Vacuum ultraviolet argon excimer laser at 126 nm excited by a high intensity laser

Masanori Kaku; Shinya Harano; Masahito Katto; Shoichi Kubodera

doi:10.1117/12.880749

15 November 2010 Vacuum ultraviolet argon excimer laser at 126 nm excited by a high intensity laser

Masanori Kaku, Shinya Harano, Masahito Katto, Shoichi Kubodera

Proceedings Volume 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 775113 (2010) https://doi.org/10.1117/12.880749
Event: 18th International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2010, Sofia, Bulgaria

Abstract

We have observed the optical amplification of the Ar₂^* excimer at 126 nm pumped by optical-field-induced ionization (OFI) caused by an infrared high-intensity laser. We have evaluated similar small signal gain coefficients of approximately 1.0 cm^-1 in two different experiments, where OFI Ar plasmas as gain media were produced in free space filled with Ar and inside an Ar-filled hollow fiber. This indicates that the function of a hollow fiber was to guide the infrared excitation laser and VUV Ar₂^* emissions, and not to regulate the OFI plasma. Despite the gain coefficient value at 126 nm, the laser oscillation has not been observed. This was limited by the optical quality of available state-of-the-art vacuum ultraviolet optics.

Citation Download Citation

Masanori Kaku, Shinya Harano, Masahito Katto, and Shoichi Kubodera "Vacuum ultraviolet argon excimer laser at 126 nm excited by a high intensity laser", Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 775113 (15 November 2010); https://doi.org/10.1117/12.880749

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