Longitudinal mode behavior and tunability of separately pumped (GaAl)As lasers
Abstract
A three-segment laser, when separately pumped, shows both frequency switching and continuous tuning with a modulation current applied to the middle segment. The wavelength changes are attributed to gain peak shift with the carrier concentration and carrier-induced index change. A total wavelength change of 61 A, a continuous tuning range of 4.1 A, and a tuning rate of -0.74 A/mA are obtained. The laser may be useful in optical FM fiber communication.
- Publication:
-
Applied Physics Letters
- Pub Date:
- January 1984
- Bibcode:
- 1984ApPhL..44...13W
- Keywords:
-
- Frequency Modulation;
- Gallium Arsenide Lasers;
- Injection Lasers;
- Laser Modes;
- Optical Communication;
- Tunable Lasers;
- Aluminum Gallium Arsenides;
- Carrier Density (Solid State);
- Current Density;
- Longitudinal Waves;
- Power Gain;
- Pumping;
- Switching;
- Lasers and Masers