CN102545014A - Method for double-pulse laser with wavelengths of 1.0mu m and 1.3mu m - Google Patents
Method for double-pulse laser with wavelengths of 1.0mu m and 1.3mu m Download PDFInfo
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- CN102545014A CN102545014A CN2010106028676A CN201010602867A CN102545014A CN 102545014 A CN102545014 A CN 102545014A CN 2010106028676 A CN2010106028676 A CN 2010106028676A CN 201010602867 A CN201010602867 A CN 201010602867A CN 102545014 A CN102545014 A CN 102545014A
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Abstract
The invention belongs to the technical field of physics laser and relates to a method for two all solid-state pulse laser with the wavelength of 1.0mu m and 1.3mu m. The used double-pulse laser with the wavelengths of 1.0mu m and 1.3mu m comprises a pumping source, an optical fiber, a coupling system, a laser gain crystal, an endoscope for coating the double wavelengths of 1.0mu m and 1.3mu m, and two optical switches, wherein the endoscope comprises an input mirror, a turning mirror and two output mirrors to form a composite laser cavity of the laser. The method comprises the following steps of: making the laser generated by the pumping source pass through the optical fiber, the coupling system and the input mirror in turn so as to pump the laser gain crystal; modulating laser with the wavelengths of 1.0mu m and 1.3mu m through the two optical switches, and establishing laser oscillation of 1.0mu m and 1.3mu m; and outputting pulse laser with the wavelengths of 1.0mu m and 1.3mu m through the two output mirrors respectively. Optical switching devices for the wavelengths of 1.0mu m and 1.3mu m are readily available, and the laser has the advantages of compact structure, small volume, low manufacturing cost, high efficiency and high stability.
Description
Technical field:
The invention belongs to the physics laser technology field, relate to a kind of double-pulse laser system, relating in particular to a kind of wavelength is two kinds of complete solid state pulse laser means of 1.0 μ m/1.3 μ m.
Background technology:
The double-pulse laser device is the device that can export the pulse laser of two kinds of wavelength, and its main feature is two radiation spectral lines of excitation laser crystal, with the laser generation of two kinds of wavelength of a cover laser aid realization, the pulse laser of two kinds of wavelength of output.At present; Research and patented technology to the double-wavelength pulse laser; All concentrate on the registration of laser on time and space that as far as possible improves two kinds of wavelength, when two radiation spectral lines have coincidence on time and space when, just have the competition of two kinds of patterns; Thereby cause laser output power unstable, perhaps wherein the repressed problem of radiation of a spectral line.For some application, for example and frequently, the pulse matching of two kinds of wavelength is necessary; And do not need two pulses in the space or the application that overlaps on the time for some, for example: be used for the dual-wavelength laser of PDT (PDT), then do not need the coincidence of two pulses fully, but power output and power stability are had higher requirement.Mostly the double-wavelength pulse laser of selling in the market is to adopt two blocks of laser crystals, and two cover laser aids obtain different wavelengths through between two lasers, switching, or based on the double-pulse laser of fundamental frequency and frequency multiplication; These utilize two cover lasers to produce the apparatus of dual wavelength, use inconvenience, and package assembly is complicated, and the involutory property of laser is relatively poor.
Summary of the invention:
The objective of the invention is to overcome the shortcoming that prior art exists; Seek to design a kind of double-pulse laser system and method; Adopt a laser crystal and a cover laser, excite two radiation spectral lines of crystal respectively, 1.0 μ m laser pulses and 1.3 μ m laser pulses are not overlapped on room and time fully; Eliminate the power output wild effect that mode competition causes, make it in medical treatment, beauty treatment and industry, have application prospect.
To achieve these goals; The wavelength that the present invention uses be the double-pulse laser device of 1.0 μ m/1.3 μ m comprise pumping source, optical fiber, coupled system, laser gain crystal, to chamber mirror and two optical switches of 1.0 μ m/1.3 μ m dual wavelength plated films, the chamber mirror comprises an input mirror, turning mirror and two outgoing mirrors and constitutes the laser composite laser carity; The laser that pumping source is produced passes through optical fiber, coupled system and input mirror pumping laser gain crystal successively; Respectively the laser of 1.0 μ m and 1.3 μ m is modulated through two optical switches again; In composite laser carity, set up 1.0 μ m and 1.3 μ m laser generations, export the pulse laser of 1.0 μ m and 1.3 μ m then by two outgoing mirrors respectively.
The laser gain crystal that the present invention relates to comprises Nd:YVO
4, Nd:YAG, Nd:GdVO
4, Nd:YLF, Nd:YAP, and other has the laser crystal of 1.0 μ m and two radiation spectral lines of 1.3 μ m.
Input mirror of the present invention and outgoing mirror are respectively input and two outputs of composite laser carity, and turning mirror is arranged between laser gain crystal and the optical switch, constitute composite laser carity, make the laser cavity of two kinds of wavelength relatively independent.
