Influence of laser wavelength on target irradiation uniformity |
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Authors: | Xiujuan Jiang Shenlei Zhou |
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Institution: | a School of Information Engineering, Guangdong University of Technology, Guangzhou, 510006, China b National Laboratory for High Power laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China |
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Abstract: | Target irradiation uniformity is very important in laser-produced plasmas experiments. The wavelength dependence of the irradiation uniformity is investigated in the joint scheme using a lens array (LA) and the technique of smoothing by spectral dispersion (SSD). It is proved that, for the long wavelength laser, lateral thermal conduction smoothing within the target is quite effective, while for the ultraviolet laser, SSD is the main smoothing mechanism. So SSD and other temporal smoothing methods are very necessary in producing uniform irradiation with laser beam of short wavelength. |
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Keywords: | 42 60 Jf 42 60 By 42 25 Fx 42 25 Hz |
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