The impact of spectral modulations on the contrast of pulses of nonlinear chirped-pulse amplification systems

被引：59

作者：

Schimpf, Damian N. ^{[1
]}

Seise, Enrico ^{[1
]}

Limpert, Jens ^{[1
]}

Tuennermann, Andreas ^{[1
]}

机构：

[1] Univ Jena, Inst Appl Phys, D-07745 Jena, Germany

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 14期

关键词：

D O I：

10.1364/OE.16.010664

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A detrimental pulse distortion mechanism inherent to nonlinear chirped-pulse amplification systems is revealed and analyzed. When seeding the nonlinear amplification stage with pulses possessing weak side-pulses, the Kerr-nonlinearity causes a transfer of energy from the main pulse to side pulses. The resulting decrease in pulse contrast is determined by the accumulated nonlinear phase-shift (i.e., the B-integral) and the initial pulse-contrast. The energy transfer can be described by Bessel-functions. Thus, applications relying on a high pulse-contrast demand a low B-integral of the amplification system and a master-oscillator that exhibits an excellent pulse-contrast. In particular, nonlinear fiber CPA-systems operated at B-integrals far beyond p have to be revised in this context. (c) 2008 Optical Society of America.

引用

页码：10664 / 10674

页数：11

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