Phase-locking phenomena in coupled waveguide semiconductor lasers
Abstract
Under some simplifying assumptions, an inequality is derived which must be satisfied for a pair of index guided coupled waveguide semiconductor lasers to be phase-locked. The physically realistic situation of small technological differences between the devices is included. If this criterion is not met then, in the most severe case, the system operates in a scanning mode whereby the far-field pattern scans with a period of a few hundred picoseconds. If phase locking is only weakly broken a stable far-field pattern results, punctuated by periodic phase jumps of 2 pi.
- Publication:
-
IEE Proceedings J: Optoelectronics
- Pub Date:
- February 1992
- Bibcode:
- 1992IPOpt.139...88J
- Keywords:
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- Gradient Index Optics;
- Laser Arrays;
- Phase Locked Systems;
- Semiconductor Lasers;
- Waveguide Lasers;
- Far Fields;
- Optical Coupling;
- Lasers and Masers