Open AccessOptimization of femtosecond Yb-doped fiber amplifiers for high-quality pulse compression
Author(s) -
Hung−Wen Chen,
Jinkang Lim,
ShuWei Huang,
Damian N. Schimpf,
Franz X. Kärtner,
Guoqing Chang
Publication year - 2012
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.20.028672
Subject(s) - optics , femtosecond , materials science , chirp , pulse compression , amplifier , femtosecond pulse shaping , self phase modulation , pulse (music) , pulse duration , ultrashort pulse , nonlinear optics , optoelectronics , physics , laser , telecommunications , computer science , radar , cmos , detector
We both theoretically and experimentally investigate the optimization of femtosecond Yb-doped fiber amplifiers (YDFAs) to achieve high-quality, high-power, compressed pulses. Ultrashort pulses amplified inside YDFAs are modeled by the generalized nonlinear Schrödinger equation coupled to the steady-state propagation-rate equations. We use this model to study the dependence of compressed-pulse quality on the YDFA parameters, such as the gain fiber's doping concentration and length, and input pulse pre-chirp, duration, and power. The modeling results confirmed by experiments show that an optimum negative pre-chirp for the input pulse exists to achieve the best compression.