Title :
Impact of near-end residual reflectivity on the spectral performance of high-power pump lasers
Author :
Davis, Monica K. ; Kussmaul, Andreas ; Yang, Guowen ; Hu, Martin H. ; Liu, Xingsheng ; Zhu, Yuqing ; Loeber, David A S ; Zah, Chung-en
Author_Institution :
Corning Lasertron, Bedford, MA, USA
fDate :
4/1/2004 12:00:00 AM
Abstract :
Abnormal spectral characteristics are observed in high-power semiconductor pump laser modules with ultralow chip front-facet reflectivity levels. We have identified the root cause as destructive interference in an external-cavity reflection from an antireflection (AR) coated fiber tip. This suppressive external cavity imposes a practical limit on the lower desirable bound for front-facet AR coatings for high-power lasers and uncooled fiber Bragg grating stabilized semiconductor devices.
Keywords :
antireflection coatings; laser cavity resonators; laser feedback; optical pumping; reflectivity; semiconductor lasers; abnormal spectral characteristics; antireflection coated fiber tip; destructive interference; external-cavity reflection; front-facet AR coatings; high-power semiconductor pump lasers; near-end residual reflectivity; optical feedback; optical reflection; spectral performance; suppressive external cavity; ultralow chip front-facet reflectivity levels; uncooled fiber Bragg grating stabilized semiconductor devices; Coatings; Fiber lasers; Interference; Laser excitation; Laser stability; Optical fiber devices; Optical reflection; Pump lasers; Reflectivity; Semiconductor lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.825115
