Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers
- Tronciu, Vasile Z.
- Lichtner, Mark
- Radziunas, Mindaugas
- Bandelow, Uwe
- Wenzel, Hans
2010 Mathematics Subject Classification
- 35Q60 35B30
2008 Physics and Astronomy Classification Scheme
- 42.55.Px, 42.60.Pk, 42.60.Mi
- high power lasers, DFB MOPA, coupling coefficient, continuous wave
We report theoretical results on the wavelength stabilization in distributed-feedback master-oscillator power-amplifiers which are compact semiconductor laser devices capable of emitting a high brilliance beam at an optical power of several Watts. Based on a traveling wave equation model we calculate emitted optical power and spectral maps in dependence on the pump of the power amplifier. We show that a proper choice of the Bragg grating type and coupling coefficient allows to optimize the laser operation, such that for a wide range of injection currents the laser emits a high intensity continuous wave beam.
- Opt. Quantum Electron., 41 (2010) pp. 531--537.