High-power ytterbium-doped fibre master-oscillator power-amplifier at 1018 nm

Park, Hye-mi; Oh, Yejin; Park, Eunji; Park, Jongseon; Jeong, Hoon; Kim, Jiwon

doi:10.1088/1555-6611/ac46d1

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High-power ytterbium-doped fibre master-oscillator power-amplifier at 1018 nm

Park, Hye-mi;
Oh, Yejin;
Park, Eunji;
Park, Jongseon;
Jeong, Hoon;
... Kim, Jiwon

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2

초록

A high-power master-oscillator power-amplifier (MOPA) at 1018 nm employing ytterbium (Yb)-doped fibres as a gain medium is reported. Utilizing a diffraction grating as a reflector, we could successfully suppress the influence of the broadband amplified spontaneous emission on the master-oscillator or the power-amplifier, resulting in stable amplification of the laser signal at 1018 nm. Based on a simple theoretical simulation on gain spectra and experimental investigation on parasitic lasing thresholds, the Yb fibre MOPA constructed in-house yielded 220 W of output at 1018 nm with a beam propagation factor (M-2) of 1.1. The prospects for further power scaling are considered.

키워드

high-power lasers; master-oscillator power-amplifier; Yb fibre lasers; tandem pumping; OUTPUT POWER; LASER

제목: High-power ytterbium-doped fibre master-oscillator power-amplifier at 1018 nm

저자: Park, Hye-mi; Oh, Yejin; Park, Eunji; Park, Jongseon; Jeong, Hoon; Kim, Jiwon

DOI: 10.1088/1555-6611/ac46d1

발행일: 2022-02

유형: Article

저널명: Laser Physics

권: 32

호: 2

페이지: 1 ~ 6

언어: ENG

출판사: IOP Publishing Ltd

발행국가: 영국

분량: 6 페이지

ISSN: E 1555-6611
P 1054-660X