Numerical study of spatiotemporal distortions in noncollinear optical parametric chirped-pulse amplifiers

被引：33

作者：

Giree, Achut ^{[1
,2
]}

Mero, Mark ^{[1
]}

Arisholm, Gunnar ^{[3
]}

Vrakking, Marc J. J. ^{[1
]}

Furch, Federico J. ^{[1
]}

机构：

[1] Max Born Inst, Max Born Str 2A, D-12489 Berlin, Germany

[2] Amplitude Technol, 2-4 Rue Bois Chaland CE 2926, F-91029 Evry, France

[3] Norwegian Def Res Estab FFI), POB 25, N-2027 Kjeller, Norway

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 04期

关键词：

FEW-CYCLE PULSES; AVERAGE-POWER; OPCPA SYSTEM; SPATIAL CHIRP; FS PULSES; 400; KHZ; 15; W; AMPLIFICATION; GENERATION; DISPERSION;

D O I：

10.1364/OE.25.003104

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

During amplification in a noncollinear optical parametric amplifier the spatial and temporal coordinates of the amplified field are inherently coupled. These couplings or distortions can limit the peak intensity, among other things. In this work, a numerical study of the spatiotemporal distortions in BBO-based noncollinear optical parametric chirped-pulse amplifiers (NOPCPAs) is presented for a wide range of parameters and for different amplification conditions. It is shown that for Gaussian pump beams, gain saturation introduces strong distortions and high conversion efficiency always comes at the price of strong spatiotemporal couplings which drastically reduce the peak intensity even when pulse fronts of the pump and the signal are matched. However, high conversion efficiencies with minimum spatiotemporal distortions can still be achieved with flat-top pump beam profiles. (C) 2017 Optical Society of America

引用

页码：3104 / 3121

页数：18

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