Optical-field-induced-ionization Ar[sub]2[/sub][sup]*[/sup] excimer amplifier for intense femtosecond vacuum ultraviolet pulse generation

Masanori Kaku; Masahito Katto; Shoichi Kubodera

doi:10.1117/12.840573

17 February 2010 Optical-field-induced-ionization Ar₂^* excimer amplifier for intense femtosecond vacuum ultraviolet pulse generation

Masanori Kaku, Masahito Katto, Shoichi Kubodera

Author Affiliations +

Proceedings Volume 7581, High Energy/Average Power Lasers and Intense Beam Applications IV; 75810A (2010) https://doi.org/10.1117/12.840573
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

We report the optical amplification characteristics of an optical-field-induced-ionization (OFI) Ar₂ ^* excimer vacuum ultraviolet (VUV) amplifier at 126 nm by using two experimental approaches. We have observed the amplification of OFI Ar₂ ^* excimer emission and evaluated the gain length product of 1.0 by using an optical cavity. We also achieved the gain length product of 5.0 by measuring the one pass amplification inside a hollow fiber with the length of 5 cm. The use of a hollow fiber was effective to guide the VUV emission and to extend a gain length. A small signal gain coefficient of 1.0 cm^-1 was evaluated in both experimental approaches.

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Masanori Kaku, Masahito Katto, and Shoichi Kubodera "Optical-field-induced-ionization Ar₂^* excimer amplifier for intense femtosecond vacuum ultraviolet pulse generation", Proc. SPIE 7581, High Energy/Average Power Lasers and Intense Beam Applications IV, 75810A (17 February 2010); https://doi.org/10.1117/12.840573

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