摘要
H- PDLC体全息光栅可使光栅的衍射能量集中到非零级的衍射级次上 ,大大提高衍射效率。实验表明 ,不同的材料配方比例、干涉光夹角、PDLC的膜厚、曝光时间均对H-
H PDLC volume holographic grating has much higher diffraction efficiency than normal grating, because it can focus the diffraction light to the non zero band. We have conducted some experiments to investigate the major factors which impact the diffraction efficiency of grating, namely different recipes of PDLC, the degree of two laser beams, thickness of film, exposing time of PDLC cells.
出处
《光学仪器》
2002年第2期18-21,共4页
Optical Instruments
关键词
体全息光栅
聚合物分散液晶
衍射效率
volume holographic grating
polymer dispersed liquid crystal
diffraction efficiency
