Optical servo with high design freedom using spherical-wave Bragg degeneracy in a volume holographic optical element

Volume Holographic Optical Elements

Optical Design for a Spatial-Spectral Volume Holographic Imaging System.

Spatial Spectral Holographic imaging system (S(2)-VHIS) is a promising alternative to confocal microscopy due to its capabilities to simultaneously image several sample depths with high resolution. However, the field of view of previously presented S(2)-VHIS prototypes has been restricted to less than 200μm. This paper presents experimental results of an improved S(2)-VHIS design which have a f...

Multilayer volume holographic optical memory.

We demonstrate a scheme for volume holographic storage based on the features of shift selectivity of a speckle reference-wave hologram. The proposed recording method permits more-efficient use of the recording medium and yields greater storage density than spherical or plane-wave reference beams. Experimental results of multiple hologram storage and replay in a photorefractive crystal of iron-d...

Holographic optical elements recorded on spherical surfaces with photopolymers.

A method for recording of holograms on spherical substrates is presented. As recording material we used a photopolymer placed between two spherical glass plates that are concentric.

Digital holographic microscopy with pure-optical spherical phase compensation.

Telecentric architecture is proposed for circumventing, by the pure-optical method, the residual parabolic phase distortion inherent to standard configuration of digital holographic microscopy. This optical circumvention produces several important advantages. One is that there is no need for computer compensation of the parabolic phase during the phase map recovering procedure. The other is tha...