Title :
Improved catastrophic optical damage level from laser with nonabsorbing mirrors
Author :
Walker, C.L. ; Bryce, A.C. ; Marsh, J.H.
Author_Institution :
Dept. of Electron. & Electr. Eng., Glasgow Univ., UK
Abstract :
The authors demonstrate an improved catastrophic optical damage (COD) level from a ridge laser with nonabsorbing mirrors (NAMs) fabricated by quantum well intermixing. Under destructive testing conditions, the COD level of the NAM laser was improved by a factor of 2.6 compared to the standard laser, attributed to reduced absorption induced facet degradation. Verification of the degradation mechanism was confirmed by inspection and removal of damaged facets.
Keywords :
chemical interdiffusion; laser beam effects; laser mirrors; optical fabrication; quantum well lasers; GaAs-AlGaAs; catastrophic optical damage level; damaged facet removal; destructive testing conditions; inspection; nonabsorbing mirrors; quantum well intermixing; reduced absorption induced facet degradation; ridge laser; Absorption; Degradation; Laser modes; Mirrors; Optical feedback; Optical pumping; Photonic band gap; Power lasers; Quantum well lasers; Semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.802080
