CN100384035C - Pulse width adjustable acousto-optic Q-switched double-cladding optical fiber laser - Google Patents
Pulse width adjustable acousto-optic Q-switched double-cladding optical fiber laser Download PDFInfo
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- CN100384035C CN100384035C CNB200610027500XA CN200610027500A CN100384035C CN 100384035 C CN100384035 C CN 100384035C CN B200610027500X A CNB200610027500X A CN B200610027500XA CN 200610027500 A CN200610027500 A CN 200610027500A CN 100384035 C CN100384035 C CN 100384035C
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 13
- 238000005253 cladding Methods 0.000 title abstract description 4
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 239000000835 fiber Substances 0.000 claims description 17
- 241000931526 Acer campestre Species 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The acousto-optic Q-switched double-cladding optical fiber laser with adjustable pulse width comprises a resonant cavity mirror, a double-cladding optical fiber, a beam adjusting coupler, an acousto-optic modulator and an output coupling mirror which are sequentially arranged on the same optical axis, wherein the beam adjusting coupler consists of an iris diaphragm and a lens, and the width of laser pulse output by the coupling output mirror is adjusted by the iris diaphragm. The invention realizes the adjustability of the output pulse width. The selectivity of the switching time of the acousto-optic modulator according to the output pulse width is greatly reduced to a certain extent. The invention has the characteristics of simple structure, small volume, large adjustable range of pulse width, strong practicability and the like.
Description
Technical field
The present invention relates to acoustooptic switch and acoustic-optic Q-switched double cladded fiber laser, the adjustable acoustic-optic Q-switched double cladded fiber laser of particularly a kind of pulsewidth.
Background technology
The doubly clad optical fiber of doped with rare-earth elements has brought revolutionary variation for the lightwave technology field.The favor that the double-clad optical fiber laser of acousto-optic Q modulation is can be more compact, output laser pulse easily and effectively is subjected to people day by day.Its application need in industrial circle and various aspects is effectively controlled the output laser pulse width.
Summary of the invention
The object of the present invention is to provide the adjustable acoustic-optic Q-switched double cladded fiber laser of a kind of pulsewidth, characteristics such as that this laser has is simple in structure, volume is little, the pulse duration adjustable extent is big and practical.
Technical solution of the present invention is as follows:
The acoustic-optic Q-switched double cladded fiber laser that a kind of pulsewidth is adjustable, be characterised in that its structure comprises resonant cavity completely reflecting mirror, doubly clad optical fiber, light beam regulation coupler, acousto-optic modulator, the output coupling mirror that sets gradually with optical axis, described light beam regulation coupler is made up of iris diaphgram and collimating lens, by the laser pulse width of described output coupling mirror output, regulate by iris diaphgram.
Described collimating lens is einzel lens or set of lenses.
Described resonant cavity completely reflecting mirror is plated film chamber mirror or the Fiber Bragg Grating FBG that optical maser wavelength is had high reflectance.
The logical light face of described collimating lens and acousto-optic modulator all has the anti-reflection film to optical maser wavelength.
Iris diaphgram in the described light beam regulation coupler is adjustable continuously in the light beam scope, and adjustable precision is 0.1mm.
The front/rear end of described doubly clad optical fiber has an inclination angle.
The relation of each several part is that acousto-optic modulator is when opening, laser in the resonant cavity is set out through doubly clad optical fiber by resonator mirror, pass through the light beam regulation coupling device of forming by iris diaphgram and lens then, laser is collimated in the acousto-optic modulator afterwards, arrive output coupling mirror at last, laser is through coming and going resonance gain, by output coupling mirror output pulse in the chamber.The laser pulse width of output carries out regulating and controlling by the adjusting of iris diaphgram.
Description of drawings
Fig. 1 is the structural representation of the adjustable acoustic-optic Q-switched double cladded fiber laser embodiment 1 of pulsewidth of the present invention.
Fig. 2 is the structural representation of the adjustable acoustic-optic Q-switched double cladded fiber laser embodiment 2 of pulsewidth of the present invention.
