Generation of quasi-cw deep ultraviolet light below 200 nm by an external cavity with a Brewster-input KBBF prism coupling device

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• 作者：Yun Zhang^a ; ^{zhang@ee.uec.ac.jp} ; Ryota Hoshi^a ; Daichi Yamaguchi^a ; Yoshiko Okada-Shudo^a ; Masayoshi Watanabe^a ; Masaharu Hyodo^b ; Yun Zhu^c ; Xiaoyang Wang^c ; Yong Zhu^c ; Guilin Wang^c ; Chuangtian Chen^c ; Teruto Kanai^d ; Shuntaro Watanabe^e
• 关键词：Second harmonic generation ; KBBF ; VUV light
• 刊名：Optics Communications
• 出版年：2013
• 出版时间：15 May, 2013
• 年：2013
• 卷：295
• 期：Complete
• 页码：176-179
• 全文大小：321 K

文摘

We report the generation of coherent deep ultraviolet light at 199 nm with a maximum average power of 32 mW by frequency quadrupling a picosecond pulse train from a Ti:sapphire laser. Two frequency-doubling stages were taking place in resonant cavities that can enhance conversion efficiency of second harmonic generations (SHGs). To reduce the extra-loss of the resonant cavity, a Brewster-input KBe₂BO₃F₂ (KBBF) prism coupling device (PCD) was designed and employed in the second stage SHG for the first time.