 |
Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers
V.Z. Tronciu1, M. Lichtner1, M. Radziunas1, U. Bandelow1, H. Wenzel2
1 Weierstrass Institute for Applied Analysis and Stochastics, Mohrenstr. 39, 10117 Berlin, Germany
2 Ferdinand-Braun-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Strasse 4, D-12489 Berlin, Germany
Published in:
Opt. Quant. Electron., online first (2010).
© Springer Science+Business Media, LLC. 2010. Personal use of this material is permitted. However, permission to reprint/republish this material for
advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists,
or to reuse any copyrighted component of this work in other works must be obtained from the Springer Science+Business Media, LLC.
Abstract:
We report theoretical results on the wavelength stabilization in distributedfeedback
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 travelling 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 optimization of the laser operation,
such that the laser emits a high intensity continuous wave beam for a wide range of injection
currents.
Keywords:
High power lasers, DFB MOPA, Coupling coefficient, Continuous wave
Full version in pdf-format.
|
|
