Correlation properties of random phase diffusers for multiplex holography.

Random phase diffusers used to individually code the reference beams employed in multiplexing a set of holograms are best characterized by their autocorrelation and cross-correlation properties. In this paper multilevel (n-level) phase diffusers and ground-glass diffuser models based on a spatial random telegraph wave are employed to investigate the performance of such diffusers for both plane wave and spherical wave illumination. The advantage of using balanced phase diffusers is indicated, and it is shown that a binary phase diffuser can, in principle, perform as well as a multilevel (n > 2) diffuser, and even as well as ground glass if the spatial fineness of the diffusers is comparable.

Scanning technique for coherent processors.

In certain linear coherent processing techniques a temporal signal is spatially encoded on an amplitude transmittance that serves as the processor input. In this paper a technique is presented whereby the temporal signal is alternately used to amplitude- and/or phase-modulate a raster scan of the processor's input plane. Using the temporal integrating and summing properties of a hologram placed in the processor's output plane, one can then regain the identical processor output that would have arisen from the spatial encoding technique.

One-dimensional linear coherent processing using a single optical element.

A coherent processor is presented which is capable of performing a large class of 1-D linear space-variant operations. The only components of the processor are a 1-D input, a mask whose transmittance is specified by the desired linear operation, and an output plane. Compared with other 1-D processors, this processor has advantages of real space compactness and total elimination of vignetting.

[Anesthesia using piritramide and chlorpromazine in dogs].

Piritramide with chlorpromazine in doses of 3 mg kg-1 of live weight causes total anesthesia the intensity of which differs according to the breed and condition of the individual. Anesthesia sets in in 30 to 45 minutes and lasts for 3/4 to 1 1/2 hour. During the anesthesia somatic temperature and frequency of pulse decrease, and even after 24 hours they do not reach the original values.