誘電体多層膜ミラーへのグラフェン可飽和吸収体転写技術改善による可視光パルスファイバレーザー発振特性の向上

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2016/11/01

タイトル(英語): Visible Pulse Fiber Laser Oscillation Properties Enhanced by Improved Transcription Method of Graphene Saturable Absorber Mirror

著者名: 梶川　翔太（近畿大学大学院総合理工学研究科），寺尾　季倫（近畿大学大学院総合理工学研究科），吉田　実（近畿大学大学院総合理工学研究科），藤本　靖（大阪大学レーザーエネルギー学研究センター）

著者名(英語): Shota Kajikawa (Interdisciplinary Graduate Faculty of Science and Engineering, Kinki University), Tokinori Terao (Interdisciplinary Graduate Faculty of Science and Engineering, Kinki University), Minoru Yoshida (Interdisciplinary Graduate Faculty of Science and Engineering, Kinki University), Yasushi Fujimoto (Institute of Laser Engineering, Osaka University)

キーワード: 可視域ファイバレーザー，Qスイッチパルス，グラフェン，可飽和吸収体　　Visible fiber laser，Q-switched pulse，Grapnehe，Saturable absorber

要約(英語): Improved transcription method of graphene saturable absorber mirror (GSAM) is tested to enhance visible pulse fiber laser oscillation properties. When a graphene thin film on a dielectric multi-layered mirror is soaked in nitric acid solution for washing process, the mirror suffers from a deterioration of transmission spectrum, or a detachment of dielectric multilayer from a mirror substrate. New method is the way that a dielectric multi-layered mirror is not washed in nitric acid directly and the transcribed graphene on a silica glass sheet is just put on a dielectric multi-layered mirror with opponent situation. Visible pulse laser oscillation in a Pr-doped double-clad structured waterproof fluoride glass fiber was tested with two types of GSAM whose dielectric multilayered parts are directly (GSAM-I) or not directly (GSAM-II) washed in nitric acid solution. The maximum output average power with GSAM-II was measured to be 9.52 mW at 644 mW GaN-LD excitation, on the other hand, 2.63 mW for GSAM-I and the slope efficiency of GSAM-II one was also improved as four times as GSAM-I one. Therefore, it is considered that the new washing process of transcribed graphene is effective for keeping the mirror properties and enhancement of the laser properties.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.136 No.11 （2016） 特集：電気関係学会関西連合大会

本誌掲載ページ: 1506-1510 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/136/11/136_1506/_article/-char/ja/