Abstract
The output light of a vertical-cavity surface-emitting laser (VCSEL) can exist in two linearly polarized modes along the 〈011〉 and the 〈011̄〉 crystal directions (denoted P∥ and P⊥ respectively). Under normal operation, one of the modes will dominate over the other and, depending on the injection current, switching between the two modes can occur. Efforts have been made to control the polarization by use of anisotropic transverse cavity geometry, stress from an elliptical window, asymmetrical active layers, and metal gratings as the bottom reflector. This paper reports the first demonstration of locking the polarization of VCSELs by putting a ultrathin amorphous silicon subwavelength transmission grating in front of the output window of a VCSEL.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 361-362 |
| Number of pages | 2 |
| Journal | Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS |
| State | Published - 1996 |
| Externally published | Yes |
| Event | Proceedings of the 1996 Conference on Lasers and Electro-Optics, CLEO'96 - Anaheim, CA, USA Duration: Jun 2 1996 → Jun 7 1996 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering