HOLOGRAPHIC BEAM SAMPLER

摘要

An holographic beam sampler comprises a substrate made of highly transparent fused silica or zinc selenide, both capable of sustaining high power laser beams. The substrate defines an outer surface through which the light beam being sampled propagates. A three-dimensional holographic diffracting relief is etched on this outer surface directly into the lightpropagating material of the substrate. When a light beam propagates through the outer surface of the substrate, the three-dimensional diffracting relief extracts from this light beam at least one pair of low power beam samples.