Abstract
We investigated the lasing modes of quasi-stadium laser diodes that have confocal cavity geometries, with stripe electrode contacts formed either along the cavity axis or a diamond-shaped trajectory. It was clearly demonstrated thatbyusing narrow electrode contact patternsof 2 μm width, the lowest-order axial and ring modes were excited selectively. On the other hand, the second-lowest-order axial and ring modes were excited by using broad electrode patterns of 14 μm width. Experimentally obtained far-field patterns for lasers with broad and narrow electrode contact patterns agree very well with the simulation results obtained using an extended Fox-Li mode calculation method.
| Original language | English |
|---|---|
| Pages (from-to) | 2515-2520 |
| Number of pages | 6 |
| Journal | Applied Optics |
| Volume | 51 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2012 May 10 |
| Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering
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Fukushima, T., Sunada, S., Harayama, T., Sakaguchi, K., & Tokuda, Y. (2012). Lowest-order axial and ring mode lasing in confocal quasi-stadium laser diodes. Applied Optics, 51(14), 2515-2520. https://doi.org/10.1364/AO.51.002515