Two optical switches among the present invention are respectively to 1.0 μ m laser and 1.3 μ m laser; Laser pulse is in the cut-off signals of optical switch, to form; The time interval between the adjacent cut-off signals of two optical switches equals the upper level lifetime of laser gain crystal, to eliminate 1.0 μ m and 1.3 μ m laser in intracrystalline mode competition, improves the stability of laser; Make the last energy level inverted population of 1.0 μ m and 1.3 μ m obtain accumulation simultaneously, improve the efficient of laser.
The present invention uses rare-earth ion-doped laser gain crystal, and to the dual wavelength cavity mirror plating membrane technology of 1.0 μ m and 1.3 μ m, its 1.0 μ m and 1.3 μ m light shutter devices are easy to get, and laser structure is compact, volume is little, cost is low, efficient is high, good stability.
Description of drawings:
Fig. 1 is the laser device structural principle sketch map that the present invention relates to use.
Fig. 2 is the cut-off signals principle schematic of two optical switches of the present invention.
Embodiment:
Below through embodiment and combine accompanying drawing to be described further.
The laser that present embodiment relates to use comprises pumping source 1, optical fiber 2, coupled system 3, input mirror 4, laser gain crystal 5, turning mirror 6, optical switch 7, outgoing mirror 8, optical switch 9 and outgoing mirror 10; Wherein input mirror 4, turning mirror 6, outgoing mirror 8 and 10 are formed composite laser carity; The light source that pumping source 1 produces is through optical fiber 2, coupled system 3, input mirror 4; Pumping laser gain crystal 5; The 1.0 μ m of excitation laser gain crystal 5 and the stimulated radiation of two spectral lines of 1.3 μ m; Optical switch 7 and 9 is modulated the laser of two kinds of wavelength respectively, in composite laser carity, sets up 1.0 μ m and 1.3 μ m laser generations, exports 1.0 μ m and 1.3 μ m pulse lasers respectively by outgoing mirror 8 and 10; The upper level lifetime that time interval t1 between optical switch 7 and 9 the adjacent cut-off signals and t3 equal the laser gain crystal.
The laser crystal that present embodiment uses has the crystal of 1.0 μ m and two radiation spectral lines of 1.3 μ m; The adjacent cut-off signals time interval t1 of two optical switches and t3 can confirm according to crystal; The curvature of each chamber mirror and the total length of laser cavity change according to actual conditions; 1.0 μ m laser and 1.3 μ m laser by outgoing mirror 8 and outgoing mirror 10 outputs, can be selected arbitrarily according to actual needs respectively, only need to change the filming parameter of turning mirror 6, outgoing mirror 8 and 10, and get final product with this position of confirming optical switch 7,9.
Embodiment 1:
1.0 μ m/1.3 μ m double-pulse laser devices of the identical repetition rate that relates to according to embodiment 1, laser gain crystal 5 or select Nd:YAG, Nd:GdVO
4, or having the other laser gain crystal of these two spectral lines, optical switch 7 and 9 cut-off signals be t1 at interval, and t3 confirms according to the laser gain crystal.
Embodiment 2:
Present embodiment relates to a kind of 1.047 μ m/1.321 μ m double-pulse laser methods of different repetition rates, the repetition rate 500Hz of 1.047 μ m laser, the repetition rate 1000Hz of 1.321 μ m laser; Pumping source 1 is the diode laser of 796nm output; Through optical fiber 2, coupled system 3 and input mirror 4 pumping laser gain crystal 5s; The laser gain crystal 5 is the a-cut-Nd:YLF crystal, 4 couples 1.047 μ m of input mirror and all high reflection of 1.321 μ m laser, the high reflection of the 6 couples 1.047 μ m of turning mirror and to the high transmission of 1.321 μ m laser; The repetition rate 1000Hz of the cut-off signals of 7 couples 1.321 μ m of optical switch laser; 8 pairs 1.047 high transmissions of μ m of outgoing mirror and to the transmissivity 3% of 1.321 μ m laser, the repetition rate 500Hz of the cut-off signals of 9 couples 1.047 μ m of optical switch laser, 10 couples 1.047 μ m of outgoing mirror transmissivity 5%; Optical switch 7 and 9 cut-off signals be t1=t3=0.5ms at interval; T2=1ms by the 1.321 μ m pulse lasers of outgoing mirror 8 acquisition repetition rate 1000Hz, is obtained the 1.047 μ m pulse lasers of repetition rate 500Hz by outgoing mirror 10.
Different repetition rates 1.0 μ m/1.3 μ m double-pulse laser devices according to embodiment 2 making; Laser gain crystal 5 or have the crystal of 1.0 μ m/1.3 μ m spectral lines, the repetition rate of two kinds of laser confirm according to the laser crystal of actual needs and use, correspondingly t1; T2, t3 also changes.
The 1.0 μ m/1.3 μ m double-pulse laser devices that relate to according to embodiment 1 and 2, or adopt the mode of profile pump, two kinds of laser are all by input mirror 4 outputs, as long as correspondingly change the filming parameter of chamber mirror 4,8 and 10.
1.0 μ m/1.3 μ m double-pulse laser devices according to embodiment 1 and 2 relates to increase frequency conversion crystal in laser cavity or outside the laser cavity, obtain the more pulse laser of multi-wavelength.
