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High Average Power Second-harmonic Generation of a CW Erbium Fiber MOPA

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Title: High Average Power Second-harmonic Generation of a CW Erbium Fiber MOPA
Authors: Runcorn, TH
Murray, RT
Taylor, JR
Item Type: Journal Article
Abstract: We report the generation of 28 W of 780 nm radiation with near diffraction limited beam quality (M²≤1.15) by frequency-doubling a continuous-wave (CW) erbium fiber master oscillator power amplifier (MOPA) system in a periodically poled lithium niobate crystal. The second-harmonic generation conversion efficiency reached 45% with no roll-off observed, suggesting that further power scaling should be possible with higher fundamental pump powers. The generated second-harmonic had a 3 dB spectral bandwidth of 0.10 nm. The presented architecture represents a simple and effective route to generating high-brightness radiation around 780 nm.
Issue Date: 9-Aug-2017
Date of Acceptance: 31-Jul-2017
URI: http://hdl.handle.net/10044/1/50311
DOI: https://dx.doi.org/10.1109/LPT.2017.2737227
ISSN: 1041-1135
Publisher: Institute of Electrical and Electronics Engineers
Start Page: 1576
End Page: 1579
Journal / Book Title: IEEE Photonics Technology Letters
Volume: 29
Issue: 18
Copyright Statement: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/
Sponsor/Funder: Engineering & Physical Science Research Council (E
Engineering & Physical Science Research Council (EPSRC)
US Air Force
Funder's Grant Number: EP/K503733/1
Keywords: 0205 Optical Physics
0906 Electrical And Electronic Engineering
Optoelectronics & Photonics
Publication Status: Published
Appears in Collections:Physics
Faculty of Natural Sciences