Title :
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
fDate :
4/1/2004 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.824952
