Volume-holographic filters for rotational sensing of three-dimensional objects

Department of Optics and Photonics, National Central University, Chung-Li 320, Taiwan.
Applied Optics (Impact Factor: 1.78). 04/2007; 46(9):1456-9. DOI: 10.1364/AO.46.001456
Source: PubMed


A highly precise rotational filter based on a volume-holographic optical element is proposed and demonstrated. We present a clear theoretical calculation of the rotation sensitivity of the volume-holographic filter used to sense the rotation of a spherical ground glass object. By introducing the longitudinal displacement of the scattering point across the sphere, the sensitivity of the filter is greatly improved to 350 times that of a general case for a planar ground glass. (c) 2007 Optical Society of America.

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