Realisation of a widely tuneable sampled grating DBR laser emitting around 970 nm

O. Brox, M. Tawfieq, P. Della Casa, P. Ressel, B. Sumpf, G. Erbert, A. Knigge, M. Weyers and H. Wenzel

Published in:

Electron. Lett., vol. 53, no. 11, pp. 744-746 (2017).

Copyright © The Institution of Engineering and Technology 2017. 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 The Institution of Engineering and Technology.

Abstract:

Design and fabrication of a monolithic, single aperture widely tuneable diode laser emitting around 970 nm is presented. Overgrown sampled grating Bragg reflectors are applied to setup wavelength selective mirrors. Wavelength tuning is achieved via the Vernier effect with thermal heaters placed on top of the sampled gratings. The 20 nm quasi-continuous tuning around 970 nm with an optical side mode suppression ratio in excess of 40 dB is demonstrated and an optical output power of more than 30 mW at a pump current of 180 mA is presented.

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