金属波导连续光泵气体太赫兹激光器实验研究
Received:March 18, 2016  Revised:May 05, 2016  点此下载全文
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Author NameAffiliationE-mail
Yan Qiang Research Center of Laser Fusion, Chinese Academy of Engineering Physics yanqiang668@126.com 
Kong Wei-Peng Research Center of Laser Fusion, Chinese Academy of Engineering Physics  
Wang Du Research Center of Laser Fusion, Chinese Academy of Engineering Physics wdxz@foxmail.com 
Qin Yu Research Center of Laser Fusion, Chinese Academy of Engineering Physics  
Luo Zhen-Fei Research Center of Laser Fusion, Chinese Academy of Engineering Physics  
Li Ze-Yu Research Center of Laser Fusion, Chinese Academy of Engineering Physics  
Li Lei Research Center of Laser Fusion, Chinese Academy of Engineering Physics  
Zhou Xun Research Center of Laser Fusion, Chinese Academy of Engineering Physics  
基金项目:中国工程物理研究院太赫兹科学技术研究中心项目TH2015-020508;中物院-四川大学协同创新基金XTCT2014010
中文摘要:针对紧凑型光泵气体太赫兹激光器(OPTL)技术,设计并研制了全金属波导结构的气体太赫兹(THz)激光器原理样机。THz激光器工作介质为CH3OH气体,最佳工作气压30 Pa,在波长9.69 μm、连续功率44 W的9P(36)支 CO2激光泵浦下,实验测得在2.52 THz频点输出功率150 mW,光子转换效率为8.4%。研究THz激光输出功率与CH3OH工作气压、泵浦光功率的关系、以及THz激光输出稳定性,并通过压电陶瓷对THz激光腔长进行精密调节,同时测量输出功率的变化情况,讨论了金属波导THz激光器的纵模特性。实验工作与结果为下一步紧凑型折叠波导腔全金属OPTL的研制提供了参考。
中文关键词:太赫兹  光泵气体THz激光器  高功率连续THz激光  金属波导
 
Experimental Study of Optically Pumped Metallic waveguide cw Terahertz Gas Laser
Abstract:A prototype of optically-pumped terahertz (THz) gas laser (OPTL) with metallic waveguide was designed and manufactured, in order to study the technology of compact OPTL. The output power of THz laser radiation is 150mW, pumping by a 44W, 9P36 (9.69 μm) cw CO2 laser. The THz laser medium is CH3OH vapour, and the pressure is 30 Pa. The photon conversion efficiency is 8.4%. The relationships of THz laser power versus working gas pressure and pump power are given. The stability of the output power in ten minutes is measured. The variation of THz laser power is measured by adjusting the length of the THz laser cavity precisely through a piezoelectric translator. The characteristics of the longitudinal modes in the metallic waveguide THz laser are discussed. The experimental work and results are helpful for further research on the compact folded all-metal waveguide OPTL.
keywords:terahertz  optically-pumped terahertz gas lasers  high power cw THz laser  metallic waveguide
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