CN204028409U - A kind of high-power semiconductor laser fiber coupling system - Google Patents
A kind of high-power semiconductor laser fiber coupling system Download PDFInfo
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- CN204028409U CN204028409U CN201420365962.2U CN201420365962U CN204028409U CN 204028409 U CN204028409 U CN 204028409U CN 201420365962 U CN201420365962 U CN 201420365962U CN 204028409 U CN204028409 U CN 204028409U
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Abstract
The utility model provides a kind of technical scheme of high-power semiconductor laser fiber coupling system, the method adopts the miniwatt semiconductor laser optical fiber coupled system of identical numerical aperture and core diameter as light source, utilize fiber optic splitter as passing light medium, based on light beam principle of reversibility, by monitoring the light echo power of 0 ° of completely reflecting mirror as the criterion of focusing system best spatial location, can realize the minute adjustment of focusing system and output optical fibre relative tertiary location in high-power semiconductor laser fiber coupling system and fix.This invention has focusing system and regulates the features such as simple, adjusting criterion is accurate reliable.Semiconductor laser high-brightness fiber-optic coupling output light source based on this invention development can be applicable to the various fields such as pumping optical fiber laser instrument, medical treatment and industrial processes.
Description
Technical field
The utility model relates to laser technology application, especially a kind of high-power semiconductor laser fiber coupling system.
Background technology
In the prior art, known technology is: have the advantages such as electro-optical efficiency is high, good reliability, miniaturization due to semiconductor laser, all developed rapidly and widespread use at aspects such as laser pumping source and direct application, particularly, as the pumping source of solid state laser and fiber laser, promote the fast development of all solid state laser.High brightness, high-power diode-end-pumped source are the important foundation conditions that fiber laser and solid state laser are realized high-level efficiency, high-power output.
In order to realize high power, the high-level efficiency coupling output of semiconductor laser optical fiber coupled system, need the relative tertiary location precision of focusing system and output optical fibre to agree with, require axially to agree be not more than ± 5 μ m of trueness error, be not more than ± 3mrad of turning axle trueness error.The domestic and international locus Method of Adjustment for focusing system in semiconductor laser optical fiber coupled system at present, all adopt forward iteration to regulate fixing technological approaches, it is the pattern of light source → focusing system → coupling output optical fibre, it is more that this technological approaches adjusting relates to variable, regulate complicated and waste time and energy, be difficult to reach the accuracy requirement of focusing system and output optical fibre relative tertiary location, this is the existing weak point of prior art.
Utility model content
The purpose of this utility model, be exactly for the existing deficiency of prior art, and provide a kind of technical scheme of high-power semiconductor laser fiber coupling system, this scheme adopts the fixing mode of machinery, to treat that coupled fiber is fixed on module housing, adopt the miniwatt semiconductor laser optical fiber coupled system of identical numerical aperture and core diameter as reference light source, utilize fiber optic splitter as passing light medium, based on light beam principle of reversibility, light echo power by 0 ° of completely reflecting mirror is as the criterion of focusing system best spatial location, can realize the precision of high-power semiconductor laser fiber coupling system focusing system and output optical fibre relative tertiary location debugs fixing.
This programme is achieved by the following technical measures: a kind of high-power semiconductor laser fiber coupling system, includes the output optical fibre of reference light source, fiber optic splitter, fiber optic splitter, semiconductor laser optical fiber coupled system; The output optical fibre of reference light source is connected with the input optical fibre of fiber optic splitter; The output optical fibre of semiconductor laser optical fiber coupled system is connected with the output optical fibre of fiber optic splitter; The inside of semiconductor laser optical fiber coupled system is provided with focusing system and 0 ° of total reflective mirror; Focusing system is made up of polylith single-element lens.
As this programme preferably: numerical aperture and the core diameter of the output optical fibre of the output optical fibre of reference light source and semiconductor laser optical fiber coupled system are in full accord.
As this programme preferably: numerical aperture and the core diameter of each unit optical fiber of fiber optic splitter and semiconductor laser optical fiber coupled system output optical fibre are in full accord.
As this programme preferably: the output optical fibre end face keeping parallelism of the reflecting surface of 0 ° of completely reflecting mirror and semiconductor laser optical fiber coupled system, parallel misalignment is not more than ± 0.2 °.
As this programme preferably: fiber optic splitter is connected with power meter and absorption cell respectively.
The beneficial effect of this programme can be learnt according to the narration to such scheme, owing to adopting the fixing mode of machinery in this scheme, to treat that coupled fiber is fixed on module housing, adopt the miniwatt semiconductor laser optical fiber coupled system of identical numerical aperture and core diameter as reference light source, utilize fiber optic splitter as passing light medium, based on light beam principle of reversibility, light echo power by 0 ° of completely reflecting mirror is as the criterion of focusing system best spatial location, can realize the precision of high-power semiconductor laser fiber coupling system focusing system and output optical fibre relative tertiary location debugs fixing.
As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and the beneficial effect of its enforcement is also apparent.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1 is 0 ° of completely reflecting mirror; 2 is focusing system; 3 is the end face of the output optical fibre of semiconductor laser optical fiber coupled system; 4 is the tie point of the output optical fibre of semiconductor laser optical fiber coupled system and the output optical fibre of fiber optic splitter; 5 is fiber optic splitter; 6 is reference light source; 7 is power meter; 8 is absorption cell.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
Can find out that by accompanying drawing the high-power semiconductor laser fiber coupling system of this programme of this programme includes the output optical fibre of reference light source, fiber optic splitter, fiber optic splitter, semiconductor laser optical fiber coupled system; The output optical fibre of reference light source is connected with the input optical fibre of fiber optic splitter; The output optical fibre of semiconductor laser optical fiber coupled system is connected with the output optical fibre of fiber optic splitter; The inside of semiconductor laser optical fiber coupled system is provided with focusing system and 0 ° of total reflective mirror; Focusing system is made up of polylith single-element lens.
