Frequency shift of an intense laser pulse induced by plasma wave

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• 作者：N.C. Pathak^a ; ^b ; ^{naveen.pathak@df.unipi.it} ; G. Bussolino^a ; ^c ; C.A. Cecchetti^a ; ^c ; A. Giulietti^a ; ^c ; D. Giulietti^a ; ^b ; ^c ; P. Kö ; ster^a ; ^c ; T. Levato^a ; ^c ; L. Labate^a ; ^c ; L.A. Gizzi^a ; ^c
• 关键词：Laser plasma interaction ; Wakefield ; Thomson scattering ; Spectrum modification
• 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
• 出版年：2012
• 期刊代码：41_01689002
• 类别：ph
• 出版时间：11 July, 2012
• 卷：680
• 期：Complete
• 页码：103-107
• 文件大小：485 K

摘要

Spectral modification of an intense laser pulse propagating in a helium gas target was studied using Thomson scattering diagnostic. The spectra recorded at 90掳 to the laser propagation and polarization direction show a significant modulation and modification of the incident laser pulse during its interaction and propagation through the helium gas target. Simulations suggest that such a modulation in the spectrum of the laser pulse could arise due to its interaction with the self excited plasma waves.