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1.
从LD端面抽运固体激光器的激光阈值公式出发,建立了双波长激光同时振荡的阈值条件,理论计算了腔镜对于两个波长的透过率关系,实现了LD端面抽运Nd:YAG 1319nm/1338nm双波长激光连续和准连续输出.双波长激光连续输出功率可达6W,斜效率为30%;准连续输出功率在重复频率50kHz时可达4.75W,斜效率为24.73%,脉冲宽度为55.05ns;腔内插入布儒斯特片,在重复频率为50kHz时,双波长激光准连续线偏振输出功率可达2.22W,不稳定性小于0.52%,M2
关键词:
端泵Nd:YAG激光器
1319nm/1338nm双波长
声光调Q
太赫兹波 相似文献
2.
Yong Wei Ge Zhang Chenghui Huang Lingxiong Huang Min Wei 《Optics & Laser Technology》2006,38(3):173-176
Through reasonable coating design to suppress the 1064 nm strongest emission line as well as the 1318.8 nm one, a 1338 nm high-power Nd:YAG quasi-continuous wave (QCW) laser pumped with a Kr lamp has been successfully developed. As high as 102 W of average output power at the 1338 nm single wavelength has been obtained with the overall and slope efficiencies of 4.6% and 6.3%, respectively, when the average pump power is 2200 W. Its threshold power is about 400 W. 相似文献
3.
从LD端面抽运固体激光器的激光阈值公式出发,建立了双波长激光同时振荡的阈值条件,理论计算了腔镜对于两个波长的透过率关系,实现了LD端面抽运Nd:YAG 1319nm/1338nm双波长激光连续和准连续输出.双波长激光连续输出功率可达6W,斜效率为30%;准连续输出功率在重复频率50kHz时可达4.75W,斜效率为24.73%,脉冲宽度为55.05ns;腔内插入布儒斯特片,在重复频率为50kHz时,双波长激光准连续线偏振输出功率可达2.22W,不稳定性小于0.52%,M2 相似文献
4.
报道了一台激光二极管端面抽运Nd:YVO4晶体内腔三倍频355 nm激光连续输出的全固态紫外激光器.激光腔采用紧凑型简单凹平直腔,腔长仅为70 mm.利用两块LBO晶体进行腔内倍频、和频,当注入抽运功率为2527 W时,获得最大功率为306 mW的355 nm连续波输出,光光转换效率为012%,输出功率短期不稳定性为53%,355 nm激光输出光束质量良好.通过采用内腔倍频技术和设计合理的腔参数,实现了中小功率连续输出的全固态紫外激光器的小型化、便携化,进一步拓宽了紫外激光器
关键词:
激光二极管端面抽运
内腔三倍频
连续波
355 nm激光 相似文献
5.
从LD端面抽运固体激光器的激光阈值公式出发,建立了双波长激光同时振荡的阈值条件,理论计算了腔镜对于两个波长的透过率关系,实现了LD端面抽运Nd:YAG 1319 nm/1338 nm双波长激光连续和准连续输出.双波长激光连续输出功率可达6 W,斜效率为30%;准连续输出功率在重复频率50 kHz时可达4.75 W,斜效率为24.73%,脉冲宽度为55.05 na;腔内插入布儒斯特片,在重复频率为50 kHz时,双波长激光准连续线偏振输出功率可达2.22 W,不稳定性小于0.52%,M2因子仅为1.16.这两条非常接近的谱线为进一步通过非线性光学差频方法获得高相干性太赫兹波提供了实验基础. 相似文献
6.
Based on rate equations,this paper gives expressions of the output power,the pump power threshold,the slope efficiency,the fibre optimal length and the laser gain of a quasi-three-level Yb-doped fibre laser.The gain relationship between quasi-three-level system and four-level system is also given,which provides a theoretical basis for suppressing the four-level transmissions.In the experiment,we adopt the backward pumping configuration and use a linear cavity.The Yb-doped fibre laser has an output power of 372 mW of single-mode laser emission at 980 nm with a slope efficiency of 21.2% when the fibre length is 29.5 cm close to an optimal fibre length in theory.The experimental results accord well with the theoretical analyses. 相似文献
7.
报道了一种适合中小功率输出的全固态激光器的角抽运方法, 抽运光从板条激光器中板条晶体的角部入射, 可获得较高的抽运效率和较好的抽运均匀性.采用单角抽运方式, 首次进行了角抽运Nd:YAG复合板条946 nm连续运转激光器的实验研究. 激光腔采用紧凑型平凹直腔结构, 腔长仅为20 mm. 当注入抽运功率为50 W时, 946 nm激光连续输出功率最高达5.29 W, 光光转换效率为10.6%, 斜效率为12%. 整台激光器结构紧凑, 调谐简单, 成本低, 具有广阔的应用前景.
