Open AccessSelf-optimizing femtosecond semiconductor laser
Author(s) -
Benjamin Döpke,
Rouven H. Pilny,
Carsten Brenner,
A. Klehr,
G. Erbert,
G. Tränkle,
Jan C. Balzer,
Martin R. Hofmann
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.009710
Subject(s) - optics , semiconductor laser theory , laser , femtosecond , materials science , mode locking , bandwidth (computing) , semiconductor , optical amplifier , amplitude , optoelectronics , terahertz radiation , physics , telecommunications , computer science
A self-optimizing approach to intra-cavity spectral shaping of external cavity mode-locked semiconductor lasers using edge-emitting multi-section diodes is presented. An evolutionary algorithm generates spectrally resolved phase- and amplitude masks that lead to the utilization of a large part of the net gain spectrum for mode-locked operation. Using these masks as a spectral amplitude and phase filter, a bandwidth of the optical intensity spectrum of 3.7 THz is achieved and Fourier-limited pulses of 216 fs duration are generated after further external compression.