reflection optical fiber be about 80%, length is L2(100 rice) the total reflectivity of distributed reflection optical fiber be about 15%.
(2) by length be the port termination of distributed reflection optical fiber of L1, make it not produce reflection; Be another port of distributed reflection optical fiber and the signal port Fiber connection of 980/1550nm wavelength division multiplexer of L1 by length; The output port of 980nm semiconductor laser and the pump ports Fiber connection of 980/1550nm wavelength division multiplexer; The public port of 980/1550nm wavelength division multiplexer is connected with Er-doped fiber fiber port; Another one port and the length of Er-doped fiber are L2(100 rice) a fiber port of distributed reflection optical fiber be connected; Length is L2(100 rice) the another one port of distributed reflection optical fiber as fiber laser Laser output port of beginning to speak.
Step (3) opens 980nm semiconductor laser; Er-doped fiber produces the autofluorescence near 1550nm after receiving 980nm pumping laser, due to the distributed reflection that the length distributed reflection optical fiber that is L1 and the length distributed reflection optical fiber that is L2 has, autofluorescence repeatedly comes and goes Er-doped fiber and is exaggerated until form resonant laser light; The port termination being the distributed reflection optical fiber of L1 due to length does not have Laser output, so the port that all laser is the distributed reflection optical fiber of L2 from length exports; The distributed reflection optical fiber that length is the distributed reflection optical fiber of L1, Er-doped fiber and length are L2 constitutes a fiber laser of beginning to speak, and exports as fiber laser laser of beginning to speak.Fig. 2 gives the fiber laser laser output spectrum figure that begins to speak.
The utility model mainly make use of the femtosecond laser process technology that development in recent years is got up, beginning to speak in fiber laser, to introduce the distributed reflection optical fiber based on femtosecond laser process technology, obtain gain by 980nm diode-end-pumped Er-doped fiber, obtain fiber laser Laser output of beginning to speak.The utility model have employed the shorter distributed reflection optical fiber of length, has the advantages such as cheap, compact conformation.
Claims (3)
1. realization is begun to speak a device for fiber laser Laser output, it is characterized in that: comprise the first distributed reflection optical fiber, 980/1550nm wavelength division multiplexer, 980nm semiconductor laser, Er-doped fiber and the second distributed reflection optical fiber;
A port termination of the first distributed reflection optical fiber, makes it not produce reflection; The signal port Fiber connection of another port and 980/1550nm wavelength division multiplexer; The output port of 980nm semiconductor laser and the pump ports Fiber connection of 980/1550nm wavelength division multiplexer; The public port of 980/1550nm wavelength division multiplexer is connected with Er-doped fiber fiber port; The another one port of Er-doped fiber is connected with a fiber port of the second distributed reflection optical fiber; The another one port of the second distributed reflection optical fiber is as fiber laser Laser output port of beginning to speak.
2. the device of a kind of fiber laser Laser output that realizes beginning to speak according to claim 1, is characterized in that: the first described distributed reflection fiber lengths is 10 ~ 1000 meters.
3. the device of a kind of fiber laser Laser output that realizes beginning to speak according to claim 1, is characterized in that: the second described distributed reflection fiber lengths is 10 ~ 100 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420652141.7U CN204103238U (en) | 2014-11-03 | 2014-11-03 | A kind of device of the fiber laser Laser output that realizes beginning to speak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420652141.7U CN204103238U (en) | 2014-11-03 | 2014-11-03 | A kind of device of the fiber laser Laser output that realizes beginning to speak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204103238U true CN204103238U (en) | 2015-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420652141.7U Expired - Fee Related CN204103238U (en) | 2014-11-03 | 2014-11-03 | A kind of device of the fiber laser Laser output that realizes beginning to speak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204103238U (en) |
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2014
- 2014-11-03 CN CN201420652141.7U patent/CN204103238U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20161103 |