Embodiment
See also Fig. 1 earlier, Fig. 1 is the structural representation of the adjustable acoustic-optic Q-switched double cladded fiber laser embodiment 1 of pulsewidth of the present invention.As seen from Figure 1, the acoustic-optic Q-switched double cladded fiber laser that pulsewidth of the present invention is adjustable, its structure comprise with optical axis the resonant cavity completely reflecting mirror 1, doubly clad optical fiber 2, light beam regulation coupler 3, acousto-optic modulator 7, the output coupling mirror 8 that set gradually, described light beam is adjusted coupler 3 and is made up of the iris diaphgram 4 and first lens 5, by the laser pulse width of described output coupling mirror 8 outputs, regulate by iris diaphgram 4.
Consult Fig. 2, Fig. 2 is the structural representation of the adjustable acoustic-optic Q-switched double cladded fiber laser embodiment 2 of pulsewidth of the present invention.As seen from the figure, embodiment 2 is that with the difference of embodiment 1 described lens are the set of lenses that formed by first lens 5 and second lens 6.
Described resonator mirror 1 is plated film chamber mirror or the Fiber Bragg Grating FBG that optical maser wavelength is had high reflectance.
The logical light face of described first lens 5, second lens 6, acousto-optic modulator 7 all has the anti-reflection film to optical maser wavelength.
The iris diaphgram 4 that described light beam is adjusted in the coupler 3 is adjustable continuously in the beam size scope, and adjustable accuracy is 0.1mm.
The front/rear end of described doubly clad optical fiber 2 has an inclination angle.
The parameter of lifting a specific embodiment below is described below:
Adopting the length of doubly clad optical fiber 2 is 7.5m, and Yb mixes in the fibre core
3+Inner cladding is of a size of 100 * 200um (NA=0.47), and core diameter is 10um (NA=0.16), acousto-optic modulator 7 operating frequency 10kHz, the aperture variable range of iris diaphgram 4 is 1-8mm, and the focal length of first lens (5), second lens (6) is respectively 10mm, 6mm.The output laser pulse width that obtains is adjustable at 60ns-120ns, if suitably select the relevant parameter coupling, pulse duration can be adjustable in a wider context.
Experiment shows, that the present invention has is simple in structure, volume is little, the pulse width adjustable extent big and The characteristics such as practical.
Claims (6)
1. acoustic-optic Q-switched double cladded fiber laser that pulsewidth is adjustable, be characterised in that its structure comprise with optical axis the resonant cavity completely reflecting mirror (1), doubly clad optical fiber (2), light beam regulation coupler (3), acousto-optic modulator (7), the output coupling mirror (8) that set gradually, described light beam regulation coupler (3) is made up of iris diaphgram (4) and collimating lens, by the laser pulse width of described output coupling mirror (8) output, regulate by iris diaphgram (4).
2. the adjustable acoustic-optic Q-switched double cladded fiber laser of pulsewidth according to claim 1 is characterized in that described collimating lens is einzel lens or set of lenses.
3. the adjustable acoustic-optic Q-switched double cladded fiber laser of pulsewidth according to claim 1 is characterized in that described resonant cavity completely reflecting mirror (1) is plated film chamber mirror or the Fiber Bragg Grating FBG that optical maser wavelength is had high reflectance.
4. the adjustable acoustic-optic Q-switched double cladded fiber laser of pulsewidth according to claim 1, it is characterized in that described collimating lens is made up of first lens (5) and second lens (6), the logical light face of described first lens (5), second lens (6) and acousto-optic modulator (7) all has the anti-reflection film to optical maser wavelength.
5. the adjustable acoustic-optic Q-switched double cladded fiber laser of pulsewidth according to claim 1 is characterized in that described iris diaphgram (4) is adjustable continuously in the beam size scope, and adjustable precision is 0.1mm.
