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The Influence of a Residual Reflectivity at the Front Facet of a Multisection Master-Oscillator Power-Amplifier

E. Grigoriev1, V. Tronciu1, N. Werner2, H. Wenzel2

Published in:

J. Eng. Sci., vol. XXIX, no. 2, pp. 62-67, doi:10.52326/jes.utm.2022.29(2).06 (2022).


This paper reports on the theoretical end experimental investigation of the output characteristics of a multisection master-oscillator power-amplifier (MOPA). It consists of a master oscillator (MO) composed by a gain section surrounded by two DBR sections monolithically integrated with a power amplifier (PA). We use a traveling wave equation model to calculate the optical output power in dependence on the current injected into the PA. The experimental results can be well explained with our theoretical analysis. For a finite front facet reflectivity of the PA the system is acting as a compound cavity.

1 Technical University of Moldova, 168 Stefan cel Mare Blvd., Republic of Moldova
2 Ferdinand-Braun-Institut, Gustav-Kirchhoff-Straße 4, 12489 Berlin, Germany


distributed Bragg reflector laser, DBR, master oscillator power amplifier, MOPA, feedback.

Copyright © 2022 The Authors.
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