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测量了偶氮材料 MO/PVA和 EO/PVA的光致双折射 ,其值约为δn=2 .7× 1 0 - 3.在同偏振态两路简并四波混频光同时作用于样品同一区域的条件下 ,研究了该材料的双波长共存特性 ,记录了光点存储和图象存储 ,并分析了双波长共存的竞争机制 .
The photo-induced birefringence of the azo materials, MO / PVA and EO / PVA, was measured and found to be about δn = 2.7 × 10-3. Simultaneously the two degenerated four- Under the condition of the same region, the dual-wavelength coexistence characteristics of the material are studied, the spot storage and image storage are recorded, and the competition mechanism of dual-wavelength coexistence is analyzed.