An intense radiation in mid-infrared of Xe

Shan He; Dong Liu; Jingwei Guo; Fengting Sang

doi:10.1117/12.2257042

13 January 2017 An intense radiation in mid-infrared of Xe

Shan He, Dong Liu, Jingwei Guo, Fengting Sang

Proceedings Volume 10254, XXI International Symposium on High Power Laser Systems and Applications 2016; 102540Z (2017) https://doi.org/10.1117/12.2257042
Event: XXI International Symposium on High Power Laser Systems and Applications, 2016, Gmunden, Austria

Abstract

Recently, the optically pumped rare gas lasers have been attracted extensive attention. Rare gas laser systems with Ne (2p⁵3p), Ar (3p⁵4p), and Kr (4p⁵5p) atoms have been investigated. However, there are sparse studies based on Xe. In this work, new phenomena, intensive mid-infrared amplified spontaneous emissions (ASEs), are found after two-photon excitation of Xe from the ground state to the 6p[1/2]₀ state. Simultaneously, substantial 6p[1/2]₁ atoms are populated. The thresholds of ASE peak 1 and the generation of 6p[1/2]₁ atoms are both about 1.5 mJ. It indicates that there should exist the relationship between these two phenomena. The ASE signals show broadband spectra. Therefore, it must be yielded by the superposition of Xe₂* excimer transitions. The mid-infrared ASEs lead to excimers correlating to the 6s’[1/2]₁ enormously generated. Then these excimers dissociate to produce substantial 6p[1/2]₁ atoms. Under some circumstance, the ratio of the 6p[1/2]₁ to 6p[1/2]₀ atoms reaches about 80%. It indicates that the 6p[1/2]₀ atoms strongly tend to decay through the emissions between the excimer states. Using these emissions, continuous-tunable mid-infrared laser with metastable Xe can be promisingly produced.

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Shan He, Dong Liu, Jingwei Guo, and Fengting Sang "An intense radiation in mid-infrared of Xe", Proc. SPIE 10254, XXI International Symposium on High Power Laser Systems and Applications 2016, 102540Z (13 January 2017); https://doi.org/10.1117/12.2257042

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KEYWORDS

Chemical species

Xenon

Excimers

Mid-IR

Laser systems engineering

Argon

Gas lasers

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