Open AccessContinuous-wave fiber-pumped Cr2+:ZnSe laser
Author(s) -
Umıt Demırbas,
Alphan Sennaroğlu,
Nathalie Vermeulen,
Heidi Ottevaere,
Hugo Thienpont
Publication year - 2006
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.661725
Subject(s) - lasing threshold , laser , materials science , optics , fiber laser , continuous wave , thulium , optical pumping , output coupler , laser power scaling , laser pumping , optoelectronics , analytical chemistry (journal) , physics , chemistry , chromatography
Power performance of a compact, broadly tunable, continuous-wave (cw) Cr2+:ZnSe laser pumped by a thulium fiber laser at 1800 nm was investigated. In the lasing experiments, a Cr2+:ZnSe sample with a small-signal differential absorption coefficient of 11 cm(-1) and a fluorescence lifetime of 4.6 mu s was used. An astigmatically compensated x-cavity with 15% output coupler produced as high as 640 mW of output power at 2480 nm with 2.5 W of incident pump power. Resonator losses were investigated using three different methods, and an in-depth analysis of the results was performed. The stimulated emission cross section values determined from laser threshold data and fluorescence measurements were in good agreement with each other. Finally, broad, continuous tuning of the laser was demonstrated between 2240 and 2900 nm by using an intracavity Brewster-cut MgF2 prism and a single set of optics
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