Cr4+：YAG被动调Q腔外三倍频紫外激光器

基金项目:

国家高技术研究发展计划资助项目(2002AA311141)

详细信息

Cr4+：YAG passively Q-switched extra-cavity third-harmonic laser

1.
Changchun Institute of Optics, Fine Mechanics and Physics, the Chinese Academy of Sciences, Changchun 130022, China;
2.
Graduate School, the Chinese Academy of Sciences, Benjing 100039, China

摘要: 理论上分析了影响腔外三倍频输出效率的各因素,并对Cr4+:YAG小信号透过率、输出镜透过率、聚焦透镜焦距、非线性晶体尺寸的优化选取以及各元件的合理放置进行了讨论.在最大抽运功率为17W的情况下,获得了336mW的355nm准连续紫外激光输出,重复频率为28kHz,脉宽12ns,单脉冲能量为12J,峰值功率为1kW,总的光-光转换效率为2%.
- 激光器 /
- 355nm紫外激光器 /
- Cr4+：YAG /
- 被动调Q /
- 腔外三倍频
Abstract: The factors attributed to the efficiency of the extra-cavity third-harmonic generation are analyzied.The maxium output power of 355nm UV laser is 330mW with the incident pumped power 17W after optimizing the small singal transmittance of the Cr4+:YAG,the transmittance of the output coupler at 1064nm,the focal length of the focusing lens,the nonlinear crystal and aligning the optical elements reasonably.The repetition rates,pusle width,single pulse energy of the pulsed 355nm laser is 28kHz,12ns,12J respectively.The overall light to light efficiency is 2%.
- lasers /
- 355nm ultraviolet laser /
- Cr4+:YAG /
- passively Q-switched /
- extra-cavity third-harmonic

[1]	周城,叶子青,郑权 et al.Cr:YAG被动调Q4倍频全固态紫外激光器的研究[J].激光技术,2003,27(4):339～341.
[2]	何京良,卢兴强,贾玉磊 et al.BBO四倍频全固态Nd:YVO4紫外激光器[J].物理学报,2000,49(10):2106～2108.
[3]	KOJIMA T,KONNO S,FUJIKAWA S et al.20W ultraviolet-beam generation by fourth-harmonic generation of an all-solid-state laser[J].Opt Lett,2000,25(1):58～60.
[4]	AGNESI A,DELL' ACQUA S,PICCININI E et al.Efficient wavelength conversion with high power passively Q-switched diode-pumped neodymium laser[J].IEEE J Q E,1998,34(8):1480～1484.
[5]	高兰兰,檀慧明 et al.LD泵浦全固体355nm紫外脉冲激光器[J].半导体光电,2003,24(2):94～96.
[6]	蓝信钜.激光技术[M].北京:科学出版社,2000.71.
[7]	ZHANG X Y,ZHAO Sh Zh,WANG Q P et al.Optimization of Cr4+doped saturable-absorber Q-switched laser[J].IEEE J Q E,1997,33(12):2286～2294.
[8]	ZAYHOWSKI J,KELLEY P L.Optimization of Q-switched lasers[J].IEEE J Q E,1991,27(9):2220～2225.
[9]	姚健铨.非线性光学频率变换及激光调谐技术[M].北京:科学出版社,1995.91～94.
[10]	克希耐尔 W.固体激光工程[M].北京:科学出版社,2002.534～536.
[11]	CRAXTON R S.Theory of high efficiency third harmonic generation of high power Nd-glass laser radiation[J].Opt Commun,1980,34:474～478.