パルスファイバレーザーの高出力化を目的とした光路長の自動制御

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: 2019/01/01

タイトル(英語): Automatic Control of Optical Path Length for Improving Power of Pulse Fiber Lasers

著者名: 天野　亮（近畿大学理工学部），吉田　実（近畿大学理工学部）

著者名(英語): Ryo Amano (Faculty of Science and Engineering, Kindai University), Minoru Yoshida (Faculty of Science and Engineering, Kindai University)

キーワード: 光路長制御，位相加算，ファイバレーザー　　optical path length control，coherent beam combining，fiber laser

要約(英語): Pulse fiber lasers have high beam quality and stability and are being used as industrial lasers. In recent years, pulse fiber lasers with higher power have been required for processing of difficult-to-cut materials and high speed processing. Accordingly, as one of methods for improving power of pulse fiber lasers, various systems based on coherent beam combining have been proposed. It is necessary for coherent beam combining that the optical phase and polarizations of individual beams to be combined are kept the same. Therefore, some system for adjusting them is needed.In this paper, we propose a method for adjusting the optical phase of beams to be combined, by optical path length control in an all fiber coherent beam combining system which was developed through our past work. This system is one such that the optical phase and polarizations are kept the same by controlling only the optical phase because polarization changes are automatically compensated. We also confirm effectiveness of our method for controlling the optical phase through computer simulation.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.139 No.1 （2019） 特集：電子回路関連技術

本誌掲載ページ: 113-118 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/139/1/139_113/_article/-char/ja/