| Autor: |
Hiroo Yonezu, T. Furuse, T. Torikai, Kenji Endo, Tonao Yuasa, T. Kamejima |
| Rok vydání: |
1979 |
| Předmět: |
|
| Zdroj: |
Journal of Applied Physics. 50:5150 |
| ISSN: |
0021-8979 |
| DOI: |
10.1063/1.326650 |
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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