6. according to the adjustable acoustic-optic Q-switched double cladded fiber laser of each described pulsewidth of claim 1 to 5, it is characterized in that the front/rear end of described doubly clad optical fiber (2) has an inclination angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610027500XA CN100384035C (en) | 2006-06-09 | 2006-06-09 | Pulse width adjustable acousto-optic Q-switched double-cladding optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610027500XA CN100384035C (en) | 2006-06-09 | 2006-06-09 | Pulse width adjustable acousto-optic Q-switched double-cladding optical fiber laser |
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| Publication Number | Publication Date |
|---|---|
| CN1866645A CN1866645A (en) | 2006-11-22 |
| CN100384035C true CN100384035C (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200610027500XA Expired - Fee Related CN100384035C (en) | 2006-06-09 | 2006-06-09 | Pulse width adjustable acousto-optic Q-switched double-cladding optical fiber laser |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950915A (en) * | 2010-09-07 | 2011-01-19 | 长春理工大学 | Resonant cavity capable of obtaining hollow laser beams |
| CN102122790B (en) * | 2011-01-11 | 2012-04-18 | 中国科学院上海光学精密机械研究所 | Single-end optical fiber coupled linear polarization acousto-optic Q-switched optical fiber laser |
| CN102244360A (en) * | 2011-05-24 | 2011-11-16 | 深圳市创鑫激光技术有限公司 | Acousto-optic Q-switched high-power pulse fiber laser |
| CN102496845B (en) * | 2011-11-25 | 2016-05-18 | 西安电子科技大学 | A kind of method for designing of power ratio control acousto-optic Q modulation laser |
| CN103094819A (en) * | 2013-01-16 | 2013-05-08 | 中国科学院上海光学精密机械研究所 | Narrow line width acousto-optic Q-switched thulium mixed fiber laser |
| CN106785837A (en) * | 2016-12-15 | 2017-05-31 | 吉林大学 | One kind eliminates the Q impulse optical fiber laser output rough control method of pulse |
| CN108521067B (en) * | 2018-03-07 | 2019-10-18 | 西安电子科技大学 | A kind of Q-switched laser of adjustable pulse width |
| CN109038213A (en) * | 2018-10-24 | 2018-12-18 | 江苏天元激光科技有限公司 | A kind of high-power semiconductor laser focusing export structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587483B2 (en) * | 1999-12-04 | 2003-07-01 | Carl Zeiss Jena Gmbh | Q-switched solid state laser with adjustable pulse length |
| US6721089B1 (en) * | 2001-11-04 | 2004-04-13 | Ciena Corporation | Method and apparatus for expanding the dynamic range of optical amplifiers |
| EP1608048A2 (en) * | 2004-06-14 | 2005-12-21 | JDS Uniphase Corporation | Pulsed laser apparatus and method |
| US20060039419A1 (en) * | 2004-08-16 | 2006-02-23 | Tan Deshi | Method and apparatus for laser trimming of resistors using ultrafast laser pulse from ultrafast laser oscillator operating in picosecond and femtosecond pulse widths |
| CN1776974A (en) * | 2005-11-29 | 2006-05-24 | 胡姝玲 | Short-pulse ytterbium-doped double-cladded-layer optical fiber laser |
| CN2899205Y (en) * | 2006-06-09 | 2007-05-09 | 中国科学院上海光学精密机械研究所 | Pulse width adjustable acousto-optic Q-switched double-cladding optical fiber laser |
-
2006
- 2006-06-09 CN CNB200610027500XA patent/CN100384035C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587483B2 (en) * | 1999-12-04 | 2003-07-01 | Carl Zeiss Jena Gmbh | Q-switched solid state laser with adjustable pulse length |
| US6721089B1 (en) * | 2001-11-04 | 2004-04-13 | Ciena Corporation | Method and apparatus for expanding the dynamic range of optical amplifiers |
| EP1608048A2 (en) * | 2004-06-14 | 2005-12-21 | JDS Uniphase Corporation | Pulsed laser apparatus and method |
| US20060039419A1 (en) * | 2004-08-16 | 2006-02-23 | Tan Deshi | Method and apparatus for laser trimming of resistors using ultrafast laser pulse from ultrafast laser oscillator operating in picosecond and femtosecond pulse widths |
| CN1776974A (en) * | 2005-11-29 | 2006-05-24 | 胡姝玲 | Short-pulse ytterbium-doped double-cladded-layer optical fiber laser |
| CN2899205Y (en) * | 2006-06-09 | 2007-05-09 | 中国科学院上海光学精密机械研究所 | Pulse width adjustable acousto-optic Q-switched double-cladding optical fiber laser |
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| CN1866645A (en) | 2006-11-22 |
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