Open AccessOptical parametric amplification pumped by a phase-aberrated beam
Author(s) -
Xin Wei,
Liejia Qian,
Peng Yuan,
Heyuan Zhu,
Dianyuan Fan
Publication year - 2008
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.008904
Subject(s) - signal beam , optics , chirped pulse amplification , beam (structure) , signal (programming language) , phase (matter) , laser beam quality , parametric statistics , physics , optical parametric amplifier , regenerative amplification , phase conjugation , optical amplifier , laser , laser beams , ultrashort pulse , computer science , statistics , mathematics , quantum mechanics , programming language
In this paper we theoretically study the spatial characteristics of optical parametric amplification (OPA) or chirped pulse OPA (OPCPA) pumped with a phase-aberrated beam. Due to the fact that pump-to-signal phase transfer caused by walk-off effect is highly gain-dependent, in a high gain OPA system the signal beam-quality will be significantly degraded even for a weak walk-off, accompanied with beam tilting and converging or diverging. It is demonstrated that an OPA configuration with walkoff-compensated crystal pair is capable of reducing the phase transfer and hence ensuring signal beam-quality, which may be of importance for designing high-energy OPCPA systems.