CN1098550C - Circular cavity optic fibre laser - Google Patents
Circular cavity optic fibre laser Download PDFInfo
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- CN1098550C CN1098550C CN 99115816 CN99115816A CN1098550C CN 1098550 C CN1098550 C CN 1098550C CN 99115816 CN99115816 CN 99115816 CN 99115816 A CN99115816 A CN 99115816A CN 1098550 C CN1098550 C CN 1098550C
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- optical fiber
- dispersion
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Abstract
The present invention relates to an annular cavity optical fiber laser. Gain optical fiber in the cavity of the annular cavity optical fiber laser and optical fiber of a wavelength division multiplexer adopt optical fiber with a negative dispersion value, other elements in the cavity adopt dispersion compensation optical fiber with a positive dispersion value, and the total dispersion measure in the cavity is zero or approaches zero from a positive value; thereby, the laser designed by the present invention works in a non-arcing subarea after the mode locking, the output energy is greatly enhanced, and the laser has the advantages of simple structure, easy manufacture and low cost.
Description
The invention belongs to the improvement of circular cavity optic fibre laser structure, relate to the laser fabrication technical field.
Usually circular cavity optic fibre laser is operated in dispersion region, and promptly the cavity total dispersion measure is a negative value, and its output energy is less.People are by studies confirm that, when the laser annular cavity total colo(u)r specification of loosing is zero or by when going to zero, the single pulse energy of its output can be greatly improved.Though the manufacturing technology of positive dispersion fiber and negative dispersion optical fiber is known at present, view up to now is only to adopt the gain fibre of positive dispersion could realize implementing in laser chamber.The American develops this laser recently, and it is the gain fibre that adopts positive dispersion in the chamber, and other components and parts then use common monomode fiber with negative dispersion in the chamber, and its effect is fine really.The material of the countenance gain fibre that it adopts and making are unexposed, and also the no one can produce, and its selling price costliness, makes that the cost of laser is very high.And do not see the report that other implementation methods are arranged yet.
Purpose of the present invention be exactly a kind of cavity total dispersion measure of design be zero or by on the occasion of the circular cavity optic fibre laser that goes to zero, the output energy is increased substantially, and have simple in structure, make advantage easy, with low cost.
The structure of the circular cavity optic fibre laser that the present invention is designed is, pumping laser enters wavelength division multiplexer by fiber coupler, by wavelength division multiplexer pump light is coupled into annular chamber again, the order of connection of each components and parts is in the annular chamber: wavelength division multiplexer, gain fibre, output coupler, optical fiber polarization controller 1, polarization-sensitivity fibre optic isolater, optical fiber polarization controller 2, wavelength division multiplexer are to connect and compose annular chamber with optical fiber; It is characterized in that the gain fibre in the chamber and the optical fiber of wavelength division multiplexer adopt the optical fiber of negative dispersion value, and other components and parts all adopt the dispersion compensating fiber with positive dispersion value in the chamber in, and to make the cavity total dispersion measure be zero or by on the occasion of going to zero.Characteristics of the present invention are that also described negative dispersion gain fibre adopts mixes Er
3+Optical fiber, the optical fiber of described wavelength division multiplexer adopts silica fiber, and described dispersion compensating fiber with positive dispersion value adopts the dispersion shift silica fiber, makes it have the positive dispersion amount.
Because the designed circular cavity optic fibre laser of the present invention, the optical fiber of its interacvity gain optical fiber and wavelength division multiplexer adopts the optical fiber of negative dispersion value, other components and parts all adopt dispersion compensating fiber in the chamber, making the cavity total dispersion measure is zero or by on the occasion of going to zero, be non-negative, it is operated in non-arc subarea behind the laser locked mode like this, the output energy is increased considerably reduced cost of manufacture again simultaneously, and have simple in structure, the easy advantage of making.
Accompanying drawing 1 is a pump laser, and 2 is fiber coupler, and 3 is optical fiber splitter, and 4 is wavelength division multiplexer, and 5 is gain fibre, and 6 is optic fiber ring-shaped cavity, and 7 is optical fiber polarization controller, and 8 is the polarization-sensitivity fibre optic isolater, and 9 is the optical fiber output coupler.
