CN2674720Y - End pumping regulating Q solid laser - Google Patents
End pumping regulating Q solid laser Download PDFInfo
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- CN2674720Y CN2674720Y CN 200420015109 CN200420015109U CN2674720Y CN 2674720 Y CN2674720 Y CN 2674720Y CN 200420015109 CN200420015109 CN 200420015109 CN 200420015109 U CN200420015109 U CN 200420015109U CN 2674720 Y CN2674720 Y CN 2674720Y
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Abstract
The utility model provides an end pumping regulating Q solid laser, comprising a pumping source, an optical coupling system, and an optics resonant cavity comprising a total reflector and an output mirror. The interior of the optics resonant cavity is provided with laser medium; a regulating Q device is arranged between the laser medium and the output mirror of the optics resonant cavity; the optical coupling system comprises a collimation lens and a focusing lens; the collimation lens, the focusing lens, the total reflector, the laser medium, the regulating Q device, and the output mirror are respectively positioned on the same light axis; the focusing lens can horizontally move along the light axis direction. The mode matching of the pumping light of the laser and the resonant cavity is realized by regulating the focusing lens; the volume of the laser is small, and the optical-optical conversion efficiency and output power are high; the pumping source, the optical coupling system, and the resonant cavity can transmit without externally connected to optical fiber; the transmission loss is small, and the cost is low.
Description
Technical field
The utility model relates to laser technology field, specifically is a kind of end pumping Q-switch solid laser.
Background technology
End-pumped laser is simple because of its device, characteristics such as gain media is very abundant to the absorption of pump light, efficient height are welcome, yet variation because of pumping light power etc., the thermal focal length of laser medium will change, the pump spot radius and the radius of curvature of Ju Jiing also changes simultaneously, these will cause the mould coupling of oscillation light and pump light destroyed, thereby reduce the power output and the efficient of laser.
Traditional end-pumped laser solves the mould matching problem of above-mentioned oscillation light and pump light mostly by the optical length of adjusting resonant cavity, comprise the pumping source that is positioned on the same optical axis as Chinese patent " the high-efficiency high power solid state laser of laser diode end-face pump " (patent No. is 02278626.0), optical coupling system, the optical resonator of forming by total reflective mirror and outgoing mirror and be arranged on solid laser medium between two mirrors, this laser is by adjusting the mould matching problem of pump light and oscillation light along the total reflective mirror of optical axis direction translation resonant cavity, this method has not only increased the volume of whole laser, and can influence the oscillation mode of light in the resonant cavity, thereby the output of laser is affected.
In addition, overwhelming majority research is confined to the continuous or quasi-continuous of laser at home, laser is transferred Q research seldom, these problems have all hindered the commercialization of high power end pumping Q-switched laser, the domestic present end pumping Q-switch solid laser product of power output more than 10W that also do not have.
Summary of the invention
In order to overcome the prior art above shortcomings, the utility model provides a kind of end pumping Q-switch solid laser, this laser mates by the mould of adjusting pump light and oscillation light along optical axis direction translation condenser lens, and adopts the acousto-optic Q modulation mode to obtain the purpose that laser output power is big, light-light conversion efficiency is high.
This end pumping Q-switch solid laser comprises pumping source 1, optical coupling system 8 and the optical resonator of being made up of total reflective mirror and outgoing mirror 9, it is characterized in that: in the described optical resonator 9 laser medium 5 is set, between the outgoing mirror 7 of laser medium 5 and optical resonator 9 Q-switching device 6 is set; Described optical coupling system 8 comprises the condenser lens 3 that a collimating lens 2 and that makes pump light become directional light focuses on directional light, described collimating lens 2, condenser lens 3, total reflective mirror 4, laser medium 5, Q-switching device 6, outgoing mirror 7 all are positioned on the optical axis 10, and condenser lens 3 can be along optical axis 10 direction translations.
During use, collimating lens 2 becomes directional light with the laser that pumping source 1 sends, along optical axis 10 direction translation condenser lenses 3 directional light is aggregated into the laser medium 5 that is mapped in the optical resonator 9, this laser optical resonator 9 in, vibrate amplification and after Q-switching device 6 is modulated from outgoing mirror 7 output pulse widths less than 10ns, peak power laser up to 50KW-80KW.
This end pumping Q-switch solid laser is realized the mould coupling of pump light resonant cavity by regulating condenser lens, the laser volume is little, light-light conversion efficiency is high and output is stable, the acousto-optic Q modulation device is set in resonant cavity, improved the power output of laser greatly, its pump light directly is coupled to laser medium by optical coupling system in addition, do not need external optical fiber to transmit, reduced loss, reduced cost.
Description of drawings
Fig. 1 is the light path schematic diagram of this end pumping Q-switch solid laser;
Fig. 2 is that it transfers the impulse waveform that obtains under the Q signal at 20KHz;
Fig. 3 is that it transfers the impulse waveform that obtains under the Q signal at 30KHz;
Fig. 4 is the laser intensity distribution map of present embodiment laser output.
Embodiment
As shown in Figure 1, this end pumping Q-switch solid laser comprises pumping source 1, optical coupling system 8 and the optical resonator of being made up of total reflective mirror and outgoing mirror 9, in the described optical resonator 9 laser medium 5 is set, between the outgoing mirror 7 of laser medium 5 and optical resonator 9 Q-switching device 6 is set; Described optical coupling system 8 comprises the condenser lens 3 that a collimating lens 2 and that makes pump light become directional light focuses on directional light, described collimating lens 2, condenser lens 3, total reflective mirror 4, laser medium 5, Q-switching device 6, outgoing mirror 7 all are positioned on the optical axis 10, and condenser lens 3 can be along optical axis 10 direction translations.