关键词:
角抽运
Nd:YAG晶体
连续波
946 nm激光 相似文献
8.
Baole Lu Haowei Chen Jiaxi Guo Renjian Zhang Zhaoyu Ren 《Optics Communications》2011,284(7):1941-1944
A dual-wavelength laser at 1064 nm and 1319 nm is obtained by a single Nd:YAG crystal rod. On the basis of 1064 nm and 1319 nm dual-wavelength laser installation, the second harmonic waves at 532 nm and 660 nm can be achieved by using non-linear frequency conversion technology. When 1064 nm and 1319 nm lasers oscillate simultaneously, the maximum output power is 30.5 W and 8.78 W, respectively. When the 1319 nm laser is restrained, we obtain a 35.6 W maximum output power at 1064 nm and by contrary 11.2 W at 1319 nm. The maximum output powers of 532 nm and 660 nm lasers are 5.34 W and 1.353 W when oscillating simultaneously. With one of them restrained, the maximum output power is 6.72 W at 532 nm and 1.90 W at 660 nm. The optimum repetition rate of the acousto-optic Q-switch is 10.5 KHz and 20.5 KHz for 532 nm and 660 nm lasers, respectively. The optical-to-optical conversion efficiency from the fundamental waves to the harmonic waves is 17.5% and 15.4%. The instability is less than 2%. 相似文献
9.
A continuous wave (CW) Nd:YAG infrared laser at 1319 nm is reported in this paper. The energy level of 1319-nm wave was analyzed. The repression of 1064-nm lasing and enhancement of 1319-nm output power were discussed. Mirror coating and cavity structure were studied and a maximum CW output power of 43 W at 1319 nm was achieved in experiments. 相似文献
10.
A new laser transition at 1112 nm was obtained after analyzing the parameters of the main laser transitions in Nd:YAG and calculating the transmission loss of the cavity at 1064, 1319, and 946 nm. The maximum output power of the fundamental wavelength was 610 mW, the fundamental wavelength light-to-light conversion efficiency was 38.1%, the maximum output at 556 nm was 109 mW intra-cavity frequency doubled by LBO, the SHG conversion efficiency was 17.8%, and the overall light-to-light efficiency was 6.8% for the pump power of 1.6 W. 相似文献
11.
An efficient compact diode-pumped acousto-optic actively Q-switched Nd:YAG ceramic laser operating at 1319 nm was demonstrated.
At an incident pump power of 23.7 W, an average output power of 4.8 W at a pulse repetition frequency of 30 kHz was obtained.
The corresponding optical-to-optical conversion efficiency was 20.3%. A maximum single pulse energy of 316 μJ with a pulse
duration of 78.5 ns was obtained at an incident pump power of 19.4 W and a pulse repetition frequency of 10 kHz. 相似文献
12.
The continuous-wave high efficiency laser emission of Nd:YAG at the fundamental wavelength of 1319 nm and its 659.5-nm second
harmonic obtained by intracavity frequency doubling with an LBO nonlinear crystal is investigated under pumping by diode laser
at 885 nm (on the 4
F
3/2 → 4
I
13/2 transition). An end-pumped Nd:YAG crystal yielded 9.1 W at 1319 nm of continuous-wave output power for 18.2 W of absorbed
pump power. The slope efficiency with respect to the absorbed pump power is 0.55. Furthermore, 5.2 W 659.5 nm red light is
acquired by frequency doubling, resulting in an optical-to-optical efficiency with respect to the absorbed pump power of 0.286.
Comparative results obtained for the pump with diode laser at 808 nm (on the 4
F
5/2 → 4
I
13/2 transition) are given in order to prove the advantages of the 885 nm wavelength pumping. 相似文献
13.
Changqing Q Wang Y.T Chow W.A Gambling Duorong Yuan Dong Xu Guanghui Zhang Mingguo Liu Minhua Jiang 《Optics & Laser Technology》1998,30(5):291-293
We report the intracavity-frequency-doubling of a 946 nm Nd:YAG laser with a CMTC crystal at room temperature. A cw output power of 1.64 mW of blue light at 473 nm is obtained. To our knowledge, this is the first time that CMTC crystal has been used to frequency double a 946 nm Nd:YAG laser. 相似文献
14.
