银盐干板稀释显影折射率调制特性实验研究

通过银盐全息干板稀释显影方法，实验研究了干板胶层有效介质折射率的曝光量特性和折射率调制度与曝光量、参物比等参量之间的关系，分析讨论了体位相全息图的折射率调制机理，给出了稀释显影银盐干板有效介质折射率和折射率调制度的曝光特性曲线，指出了等参物光强比记录的全息光栅可以最大限度地利用干板胶层的折射率调制容限，解释了以往文献中难以解释的实验现象。

Experimental Research on the Refractive Index Modulation of Silver-Halide Plate with Dilution Developing Process

By means of dilution developing process for the silver halide holographic plate, the influences of exposure energy on refractive index and index modulation in emulsion were experimentally researched. According to the exposure characteristics of optical density and diffraction efficiency, the absorption modulation of silver-halide emulsion with dilution developing process will be ignored. The hologram is a volume phase grating with an average absorption coefficient but no absorption modulation. The index modulation mechanism of the gratings was discussed, and the characteristics curves of refractive index and index modulation of effective medium in silver-halide emulsion were revealed. The maximum of index modulation of silver halide emulsion can be reached at equally intensity between reference and object waves. The test results in earlier papers have been made clear.