离轴微粒场全息术中记录介质分辨率要求

FILM RESOLUTION REQUIREMENT IN OFF-AXIS PARTICLE FIELD HOLOGRAPHY

本文从离轴微粒场全息记录光路的一般模型出发,导出了离轴微粒场全息术中记录介质分辨率要求的普遍公式。讨论了三种典型形状微粒对记录介质的分辨率要求。结果表明,除了参考光的倾角外,微粒的尺寸和参、物光的波前曲率差及微粒重心偏离光轴的距离也都是影响记录介质分辨率要求的主要因素。

In this paper, the universal formula of film resolution requirement in off-axis particle field holography is derived from a general model of recording arrangement of off-axis particle field holography. The film resolution requirement for particles of three typical shape is discussed. The results show that the particle size, the wavefront curvature difference between reference and object beams, and the distance from the particle centre of gravity to optical axis are also the main factors influencing the film resolution requirement other than the sole factor the inclination of reference beam reported up-to-date.