CAJ | 학술논문

在蓝绿敏光致聚合物材料中,用532 nm激光器作为光源,在等光强不同重复频率和等重复频率不同光强条件下分别进行全息记录,用红光进行动态读出,获得两种记录条件下的衍射效率曲线.实验结果表明,在近连续脉冲光下进行全息记录时,较低重复频率和较低光强的脉冲激光能够明显提高光致聚合物光栅的最高衍射效率,通过优化脉冲激光的重复频率和平均光强,可以在材料中记录衍射效率最高的全息图.
재람록민광치취합물재료중,용532 nm격광기작위광원,재등광강불동중복빈솔화등중복빈솔불동광강조건하분별진행전식기록,용홍광진행동태독출,획득량충기록조건하적연사효솔곡선.실험결과표명,재근련속맥충광하진행전식기록시,교저중복빈솔화교저광강적맥충격광능구명현제고광치취합물광책적최고연사효솔,통과우화맥충격광적중복빈솔화평균광강,가이재재료중기록연사효솔최고적전식도.
The influence of the pulse repetition frequency and average writing intensity on volume holograms recorded in photopolymer films was studied.A pulsed diode-pumped YAG laser (532-nm wavelength) was used as recording light source.Volume holograms were recorded with different pulse repetition frequencies under the same average writing intensity,and different average intensities at the same repetition frequency .The diffraction efficiencies were measured real-time during the holographic grating formation.Experimental results showed that the lower repetition frequency and writing intensity resulted in higher diffraction efficiency .This suggests the optimization method of recording conditions for holographic recording in photopolymers using pulsed laser sources.