激光与光电子学进展, 2019, 56 (1): 011402, 网络出版: 2019-08-01  

宽谱脉冲HF激光在空气中的吸收衰减 下载: 1066次

Absorption Attenuation of Wide Spectrum Pulsed HF Laser in Air
作者单位
西北核技术研究所激光与物质相互作用国家重点实验室, 陕西 西安 710024
摘要
放电引发非链式脉冲HF激光器在全谱输出条件下典型的输出谱线约16条,谱线集中在2.65~3 μm波段,大气中H2O分子在2.7 μm附近的吸收带对HF激光能量衰减有较大影响。利用放电引发非链式脉冲HF激光器,获得了宽谱脉冲HF激光在空气中的吸收衰减规律。实验结果表明,全谱输出条件下脉冲HF激光在激光器出口处的吸收系数约为0.066 m -1,传输40 m后吸收系数降低到0.01 m -1附近。吸收系数随着传输距离的增加而减小,并趋于常数。通过对非链式脉冲HF激光2.8 μm以下输出光谱的抑制,在激光器出口处吸收系数减小到原来的1/3,约为0.022 m -1,一定程度上降低了空气吸收对激光能量的衰减。
Abstract
There are about 16 spectral lines emitted from discharge initiated non-chain pulsed HF laser, covering from 2.65 μm to 3 μm, when the laser is working in full spectrum output. The absorption of H2O molecules at about 2.7 μm in air has a great influence on the laser pulse energy. The absorption attenuation rules of wide spectral band pulsed HF laser in air are obtained by using discharge initiated non-chain pulsed HF laser. The experimental results show that the absorption coefficient is about 0.066 m -1 just at the output window of the laser device in full spectrum output, and then decreases to around 0.01 m -1 after 40 m propagation. The absorption attenuation coefficient reduces when the propagation distance increases, and tends to be constant. By suppressing the laser wavelength below 2.8 μm of non-chain pulsed HF laser, the attenuation coefficient is reduced to about 1/3 of the value obtained before at the output window, i.e., about 0.022 m -1, and the attenuation of laser energy by air absorption is reduced to some extent.

朱峰, 黄珂, 黄超, 李高鹏, 栾昆鹏, 沈炎龙. 宽谱脉冲HF激光在空气中的吸收衰减[J]. 激光与光电子学进展, 2019, 56(1): 011402. Feng Zhu, Ke Huang, Chao Huang, Gaopeng Li, Kunpeng Luan, Yanlong Shen. Absorption Attenuation of Wide Spectrum Pulsed HF Laser in Air[J]. Laser & Optoelectronics Progress, 2019, 56(1): 011402.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!