Optimization of femtosecond Yb-doped fiber amplifiers for high-quality pulse compression

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-...

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Bibliographic Details
Published in:Optics express 2012-12, Vol.20 (27), p.28672-28682
Main Authors: Chen, Hung-Wen, Lim, JinKang, Huang, Shu-Wei, Schimpf, Damian N, Kärtner, Franz X, Chang, Guoqing
Format: Article
Language:English
Subjects:
Amplifiers, Electronic
Computer-Aided Design
Data Compression
Equipment Design
Equipment Failure Analysis
Fiber Optic Technology - instrumentation
Lasers
Signal Processing, Computer-Assisted - instrumentation
Ytterbium - chemistry
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.028672