Temperature dependent gain characteristics in GaN-based vertical-cavity surface-emitting lasers
| Autor: | Tien-Chang Lu, Bo Siao Cheng, Mei Chung Liu |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Amplified spontaneous emission
Materials science Differential gain business.industry Temperature Reproducibility of Results Gallium Equipment Design Injection seeder Laser Sensitivity and Specificity Atomic and Molecular Physics and Optics Semiconductor laser theory law.invention Equipment Failure Analysis Laser linewidth Optics law Optoelectronics Computer-Aided Design Lasers Semiconductor business Lasing threshold Tunable laser |
| Zdroj: | Optics express. 17(22) |
| ISSN: | 1094-4087 |
| Popis: | Temperature dependent gain characteristics and linewidth enhancement factor (alpha-factor) of vertical-cavity surface-emitting lasers with InGaN/GaN multiple quantum wells were studied by measuring the photoluminescence spectra below the threshold condition and analyzed by using the Hakki-Paoli method. The optical gain and differential gain showed a more rapid increase as a function of the injected carriers as temperature decreased. The alpha-factor for the lasing mode was estimated as 2.8 at room temperature and decreased to a value as low as 0.6 at 80 K. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|