Acta Optica Sinica, Volume. 5, Issue 8, 761(1985)
Shaping of laser beam profiles with a phase grating
We developed a new technique using a phase grating, which modulates the near field of a laser beam to form a far-field flat-top intensity profile. The conversion efficiency is about 90%.
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LIANG XIANCHUN, CHEN ZEZUN. Shaping of laser beam profiles with a phase grating[J]. Acta Optica Sinica, 1985, 5(8): 761