1. Research
  2. Publications
  3. Extended 9.7  nm tuning range ...


Find scientific contributions

to conferences also on our events page.

Extended 9.7  nm tuning range in a MOPA system with a tunable dual grating Y-branch laser

M. Tawfieq, A. Müller, J. Fricke, P. Della Casa, P. Ressel, D. Feise, B. Sumpf, and G. Tränkle

Published in:

Opt. Lett., vol. 42, no. 20, pp. 4227-4230 (2017).


In this Letter, we present a tunable Y-branch hybrid master oscillator power amplifier (MOPA) with 5.5 W output power, emitting between 973.7 and 983.4 nm. The MO is a monolithic Y-branch distributed Bragg reflector (DBR) diode laser, which is collimated and coupled into a tapered amplifier using cylindrical microlenses in a compact 25 mm×25 mm conduction cooled laser package. The wavelength spacing between the two laser branches is 2.2 nm. Each branch can be electrically tuned by up to 7.5 nm of quasi-continuous wavelength tuning, which in combination covers up to 9.7 nm of spectral range. Over this range, an output power variation of 0.5% and 0.2% is observed for the left and right arms, respectively, while maintaining a spectral width of less than 17 pm. In addition, the MOPA system can be operated as a dual-wavelength system by operating both branches simultaneously. The presented device is suitable for nonlinear frequency conversion applications.

Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Gustav-Kirchhoff-Str. 4, 12489 Berlin, Germany

OCIS codes:

(140.3490) Lasers, distributed-feedback; (250.5980) Semiconductor optical amplifiers; (140.3600) Lasers, tunable; (130.3990) Micro-optical devices.

Copyright © 2017 Optical Society of America. 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 Optical Society of America.

Full version in pdf-format.