Mirror degradation in AlGaAs double-heterostructure lasers

Journal Article · Wed Aug 01 04:00:00 EDT 1979 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.326650· OSTI ID:6191206

Yonezu, H; Endo, K; Kamejima, T; Torikai, T; Yuasa, T; Furuse, T

Degradation mechanism and the related change in lasing characteristics for a mirror degradation were investigated in AlGaAs double-heterostructure lasers with uncoated mirror surfaces. In constant optical-power operation, mirror degradation was classified into three phases. The lasing-characteristics degradation in the initial stage of phase I was well explained in the excitation-enhanced oxidation model. Dark-line defects, originating from mirror surfaces, were found in the final stage of phase III, following phase II with a low degradation rate. The mechanism of the optical-power dependence was also investigated. Marked improvement in operating life was confirmed by the dielectric film coating and in a new-structure laser with little excitation in the vicinity of mirror surfaces.

• Research Organization: Central Research Laboratories, Nippon Electric Co., Ltd., Miyazaki, Takatsu-ku, Kawasaki, Kanagawa, Japan
• OSTI ID: 6191206
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 50:8; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALUMINIUM ARSENIDES
ALUMINIUM COMPOUNDS
ARSENIC COMPOUNDS
ARSENIDES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
COATINGS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DECOMPOSITION
DIELECTRIC MATERIALS
ENERGY-LEVEL TRANSITIONS
EXCITATION
GALLIUM ARSENIDES
GALLIUM COMPOUNDS
LASERS
MATHEMATICAL MODELS
MIRRORS
OXIDATION
PNICTIDES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIOLYSIS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SURFACES