Femtosecond semiconductor laser system with resonator-internal dispersion adaptation

R.H. Pilny1, B. Döpke1, J.C. Balzer1,2, C. Brenner1, A. Klehr3, A. Knigge3, G. Tränkle3, and M. R. Hofmann1

Published in:

Opt. Lett., vol. 42, no. 8, pp. 1524-1527 (2017).

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.

Abstract:

We present a femtosecond laser diode system that is capable of autonomously adjusting itself to compensate for the external dispersion in an arbitrary application. The laser system contains a spatial light modulator inside the cavity which is controlled by an evolutionary algorithm in order to allow for phase and amplitude shaping of the laser emission. The cavity-internal dispersion control is shown to be much more efficient than an external control with a pulse shaper.

1 Photonics and Terahertz Technology, Ruhr-Universität Bochum, Universitätsstr. 150, D-44801 Bochum, Germany
2 Physics Department, Phillips University Marburg, Renthof 5, D-35032 Marburg, Germany
3 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik im Forschungsverband Berlin e.V., D-12489 Berlin, Germany

OCIS codes:

(140.2020) Diode lasers; (140.4050) Mode-locked lasers; (140.7090) Ultrafast lasers.