Automatic phase-locked control of grating tiling
Optics and Lasers in Engineering(2012)
摘要
The development of phased-array grating compressor is a crucial issue for the high-energy, ultra-short pulse petawatt-class lasers. Several systems have adopted the tiling-grating approach to meet the size requirements for the compression gratings. Grating tiling need to be precisely phased to ensure a transform-limited focal spot when focusing the high-energy laser pulses onto the target. Monochromatic grating automatic phasing and performance maintaining are experimentally achieved with a far-field CCD camera technique based on a two-tiling system.
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关键词
Tiling grating,Phase locking,Far-field monitor,SPGA algorithm
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