Open AccessHigh power sub-ps pulse generation by compression of a frequency comb obtained by a nonlinear broadened two colored seed
Author(s) -
Marco Plötner,
Victor Bock,
Tim Schultze,
Franz Beier,
Sabu Thomas,
Ramona Eberhardt,
Andreas Tünnermann
Publication year - 2017
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.25.016476
Subject(s) - optics , frequency comb , amplifier , materials science , picosecond , pulse compression , laser linewidth , self phase modulation , fiber laser , dispersion (optics) , laser , nonlinear optics , optoelectronics , physics , telecommunications , radar , cmos , computer science
In this contribution we demonstrate the generation of a frequency comb with sub-picosecond pulses by seeding an amplifier with two narrow linewidth laser diodes separated by 50 GHz. The results are achieved in the normal dispersion regime with parameters where the forming of the comb is dominated by self-phase modulation. A numerical simulation is performed with different nonlinear interaction lengths, whereas the experimental realization is done in a high power Yb-doped fiber amplifier to generate the necessary nonlinearity. An output power of 750 W with compression to sub-picosecond pulse durations is shown. Further perspectives towards higher power levels and larger comb-line spacing are discussed.