In the present embodiment, it is the laser diode of 808nm that pumping source 1 adopts wavelength, the acousto-optic modulator that Q-switching device 6 adopts the acoustooptic modulation crystal to constitute, and laser medium 5 is Nd-doped yttrium vanadate (Nd:YVO
4) crystal, the total reflective mirror 4 of described optical resonator 9 adopts planar lenss, 4 pairs of 808nm pump lights of total reflective mirror full impregnated, 1.064 μ m laser is all-trans; The outgoing mirror 7 of described optical resonator 9 adopts planar lens, and 7 couples 1.064 μ m of outgoing mirror laser output area is 10%～40%.
The average output power of this laser is greater than 12W, light-light conversion efficiency is greater than 45%, long-time stability are less than 1%, its q-frequency can reach 100KHz, shown in Fig. 2,3, this laser can obtain the impulse waveform of pulsewidth less than 10ns under 20KHz, 30KHz accent Q signal, is illustrated in figure 4 as the laser intensity distribution map of this laser output.
The operation principle of this end pumping of brief description Q-switch solid laser:
In laser when operation,, the laser that sends from laser diode pumping source 1 becomes directional light after by collimating lens 2, and directional light is focused lens 3 and is focused into the Nd:YVO that is mapped in the optical resonator 9
4In the laser medium 5, Nd:YVO
4 Laser medium 5 is energized and sends 1.064 μ m laser, the amplification of in optical resonator 9, vibrating of this laser, after Q-switching device 6 modulation, produce pulsewidth less than 10ns, peak power modulated laser up to 50KW-80KW, the part laser after the modulation sees through outgoing mirror 7 outputs.In the use, can be along optical axis 10 direction translation condenser lenses 3, make the directional light after collimating lens 2 is changed to be aggregated into the laser medium 5 that is mapped in the optical resonator 9, thereby both solved the mould matching problem of oscillation light and pump light, guaranteed that also the laser of laser output is unaffected.
In actual applications, can select the laser diode of various power for use according to different needs pumping source 1 described in the utility model, described laser medium 5 can be selected for use and mix the different various Nd:YVO of Nd (neodymium) concentration
4Crystal, described Q-switching device can be selected the A-O Q-switch device of different frequency such as 27MHz or 40MHz for use, and described total reflective mirror 4 and outgoing mirror 7 can be selected various lens as required for use, as planar lens, the concavees lens of different curvature radius and convex lens.
Claims (5)
1, a kind of end pumping Q-switch solid laser comprises pumping source (1), optical coupling system (8) and the optical resonator of being made up of total reflective mirror and outgoing mirror (9), it is characterized in that:
Laser medium (5) is set in the described optical resonator (9), between the outgoing mirror (7) of laser medium (5) and optical resonator (9) Q-switching device (6) is set;
Described optical coupling system (8) comprises the condenser lens (3) that a collimating lens (2) and that makes pump light become directional light focuses on directional light, described collimating lens (2), condenser lens (3), total reflective mirror (4), laser medium (5), Q-switching device (6), outgoing mirror (7) all are positioned on the optical axis (10), and condenser lens (3) can be along optical axis (10) direction translation.
2, end pumping Q-switch solid laser according to claim 1 is characterized in that: described Q-switching device (6) is the acousto-optic modulator that is made of the acoustooptic modulation crystal.
3, end pumping Q-switch solid laser according to claim 1 is characterized in that: described laser medium (5) is Nd:YVO
4Crystal.
4, end pumping Q-switch solid laser according to claim 1 is characterized in that: the total reflective mirror (4) of described optical resonator (9) is planar lens or convex lens or concavees lens.
5, end pumping Q-switch solid laser according to claim 1 is characterized in that: the outgoing mirror (7) of described optical resonator (9) is planar lens or convex lens or concavees lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420015109 CN2674720Y (en) | 2004-01-16 | 2004-01-16 | End pumping regulating Q solid laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420015109 CN2674720Y (en) | 2004-01-16 | 2004-01-16 | End pumping regulating Q solid laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674720Y true CN2674720Y (en) | 2005-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420015109 Expired - Fee Related CN2674720Y (en) | 2004-01-16 | 2004-01-16 | End pumping regulating Q solid laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146675A (en) * | 2019-12-31 | 2020-05-12 | 中国建筑材料科学研究总院有限公司 | End-pumped Q-switched solid laser |
| CN112003122A (en) * | 2020-08-19 | 2020-11-27 | 罗根激光科技（武汉）有限公司 | Sub-nanosecond infrared solid laser capable of adjusting Q in acousto-optic mode and control method thereof |
| CN113363798A (en) * | 2021-05-20 | 2021-09-07 | 厦门大学 | Adjustable high-optical-efficiency broadband multi-longitudinal-mode Raman microchip laser |
-
2004
- 2004-01-16 CN CN 200420015109 patent/CN2674720Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146675A (en) * | 2019-12-31 | 2020-05-12 | 中国建筑材料科学研究总院有限公司 | End-pumped Q-switched solid laser |
| CN112003122A (en) * | 2020-08-19 | 2020-11-27 | 罗根激光科技（武汉）有限公司 | Sub-nanosecond infrared solid laser capable of adjusting Q in acousto-optic mode and control method thereof |
| CN112003122B (en) * | 2020-08-19 | 2022-10-21 | 罗根激光科技（武汉）有限公司 | Subnanosecond infrared solid laser for acousto-optic Q-switching and control method thereof |
| CN113363798A (en) * | 2021-05-20 | 2021-09-07 | 厦门大学 | Adjustable high-optical-efficiency broadband multi-longitudinal-mode Raman microchip laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050126 |