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).

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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.