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Proceedings Paper

Formation of hot image in an intense laser beam through a saturable nonlinear medium slab
Author(s): Youwen Wang; Xiaohui Ling; Zhiping Dai; Liezun Chen; Shizhuan Lu; Kaiming You
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Paper Abstract

In high-power laser system such as Petawatt lasers, the laser beam can be intense enough to result in saturation of nonlinear refraction index of medium. We present an analytical and simulative investigation of hot image formation in an intense laser beam through a saturable nonlinear medium slab based on Fresnel-Kirchhoff diffraction integral and the standard split-step Fourier method. The analytical results are found in agreement with the simulative ones. It is shown that, hot images can still form in an intense laser beam through a saturable nonlinear medium slab, additionally, the saturable nonlinearity does not change the location of hot images, while may decrease the intensity of hot images, i.e., the intensity of hot images decreases with the saturation light intensity lowering, and can stop to increase with the intensity of the incident laser beam heightening due to saturation of nonlinearity. Moreover, variations of intensity of hot images with the obscuration type and the slab thickness are discussed.

Paper Details

Date Published: 9 November 2016
PDF: 12 pages
Proc. SPIE 10016, High-Power Lasers and Applications VIII, 100161J (9 November 2016); doi: 10.1117/12.2245763
Show Author Affiliations
Youwen Wang, Hengyang Normal Univ. (China)
Xiaohui Ling, Hengyang Normal Univ. (China)
Zhiping Dai, Hengyang Normal Univ. (China)
Liezun Chen, Hengyang Normal Univ. (China)
Shizhuan Lu, Hengyang Normal Univ. (China)
Kaiming You, Hengyang Normal Univ. (China)

Published in SPIE Proceedings Vol. 10016:
High-Power Lasers and Applications VIII
Ruxin Li; Upendra N. Singh; Robert F. Walter, Editor(s)

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