Illustrate the enforcement of technical solution of the present invention below in conjunction with accompanying drawing.
Referring to accompanying drawing, pumping laser (980nm) is coupled into optical fiber by fiber coupler, and imports the 980nm/1550nm wavelength division multiplexer by optical fiber, is provided with optical fiber splitter therebetween and is used to monitor pumping laser; The optical fiber of wavelength division multiplexer adopts the silica fiber of negative dispersion value, and it is coupled into optic fiber ring-shaped cavity with pumping laser; Annular chamber is with optical fiber each components and parts to be connected and composed, and its structural order is wavelength division multiplexer, gain fibre, output coupler, optical fiber polarization controller 1, polarization-sensitivity fibre optic isolater, optical fiber polarization controller 2, returns the wavelength-division recombiner; Wherein gain fibre adopts the Er that mixes of negative dispersion value
3+Optical fiber, other components and parts all adopt the dispersion shift silica fiber with positive dispersion value in the chamber, the optical fiber length overall that has the positive dispersion value in the chamber should be carried out designing and calculating according to the negative dispersion amount of its material character (positive dispersion value) and cavity total, and making the cavity total dispersion measure is zero or by on the occasion of going to zero; This designing and calculating can both be finished for this technical field technical staff; The described Er that mixes
3+The manufacture method of optical fiber, silica fiber and dispersion shift silica fiber is existing known technology, repeats no more here.By the above-mentioned circular cavity optic fibre laser of producing, its output energy maximum can reach the damage threshold of optical fiber.
Claims (2)
1. circular cavity optic fibre laser, its pumping laser is coupled into optic fiber ring-shaped cavity by wavelength division multiplexer, annular chamber is with optical fiber each components and parts to be connected and composed, and the order of connection of each components and parts is in the chamber: wavelength division multiplexer, gain fibre, output coupler, optical fiber polarization controller 1, polarization-sensitivity fibre optic isolater, optical fiber polarization controller 2, wavelength division multiplexer; It is characterized in that the gain fibre in the chamber and the optical fiber of wavelength division multiplexer adopt the optical fiber of negative dispersion value, and other components and parts all adopt the dispersion compensating fiber with positive dispersion value in the chamber in, and to make the cavity total dispersion measure be zero or by on the occasion of going to zero.
2. fiber laser according to claim 1 is characterized in that, described negative dispersion gain fibre adopts mixes Er
3+Optical fiber, the optical fiber of described wavelength division multiplexer adopts silica fiber, and described dispersion compensating fiber with positive dispersion value adopts the dispersion shift silica fiber, makes it have the positive dispersion amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115816 CN1098550C (en) | 1999-07-12 | 1999-07-12 | Circular cavity optic fibre laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115816 CN1098550C (en) | 1999-07-12 | 1999-07-12 | Circular cavity optic fibre laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1280408A CN1280408A (en) | 2001-01-17 |
| CN1098550C true CN1098550C (en) | 2003-01-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99115816 Expired - Fee Related CN1098550C (en) | 1999-07-12 | 1999-07-12 | Circular cavity optic fibre laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1098550C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779780B (en) * | 2013-12-30 | 2016-08-17 | 中国科学院西安光学精密机械研究所 | Multistage ultra-short pulse laser substep compressibility |
| WO2016138871A1 (en) | 2015-03-05 | 2016-09-09 | Harbin Institute Of Technology | Method and equipment for dimensional measurement of a micro part based on fiber laser with multi-core fbg probe |
| CN104677286B (en) * | 2015-03-05 | 2018-03-20 | 哈尔滨工业大学 | Four-core fiber grating probe micro-scale measurement device and method based on optical fiber ring laser |
| CN104716555A (en) * | 2015-04-10 | 2015-06-17 | 湖南大学 | Passive mode-locking thulium-doped optical fiber laser device based on topology insulator |
| CN105323007B (en) * | 2015-11-06 | 2017-11-21 | 东北林业大学 | Dispersion compensation device based on fiber annular resonant cavity |
| US10855048B2 (en) | 2016-06-01 | 2020-12-01 | The University Of Hong Kong | Airy-beam optical swept source |
-
1999
- 1999-07-12 CN CN 99115816 patent/CN1098550C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1280408A (en) | 2001-01-17 |
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