According to the double-pulse laser device that embodiment 1 and 2 relates to, be used to realize the double-pulse laser of other wavelength, as long as wavelength basis is correspondingly changed device and changed parameter.
Claims (4)
1. double-pulse laser method that wavelength is 1.0 μ m/1.3 μ m; The wavelength that uses be the double-pulse laser device of 1.0 μ m/1.3 μ m comprise pumping source, optical fiber, coupled system, laser gain crystal, to chamber mirror and two optical switches of 1.0 μ m/1.3 μ m dual wavelength plated films, the chamber mirror comprises an input mirror, turning mirror and two outgoing mirrors and constitutes the laser composite laser carity; It is characterized in that the laser that pumping source is produced passes through optical fiber, coupled system and input mirror pumping laser gain crystal successively; Respectively the laser of 1.0 μ m and 1.3 μ m is modulated through two optical switches again; In composite laser carity, set up 1.0 μ m and 1.3 μ m laser generations, export the pulse laser of 1.0 μ m and 1.3 μ m then by two outgoing mirrors respectively.
2. wavelength according to claim 1 is the double-pulse laser method of 1.0 μ m/1.3 μ m, it is characterized in that the laser gain crystal that relates to comprises Nd:YVO
4, Nd:YAG, Nd:GdVO
4, Nd:YLF and Nd:YAP, or have the laser crystal of 1.0 μ m and two radiation spectral lines of 1.3 μ m.
3. wavelength according to claim 1 is the double-pulse laser method of 1.0 μ m/1.3 μ m; It is characterized in that input mirror and outgoing mirror are respectively input and two outputs of composite laser carity; Turning mirror is arranged between laser gain crystal and the optical switch; Constitute composite laser carity, make the laser cavity of two kinds of wavelength relatively independent.
4. wavelength according to claim 1 is the double-pulse laser method of 1.0 μ m/1.3 μ m; It is characterized in that two optical switches are respectively to 1.0 μ m laser and 1.3 μ m laser; Laser pulse is in the cut-off signals of optical switch, to form; The time interval between the adjacent cut-off signals of two optical switches equals the upper level lifetime of laser gain crystal; To eliminate 1.0 μ m and 1.3 μ m laser in intracrystalline mode competition, improve the stability of laser, make the last energy level inverted population of 1.0 μ m and 1.3 μ m obtain accumulation simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106028676A CN102545014A (en) | 2010-12-13 | 2010-12-13 | Method for double-pulse laser with wavelengths of 1.0mu m and 1.3mu m |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106028676A CN102545014A (en) | 2010-12-13 | 2010-12-13 | Method for double-pulse laser with wavelengths of 1.0mu m and 1.3mu m |
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| CN2010106028676A Pending CN102545014A (en) | 2010-12-13 | 2010-12-13 | Method for double-pulse laser with wavelengths of 1.0mu m and 1.3mu m |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932078A (en) * | 2019-11-25 | 2020-03-27 | 中国科学院合肥物质科学研究院 | Medium-far infrared multiband laser |
| CN112914722A (en) * | 2021-03-04 | 2021-06-08 | 广州市激光技术应用研究所有限公司 | Laser operation device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702925A (en) * | 2005-06-13 | 2005-11-30 | 山东师范大学 | Intermittent oscillated dual-wavelength full-solid-state laser |
| CN1870361A (en) * | 2006-07-11 | 2006-11-29 | 长春理工大学 | Semiconductor laser pumping double-channel passive Q regulation pulse sum frequency laser |
| CN1983746A (en) * | 2005-12-16 | 2007-06-20 | 中国科学院福建物质结构研究所 | Multi-wavelength and Q-modulating laser |
| CN101483309A (en) * | 2009-01-21 | 2009-07-15 | 山东大学 | Dual wavelength laser using saturable absorber as frequency selection and Q switched element, application thereof |
-
2010
- 2010-12-13 CN CN2010106028676A patent/CN102545014A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702925A (en) * | 2005-06-13 | 2005-11-30 | 山东师范大学 | Intermittent oscillated dual-wavelength full-solid-state laser |
| CN1983746A (en) * | 2005-12-16 | 2007-06-20 | 中国科学院福建物质结构研究所 | Multi-wavelength and Q-modulating laser |
| CN1870361A (en) * | 2006-07-11 | 2006-11-29 | 长春理工大学 | Semiconductor laser pumping double-channel passive Q regulation pulse sum frequency laser |
| CN101483309A (en) * | 2009-01-21 | 2009-07-15 | 山东大学 | Dual wavelength laser using saturable absorber as frequency selection and Q switched element, application thereof |
Non-Patent Citations (1)
| Title |
|---|
| GEORGE A. HENDERSON: "A computational model of a dualwavelength solidstate laser", 《APPLIED PHYSICS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932078A (en) * | 2019-11-25 | 2020-03-27 | 中国科学院合肥物质科学研究院 | Medium-far infrared multiband laser |
| CN112914722A (en) * | 2021-03-04 | 2021-06-08 | 广州市激光技术应用研究所有限公司 | Laser operation device |
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Application publication date: 20120704 |