High power single-mode fiber laser and a multi-mode delivery cable

Kosuke Kashiwagi; Takashi Kayahara; Yoshihiro Emori; Akira Fujisaki

doi:10.1117/12.908256

15 February 2012 High power single-mode fiber laser and a multi-mode delivery cable

Kosuke Kashiwagi, Takashi Kayahara, Yoshihiro Emori, Akira Fujisaki

Proceedings Volume 8237, Fiber Lasers IX: Technology, Systems, and Applications; 823728 (2012) https://doi.org/10.1117/12.908256
Event: SPIE LASE, 2012, San Francisco, California, United States

Abstract

Over 500W output power Yb doped single-mode fiber laser demonstrates excellent beam quality of less than 1.1 M2 value. Use of single mode fiber as delivery cable enables small spot-size; however delivery length is limited by SRS in fiber. To mitigate this characteristic, use of multi-mode fiber for delivery is one of approach. We present our design of 500W single mode fiber laser and beam quality measurement of multi-mode delivery fiber. How they vary, how we can homogenize beam depend on different condition of connection style, etc. We also present material process results in different beam performance.

Citation Download Citation

Kosuke Kashiwagi, Takashi Kayahara, Yoshihiro Emori, and Akira Fujisaki "High power single-mode fiber laser and a multi-mode delivery cable", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 823728 (15 February 2012); https://doi.org/10.1117/12.908256

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