A 980-nm Yb-doped fiber MOPA source and its frequency doubling

Author

Soh, D.B.S. ; Codemard, C. ; Wang, S. ; Nilsson, J. ; Sahu, J.K. ; Laurell, F. ; Philippov, V. ; Jeong, Y. ; Alegria, C. ; Baek, S.

Author_Institution

Optoelectronics Res. Centre, Univ. of Southampton, UK

Volume

16

Issue

4

fYear

2004

fDate

4/1/2004 12:00:00 AM

Firstpage

1032

Lastpage

1034

Abstract

A continuous-wave (CW) master oscillator-power amplifier (MOPA) fiber source, tunable around 978 nm, was frequency-doubled to 488.7 nm. Both the laser and the amplifier were made with cladding-pumped jacketed air-clad Yb-doped fibers. The MOPA generated up to 2.7 W of power in an output beam with an M² value of 1.8. This was frequency-doubled in a periodically poled potassium titanyl phosphate crystal at room temperature, in a single-pass configuration. The generated blue light had a CW power of 18.1 mW, a nearly Gaussian spatial intensity profile, and an M² value of 1.7.

Keywords

laser beams; laser tuning; optical fabrication; optical fibre amplifiers; optical fibre cladding; optical harmonic generation; optical materials; optical pumping; potassium compounds; ytterbium; 18.1 mW; 2.7 W; 20 degC; 488.7 nm; 980 nm; KTP; KTiOPO4; Yb-doped fiber MOPA source; cladding-pumped jacketed air-clad Yb-doped fibers; continuous-wave master oscillator-power amplifier fiber source; fiber laser; frequency doubling; frequency-doubling; nearly Gaussian spatial intensity profile; periodically poled potassium titanyl phosphate crystal; room temperature; single-pass configuration; Biomedical optical imaging; Diodes; Fiber lasers; Frequency; Optical fiber amplifiers; Optical fiber polarization; Optical harmonic generation; Optical pumping; Power generation; Tunable circuits and devices;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.824952

Filename

1281861