• Media type: Text; E-Book; Report
  • Title: Improving the stability of distributed-feedback tapered master-oscillator power-amplifiers
  • Contributor: Tronciu, Vasile Z. [Author]; Lichtner, Mark [Author]; Radziunas, Mindaugas [Author]; Bandelow, Uwe [Author]; Wenzel, Hans [Author]
  • imprint: Weierstrass Institute for Applied Analysis and Stochastics publication server, 2009
  • Language: English
  • DOI: https://doi.org/10.20347/WIAS.PREPRINT.1444
  • Keywords: article ; 35B30 ; 42.55.Px ; 42.60.Pk ; 35Q60 ; high power lasers -- DFB MOPA -- coupling coefficient -- continuous wave ; 42.60.Mi
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  • Description: 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.