We have studied experimentally spectral characteristics of a multi-mode vertical-cavity surface-emitting laser that is subject to optical feedback. Appropriate alignment of the feedback mirror can suppress higher-order modes and significantly decrease the spectral linewidth of the laser.
Mode-Stabilized Operation in a Microlens-Integrated 980 nm Vertical-Cavity Surface-Emitting Laser
โ Scribed by Si-Hyun Park; Sangyeon Lee; Heonsu Jeon
- Publisher
- Optical Society of Japan
- Year
- 2006
- Tongue
- English
- Weight
- 115 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1340-6000
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Effect of the alignment of optical feedback on a multi-transverse-mode vertical-cavity surface-emitting laser is investigated experimentally. Enhancement of the fundamental mode or higher-order mode is achieved by adjusting the alignment of the feedback mirror. When the strength of feedback is stron
## Abstract Modern smallโsize verticalโcavity surfaceโemitting diode lasers (VCSELs) require principally fully vectorial optical modelling because their cavity sizes are of the order of the wavelength of emitted radiation. However, much simpler scalar approaches are often surprisingly exact even be