Numerical aperture and the core diameter of the output optical fibre of the output optical fibre of reference light source and semiconductor laser optical fiber coupled system are in full accord.Numerical aperture and the core diameter of each unit optical fiber of fiber optic splitter and semiconductor laser optical fiber coupled system output optical fibre are in full accord.The output optical fibre end face keeping parallelism of the reflecting surface of 0 ° of completely reflecting mirror and semiconductor laser optical fiber coupled system, parallel misalignment is not more than ± and 0.2 °.Fiber optic splitter is connected with power meter and absorption cell respectively.
The tune dress method of high-power semiconductor laser fiber coupling system is:
Adopt optical fiber splicer that the output optical fibre of the output optical fibre of semiconductor laser optical fiber coupled system and reference light source is fused to respectively on the input optical fibre and output optical fibre of fiber optic splitter.
Adopt the fixing mode of machinery that the output optical fibre end face of semiconductor laser optical fiber coupled system is fixed on the housing of semiconductor laser optical fiber coupled system, and place 0 ° of completely reflecting mirror in the suitable position of enclosure interior, adopt He-Ne laser instrument ensure reflecting surface and the fiber end face keeping parallelism of 0 ° of completely reflecting mirror and semiconductor laser optical fiber coupled system output optical fibre common optical axis and catoptron, parallel misalignment be not more than ± 0.2 °.
With the bright dipping of direct supply driving reference light source, regulate the locus of inner first single-element lens of focusing system, in the time that the power reading on power meter reaches maximum, order regulates remaining element lens successively, want the power reading on guaranteed output meter all to reach maximum, complete iteratively adjusting for the first time.Repeat above regulating step at least three times, until while regulating each single-element lens locus, power meter power reading no longer increases, and completes the adjusting of focusing system.
Finally adopt photosensitive glue, each single-element lens in fixed-focus system, often fixes a single-element lens successively, all to check power, if deviation is greater than 0.3%, need to readjust this single-element lens, until power deviation is less than 0.3%, remaining element lens Using such method is fixed.
The utility model is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (5)
1. a high-power semiconductor laser fiber coupling system, is characterized in that: the output optical fibre, focusing system and the 0 ° of total reflective mirror that include reference light source, fiber optic splitter, fiber optic splitter, semiconductor laser optical fiber coupled system; The output optical fibre of described reference light source is connected with the input optical fibre of fiber optic splitter; The output optical fibre of described semiconductor laser optical fiber coupled system is connected with the output optical fibre of fiber optic splitter; Described focusing system is made up of polylith single-element lens.
2. a kind of high-power semiconductor laser fiber coupling system according to claim 1, is characterized in that: numerical aperture and the core diameter of the output optical fibre of the output optical fibre of described reference light source and semiconductor laser optical fiber coupled system are in full accord.
3. a kind of high-power semiconductor laser fiber coupling system according to claim 1, is characterized in that: numerical aperture and the core diameter of each unit optical fiber of described fiber optic splitter and semiconductor laser optical fiber coupled system output optical fibre are in full accord.
4. a kind of high-power semiconductor laser fiber coupling system according to claim 1, is characterized in that: the output optical fibre end face keeping parallelism of the reflecting surface of described 0 ° of completely reflecting mirror and semiconductor laser optical fiber coupled system.
5. a kind of high-power semiconductor laser fiber coupling system according to claim 1, is characterized in that: described fiber optic splitter is connected with power meter and absorption cell respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365962.2U CN204028409U (en) | 2014-07-04 | 2014-07-04 | A kind of high-power semiconductor laser fiber coupling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365962.2U CN204028409U (en) | 2014-07-04 | 2014-07-04 | A kind of high-power semiconductor laser fiber coupling system |
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| Publication Number | Publication Date |
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| CN204028409U true CN204028409U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420365962.2U Expired - Fee Related CN204028409U (en) | 2014-07-04 | 2014-07-04 | A kind of high-power semiconductor laser fiber coupling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049324A (en) * | 2014-07-04 | 2014-09-17 | 中国工程物理研究院应用电子学研究所 | High-power semiconductor laser optical fiber coupling system and adjustment method thereof |
| CN111929777A (en) * | 2020-07-23 | 2020-11-13 | 江苏天元激光科技有限公司 | Assembling method of semiconductor laser focusing lens |
-
2014
- 2014-07-04 CN CN201420365962.2U patent/CN204028409U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049324A (en) * | 2014-07-04 | 2014-09-17 | 中国工程物理研究院应用电子学研究所 | High-power semiconductor laser optical fiber coupling system and adjustment method thereof |
| CN104049324B (en) * | 2014-07-04 | 2016-01-20 | 中国工程物理研究院应用电子学研究所 | A kind of high-power semiconductor laser fiber coupling system and Method of Adjustment thereof |
| CN111929777A (en) * | 2020-07-23 | 2020-11-13 | 江苏天元激光科技有限公司 | Assembling method of semiconductor laser focusing lens |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20141217 Termination date: 20160704 |