title: Generation of vacuum-ultraviolet light by an optically contacted, prism-coupled KBe2BO3F2 crystal.
abstract: We have demonstrated the second harmonic of a frequency-tripled Nd:YVO4 laser with 2.5-mW quasi-cw output by using an optically contacted, prism-coupled KBe2BO3F2 crystal. We also achieved the second harmonic with a frequency-doubled single-mode Ti:sapphire laser at 172.5 nm and sum-frequency mixing with a dual-wavelength Ti:sapphire laser at 163.3 nm. These wavelengths are to our knowledge the shortest obtained by use of nonlinear crystals for second-harmonic generation and sum-frequency mixing, respectively.
authors.affiliation: Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8581, Japan. tadashit@spring8.or.jp
authors.forename: Tadashi
authors.initials: T
authors.lastname: Togashi
authors.forename: Teruto
authors.initials: T
authors.lastname: Kanai
authors.forename: Taro
authors.initials: T
authors.lastname: Sekikawa
authors.forename: Shuntaro
authors.initials: S
authors.lastname: Watanabe
authors.forename: Chuangtian
authors.initials: C
authors.lastname: Chen
authors.forename: Chengqian
authors.initials: C
authors.lastname: Zhang
authors.forename: Zuyan
authors.initials: Z
authors.lastname: Xu
authors.forename: Jiyang
authors.initials: J
authors.lastname: Wang