An investigation of the output characteristics of Nd:YAG lasers operating at a wavelength of 1444 nm using a Xe-flashlamp of 450 Torr, a Xe-flashlamp of 700 Torr, and a Kr-flashlamp of 700 Torr is reported. The highest electrical-to-optical conversion efficiency of 1.83% was attained using the Kr-flashlamp of 700 Torr with a repetition rate of 20 Hz, a pumping pulse width of 144 μs, and an input energy of 31.7 J. The investigation concluded that output energy depends on the temperature of cooling water. The results showed a 3% decrease in output energy at an input energy of 31.7 J as the temperature of cooling water was increased from 23 to 38 °C. 相似文献
15.
根据计算得到的双波长激光振荡的阈值条件,激光实验中对全反镜镀制1 319和1 338 nm的全反膜(其反射率大于99.73%,而对1 064 nm激光的反射率约为7%);输出镜采用对1 064 nm强谱线95%的高透过率,而对1 319和1 338 nm谱线的透过率分别为34.7%,32.5%,有效抑制了强线1 064 nm振荡,成功实现了1 319和1 338 nm Nd:YAG同时双波长激光脉冲输出。当输入能量为125 J时,1 319和1 338 nm脉冲双波长激光的单脉冲总输出能量为0.89 J,电-光转换效率为0.71%,斜率效率为0.89%。输出的双波长激光的中心波长分别在1 318.8和1 338.2 nm处,谱线宽度(FWHM)分别为0.35和0.48 nm,强度之比为36:44。 相似文献
16.
High power high beam quality diode-pumped 1319-nm Nd:YAG oscillator-amplifier laser system
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This paper demonstrated a high power and high beam quality
diode-pumped 1319-nm Nd:YAG master oscillator-power amplifier laser
system. A thermally near-unstable resonator with four-rod
birefringence compensation flat--flat cavity was adopted as the
master oscillator. A solid etalon was inserted in the unidirectional
ring resonator to compress the laser linewidth. Under a repetition
rate of 500~Hz and pulse width of 160~\mus, the master oscillator
delivers an average output power of 16.8~W at 1319~nm with linear
polarisation, beam quality factor M^{2} = 1.16 and linewidth of
3.2~GHz. A double-pass power amplifier with two amplifier stages was
employed for higher power scaling and the output power was amplified
to be 25.9~W with M^{2} = 1.43. 相似文献
17.
根据计算得到的双波长激光振荡的阈值条件,激光实验中对全反镜镀制1 319和1 338 nm的全反膜(其反射率大于99.73%,而对1 064 nm激光的反射率约为7%);输出镜采用对1 064 nm强谱线95%的高透过率,而对1 319和1 338 nm谱线的透过率分别为34.7%,32.5%,有效抑制了强线1 064 nm振荡,成功实现了1 319和1 338 nm Nd:YAG同时双波长激光脉冲输出。当输入能量为125 J时,1 319和1 338 nm脉冲双波长激光的单脉冲总输出能量为0.89 J,电-光转换效率为0.71%,斜率效率为0.89%。输出的双波长激光的中心波长分别在1 318.8和1 338.2 nm处,谱线宽度(FWHM)分别为0.35和0.48 nm,强度之比为36:44。 相似文献
18.
We demonstrated the highly efficient continuous wave(CW)and Q-switched infrared laser from a diodeside-pumped Nd:YAG crystal.A CW output as high as 66 W at 1319 nm was achieved under the pump power of 460 W,corresponding to a coversion efficiency of 14.3%.A maximum average power of 8.9 W of TEM00 mode was obtained in Q-switched operation at the repetition rate of 8 kHz.The performance of the laser considering the thermal lens effect induced by pump power Was also analyzed. 相似文献
19.
20.
Fan Shuzhen Wang Qingpu Liu Zhaojun Li Lei Cong Zhenhua Chen Xiaohan Zhang Xiaolei 《Optics Communications》2011,284(6):1642-1644
An acousto-optically Q-switched self-Raman laser emitting at 1097 nm is demonstrated with a c-cut Nd:YVO4 crystal, using a fiber-coupled 880 nm diode laser as the pumping source. Raman laser performances in concave-plane and plane-plane oscillating cavities are studied and compared. With an absorbed diode power of 12.4 W and a pulse repetition rate of 50 kHz, the highest output power of 1.45 W is obtained from the plane-plane cavity, corresponding to an optical-to-optical conversion efficiency of 11.7%. 相似文献