Curved Waveguides for Spatial Mode Filters in Semiconductor Lasers
| Autor: | R.B. Swint, M.S. Zediker, Victor C. Elarde, James J. Coleman, T.S. Yeoh |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Materials science
business.industry Slope efficiency Beam steering Mode (statistics) Physics::Optics Curvature Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Semiconductor laser theory Optics Filter (video) law Optoelectronics Electrical and Electronic Engineering business Waveguide Beam (structure) |
| Zdroj: | IEEE Photonics Technology Letters. 16:12-14 |
| ISSN: | 1041-1135 |
| DOI: | 10.1109/lpt.2003.818933 |
| Popis: | Curved waveguides are used as a lateral spatial mode filter to increase the threshold for the first-order mode in high-power narrow stripe semiconductor lasers. Beam propagation analysis is used to determine optimal waveguide geometries and radii of curvature to establish appropriate amounts of bend loss. Curved waveguide devices are fabricated and compared against conventional devices. Use of a curved waveguide increases the current level at which lateral beam instabilities occur from /spl sim/400 to /spl sim/700 mA with no decline in slope efficiency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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