Open AccessMode-locked InGaAs-AlGaAs disk laser generating sub-200-fs pulses, pulse picking and amplification by a tapered diode amplifier
Author(s) -
Peter Klopp,
Uwe Griebner,
M. Zorn,
A. Klehr,
A. Liero,
Markus Weyers,
G. Erbert
Publication year - 2009
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.17.010820
Subject(s) - optics , laser , chirp , materials science , mode locking , amplifier , optoelectronics , semiconductor laser theory , diode , pulse duration , pulse (music) , bandwidth limited pulse , ultrashort pulse , physics , cmos , detector
Almost chirp-free pulses with a duration of 190 fs were achieved from a mode-locked semiconductor disk laser (SDL) emitting at approximately 1045 nm. Pulse shaping was different from the soliton-like mode-locking process known from lasers using dielectric gain media; passive amplitude modulation provided by a fast saturable absorber was essential. The spectrum of the absorber had to be matched to the gain spectrum within a few nm. A tapered diode amplifier was demonstrated to be a device for both picking and amplifying SDL pulses. The pulse repetition rate of the SDL output was reduced from 3 GHz to 47 MHz.