クボタ　ヒロカズ   Hirokazu Kubota   久保田　寛和    所属   追手門学院大学  理工学部 電気電子工学科    職種   教授
言語種別	英語
発行・発表の年月	1993/04/15
形態種別	論文
査読	査読あり
標題	Self-Q-switching and mode locking in a 1.53-μm fiber ring laser with saturable absorption in erbium-doped fiber at 4.2 K
執筆形態	共著・編著（代表編著を除く）
掲載誌名	Optics Letters
巻・号・頁	18(8),pp.613-615
著者・共著者	Masataka Nakazawa,Kazunori Suzuki,Hirokazu Kubota,Yasuo Kimura
概要	Self-Q-switching and mode locking have been observed for the first time to our knowledge in a 1.53-μm erbium-doped fiber ring laser that has an erbium-doped fiber cooled to 4.2 K as a saturable absorber. The repetition period of the self-Q-switching was 77 μs (13 kHz), which was determined by a gain recovery time of the laser. Cw mode locking was also observed when the pump power was increased to 150 mW. The Q-switching pulse width was approximately 3.3 μs, and the shortest mode-locked width was approximately 20–30 ns.
DOI	10.1364/OL.18.000613
ISSN	1539-4794