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6 February 2008 Pulse transmission simulation in the systems including diffraction components by real ray trace
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The method of real ray trace for the time characteristic analyzing of laser pulse is presented. By tracing the sampling rays with optical path or phase initialized by given input pulse and limited by the entrance pupil, the output pulse samples are calculated including the pulse width and energy distribution and the fitting pulse curve is obtained. Further more, this method can be also used for analyzing the affection of the tolerance in pulse transmission systems to the beam quality. Taking some pulse transmission systems as examples in which there are different diffraction components such as diffraction gratings, binary optical elements and holographic elements, the output pulse curves come from different input pulse are given, and the functions of different diffraction elements as pulse boarder and compressor are compared. As shown by the results that the multiple diffraction of binary optical elements will not only generates multiple focus points at the output space to affect the space quality of laser beam, but also leads to broad the pulse width so as to change the laser's time characteristics.
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Xiaotong Li, Zhaofeng Cen, and Shitao Deng "Pulse transmission simulation in the systems including diffraction components by real ray trace", Proc. SPIE 6823, High-Power Lasers and Applications IV, 68230J (6 February 2008);


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