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WIAS Preprint No. 1444, (2009)

Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers



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2010 Mathematics Subject Classification

2008 Physics and Astronomy Classification Scheme

Keywords

Abstract

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.

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