Control of volume holograms

Control of volume holograms

Received May 9, 1991; revised manuscript received February 14, 1992; accepted February 25, 1992 The mismatch in the number of degrees of freedom supported by volume holograms and the boundary fields that control them limits the dynamic range of recorded holograms. For holograms controlled by using fractal sampling grids, the maximum dynamic range falls inversely with the minimum number of expos...

Volume Holograms

Imaging using volume holograms

Demetri Psaltis, FELLOW SPIE California Institute of Technology Department of Electrical Engineering 1200 East California Boulevard MS 136-93 Pasadena, California 91125 Abstract. We present an overview of imaging systems that incorporate a volume hologram as one of the optical field processing elements in the system. We refer to these systems as volume holographic imaging (VHI) systems. The vol...

Wigner distribution function of volume holograms.

Based on a linear systems approach, we derive the Wigner distribution function (WDF) of a 4f imager with a volume holographic three-dimensional pupil; then we obtain the WDF of the volume hologram itself by using the shearing properties of the WDF. Two common configurations, plane and spherical wave reference volume holograms, are examined in detail. The WDF elucidates the shift variant nature ...

Diffraction efficiency of strong volume holograms.

The study of volume gratings has led to useful applications in many areas of optics, including integrated optics, acousto-optics, and holography. In most situations the coupled-mode analysis of volume holograms established by Kogelnik1 accurately describes the diffraction behavior of a thick hologram and predicts a diffraction efficiency that is a periodic function of the index perturbation amp...