Spatial ``rocking'' for improving the spatial quality of the beam of broad area semiconductor lasers
- Radziunas, Mindaugas
- Staliunas, Kestutis
2010 Mathematics Subject Classification
- 78A60 35B36 37M05 78A45
2008 Physics and Astronomy Classification Scheme
- 42.55.Px 42.65.Pc 42.60.Jf
- broad area semiconductor laser, traveling wave model, off-axis optical injection, stabilization, focusing, rocking
The spatial ``rocking'' is a dynamical effect converting a phase-invariant oscillatory system into a phase-bistable one, where the average phase of the system locks to one of two values differing by $pi$. We demonstrate theoretically the spatial rocking in experimentally accessible and practically relevant systems -- the broad area semiconductor lasers. By numerical integration of the laser model equations we show the phase bistability of the optical fields and explore the bistability area in parameter space. We also predict the spatial patterns, such as phase domain walls and phase solitons, which are characteristic for the phase-bistable spatially extended pattern forming systems.
- Semiconductor Lasers and Laser Dynamics V, K. Panajotov, M. Sciamanna, A.A. Valle, R. Michalzik, eds., vol. 8432 of Proceedings of SPIE, SPIE, 2012, pp. 84320Q/1--84320Q/9.