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Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon
Li Qifeng,Wang Hua,Shi Yong,Dai Jinghua,Liu Shilin*,Yu Shuqin,Ma Xingxiao
Author NameAffiliationE-mail
Li Qifeng Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon  
Wang Hua Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon  
Shi Yong Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon  
Dai Jinghua Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon  
Liu Shilin* Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon slliu@ustc.edu.cn 
Yu Shuqin Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon  
Ma Xingxiao Characteristic Study on VUV Laser Generated by Two-Photon Resonant Four Wave Mixing in Xenon  
Abstract:
The character of tunable Vacuum-Ultraviolet(VUV)laser generated by two-photon resonant four wave difference frequency mixing in Xenon was studied. The intense VUV laser was generated in the wavelength range of 151-171 nm using 6P[1/2,0]level of Xe atom as the two-photon resonant state. The pulse intensity of VUV laser was estimated to be 0.2 μJ,and the conversion efficiency relative to the wavelength-fixed laser was determined to be 0.1%. The line width of VUV laser was found to be 0.3 cm-1 from the laser-induced fluorescence spectrum of A-X(0,0)rotational line profiles of jet-cooled CO,which was much broader than those of the two employed dye lasers(0. 1 cm-1),mainly due to the saturation broadening of Xe level by intense laser field. The dependencies of VUV intensity on Xe pressure and two dye laser intensities were also investigated in this experiment.
Key words:  VUV,Two-photon resonant four wave mixing,Xe
FundProject:
双光子共振四波差频产生的真空紫外激光特性研究
李奇峰,汪华,石勇,戴静华,刘世林*,俞书勤,马兴孝
摘要:
介绍以惰性气体Xe为非线性介质、利用双光子共振四波混频差频方法产生的可调谐真空紫外激光(VUV)的特性研究. 实验中,传播方向和空间均相互重合的两束脉冲染料激光经透镜聚焦于Xe气混频池内,其中一束激光的波长(249. 626 nm)对应于Xe原子6P[1 / 2,0]00 5P的双光子共振跃迁,通过调谐另一束激光的波长,产生在151~171 nm可连续调谐的VUV激光. 经估算,产生的VUV 激光的强度约为每脉冲约0.2 μJ,转换效率约为0.1%. 通过测量超声射流冷却下CO分子的A 1Π0X 1Σ+(
关键词:  真空紫外激光  四波混频  Xe气
DOI:10.1088/1674-0068/17/3/333-338
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