共查询到17条相似文献,搜索用时 156 毫秒
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研究一种高衍射效率、高感光度亚甲基兰红敏重铬酸盐明胶(MBDCG)全息记录材料。用这种材料记录的全息图经分子改性、脱去明胶的强吸潮基团,获得在高湿度环境中稳定的高衍射效率的MBDCG全息图 相似文献
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本文介绍了用卤化银全息干版制作明胶相位全息图的成像机理。采用该机理,可综合卤化银及重铬酸盐两种记录介质的优点。在曝光阶段,保留有卤化银感光材料的全色光谱响应范围,及高感光灵敏度的优点。最终的产品好似重铬酸盐明胶全息图,有较高的衍射效率及高的透明度。 相似文献
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无明胶重铬酸盐全息记录材料及实时特性 总被引:3,自引:2,他引:1
本文简要报道无明胶重铬酸盐全息记录材料的基本特性及其实时效应。实验中获得了正负一级实时衍射效率高达25%的平面透射光栅。 相似文献
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本文根据实验结果,比较分析分别用两种不同重铬酸盐全息材料(重铬酸盐明胶和无明胶重铬酸盐全息软片)制作的全息图的内部光化学反应产物(螯合物)的微观化学结构,对二者在抗潮能力和环境稳定性方面表现出的显著差异作了比较合理的理论解释。首次提出全息图具有优良的抗潮能力和环境稳定性的根本原因在于螯合物(?)部化学结构的完全对称的观点。 相似文献
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全息记录新材料:重铬酸盐—三醋酸纤维素酯 总被引:1,自引:1,他引:0
本文报道一种新的全息记录材料:重铬酸盐-三醋酸纤维素酯组成的感光介质。这种全息材料具有较强的实时效应,较高的衍射效率,良好的抗潮能力和环境稳定性等特点。文中分析了这种材料的感光成象机理,通过实验研究了其全息记录特性,给出了实验结果。 相似文献
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利用传输矩阵法数值计算了一维全息光子晶体的带隙结构,分析了针对记录材料重铬酸盐明胶(DCG),折射率周期性渐变的一维全息光子晶体结构的透射谱特性.通过计算记录光路中相干光束以不同入射角干涉时产生不同的禁带分布范围,与改变再现光路中光束和干板的夹角相比较,提出了弥补固定厚度DCG产生光子晶体的禁带分布范围较窄的方法. 相似文献
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A long-lasting development in the area of holographic recording materials has shown that gelatin, a natural material, can
be used as a medium for the holographic recording. Dichromated gelatin is a result of the effort to obtain phase holographic
optical elements with high diffraction efficiency. This paper gives overview of its importance for holography, difficulties
with its treatment, possibilities of its utilization, optical properties, and explains chemical processes being under way
in gelatin from its exposure to fixing. Our experience with the formation of holographic optical elements into dichromated
gelatin is mentioned.
This work was supported by the project LN00A015 of the Ministry of Education of the Czech Republic. 相似文献
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M. Mazakova M. Pancheva P. Kandilarov P. Sharlandjiev 《Optical and Quantum Electronics》1982,14(4):311-315
Dichromated gelatin would be the most suitable irreversible medium for holographic recording but for its low sensitivity. The efficiency of the photoinduced reduction of the chromium ion increases considerably if superfine grains of silver halide crystals are present in the layer. The light sensitivity achieved is about 10 times better than that of dichromated gelatin layers, obtained and processed in the conventional way. 相似文献
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For a recording medium such as dichromated gelatin, a quasi-Fourier transform holographic memory is preferred over the exact Fourier transform. We proceed here with angular multiplexing and consider undesired reconstructed waves such as cross-talk noise, and show that the signal-to-noise ratio is 33 dB for 20 angular multiplexed elements in 25 μm thickness of the recording medium. We also study the energy coupling between gratings to standardize the diffraction efficiency of each multiplexed grating. 相似文献
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The hologram recording on the dichromated gelatin layers using the radiation of a diode laser and a diode-pumped solid-state
laser is investigated. The recording on dry and self-developed dichromated gelatin layers is experimentally demonstrated.
Various recording regimes are studied for wavelengths of 0.53 and 0.66 μm. 相似文献
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A. Villamarín I. J. Sola M. V. Collados J. Atencia O. Varela B. Alonso C. Méndez J. San Román I. Arias L. Roso M. Quintanilla 《Applied physics. B, Lasers and optics》2012,106(1):135-141
We have designed and developed a pulse compressor with volume transmission holographic gratings to be implemented in post-compression experiments based on filamentation in gases. Pulse compression down to 13?fs has been demonstrated. The gratings have been recorded in commercial PFG-04 dichromated gelatin emulsions with a recording wavelength of 532?nm, attaining sufficient index modulation to achieve high efficiency when they are illuminated by an 800-nm laser. 相似文献