Dynamics and stability improvement of DFB tapered master-oscillator power-amplifiers
V.Z. Tronciu1, M. Lichtner2, M. Radziunas2, U. Bandelow2, H. Wenzel3
Published in:
6th Int. Conf. on Microelectronics and Computer Science , Chisinau, Republic of Moldova, Oct. 1-3, pp. 15-18 (2009).
Abstract:
We consider theoretically the lasing properties of distributed-feedback master-oscillator poweramplifiers 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 for increasing current injections of the power amplifier. We show that a proper choice of the coupling coefficient of the Bragg grating allows to optimize the laser operation, so that the laser emits a high intensity continuous wave beam without previously observed mode jumps or dynamic instabilities when injection currents are tuned.
1 Technical University of Moldova, Stefan cel Mare 168, Chisinau. Republic of Moldova
2 Weierstrass Institute for Applied Analysis and Stochastics, Mohrenstr. 39, 10117 Berlin, Germany
3 Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Strasse 4, 12489 Berlin, Germany
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