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Title: Analysis of Pump-Induced Temporal Contrast Degradation in Optical Parametric Chirped-Pulse Amplification

Abstract

The pump-induced degradation of the temporal contrast of laser pulses amplified by optical parametric chirped-pulse amplification (OPCPA) is studied analytically. In OPCPA systems, the temporal fluctuations of the pump pulse are coupled to the spectrum of the chirped signal by the instantaneous parametric gain and lead to a reduction in the temporal contrast of the recompressed amplified signal. The intensity and shape of the induced temporal pedestal depend on the pump fluctuations and the parametric amplifier operating regime. General equations describing the contrast degradation are derived and applied to the case of sinusoidal pump-intensity modulation and pump amplified spontaneous emission. The reduction of the contrast in the amplified pulse is quantified analytically and via simulations for an OPCPA system.

Authors:
Publication Date:
Research Org.:
Laboratory for Laser Energetics, University of Rochester
Sponsoring Org.:
USDOE
OSTI Identifier:
920689
Report Number(s):
DOE/Sf/19460-786
2007-88; 1755; TRN: US200805%%122
DOE Contract Number:  
FC52-92SF19460
Resource Type:
Journal Article
Journal Name:
Journal of the Optical Society of America B
Additional Journal Information:
Journal Volume: 24; Journal Issue: 12
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; FLUCTUATIONS; OPTICAL PUMPING; LASERS; MODULATION; PARAMETRIC AMPLIFIERS; SHAPE; EQUATIONS

Citation Formats

Dorrer, C. Analysis of Pump-Induced Temporal Contrast Degradation in Optical Parametric Chirped-Pulse Amplification. United States: N. p., 2007. Web. doi:10.1364/JOSAB.24.003048.
Dorrer, C. Analysis of Pump-Induced Temporal Contrast Degradation in Optical Parametric Chirped-Pulse Amplification. United States. doi:10.1364/JOSAB.24.003048.
Dorrer, C. Wed . "Analysis of Pump-Induced Temporal Contrast Degradation in Optical Parametric Chirped-Pulse Amplification". United States. doi:10.1364/JOSAB.24.003048.
@article{osti_920689,
title = {Analysis of Pump-Induced Temporal Contrast Degradation in Optical Parametric Chirped-Pulse Amplification},
author = {Dorrer, C},
abstractNote = {The pump-induced degradation of the temporal contrast of laser pulses amplified by optical parametric chirped-pulse amplification (OPCPA) is studied analytically. In OPCPA systems, the temporal fluctuations of the pump pulse are coupled to the spectrum of the chirped signal by the instantaneous parametric gain and lead to a reduction in the temporal contrast of the recompressed amplified signal. The intensity and shape of the induced temporal pedestal depend on the pump fluctuations and the parametric amplifier operating regime. General equations describing the contrast degradation are derived and applied to the case of sinusoidal pump-intensity modulation and pump amplified spontaneous emission. The reduction of the contrast in the amplified pulse is quantified analytically and via simulations for an OPCPA system.},
doi = {10.1364/JOSAB.24.003048},
journal = {Journal of the Optical Society of America B},
number = 12,
volume = 24,
place = {United States},
year = {2007},
month = {12}
}