Open AccessA novel high-power semiconductor laser diode with large cavity for high efficiency coupling with the optical fibers
Author(s) -
YU Henry Hai-ying,
Bifeng Cui,
Yixin Chen,
Deshu Zou,
Lei Ying,
Shen Gunag-Di
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.3945
Subject(s) - materials science , lasing threshold , optoelectronics , diode , semiconductor laser theory , coupling (piping) , optical fiber , semiconductor , optics , laser , laser diode , optical power , power (physics) , physics , composite material , wavelength , quantum mechanics
A novel high-power semiconductor laser diode (LD) with very large cavity using multi-active -layer cascaded by tunnel-junction was developed. The window size of the LD was enlarged extremely and less than 20 degree of the lasing beam divergency was obtainedwhich benefits the coupling between the LD and the optical fiber. Many types of lensed fibers were used to test with the LD and the coupling efficiencies were increased over 30% compared with the conventional LD.