## It is shown that for large optical modulation depth and relatively large optical feedback, numerically calculated distortion in directly modulated semiconductor lasers is in better agreement with experimental results than small-signal analytical results.
Optical Feedback and the Coupling Problem in Semiconductor Microdisk Lasers
✍ Scribed by N�ckel, J.U.
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 105 KB
- Volume
- 188
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
The smaller the size of a light-emitting microcavity, the more important it becomes to understand the effects of the cavity boundary on the optical mode profile. Conventional methods of laser physics, such as the paraxial approximation, become inapplicable in many of the more exotic cavity designs to be discussed here. Cavities in the shape of microdisks, pillars and rings can yield low lasing thresholds in a wide variety of gain media: quantum wells, wires and even dots, as well as quantum cascade superlattices and GaN. An overview of the experimental and theoretical status is provided, with special emphasis on the light extraction problem.
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