Jersey Nuclear-avco Isotopes, Inc.

Robert S Congleton

Kenneth Avicola

Edmond B Treacy

Gay W Hong

A system for making optimum use of frequency shifted radiation by extracting both front and back travelling frequency shifted radiation beams. The two extracted laser beams are later combined in the same polarization for energization of a dye laser channel or cell for increased pumping efficiency in the dye laser operation. Additionally, where the generating cavity for the two beams is mode locked, the two extracted beams may be applied to the dye laser cell in time staggered manner in order to maintain the stability of subsequent amplification stages between pulses.

Use of multiple beams from frequency augmented laser radiation

A system for multiplexing or demultiplexing pulsed laser radiation having an acousto-optical device which is electrically controlled to switch a common path of high pulse rate laser radiation between a plurality of spatially distinct paths for relatively lower pulse rate laser radiation at which the pulses are sequenced according to a predetermined time pattern. The acousto-optical element typically includes a Bragg cell which is electrically driven by a set of distinct frequencies, causing deflection of radiation passing therethrough at a predetermined set of angles whereby pulsed radiation on a single path may be distributed onto the plural separate paths or radiation on plural separate paths of time-sequenced pulses of radiation can be combined into a single path of augmented pulse rate. The control of the acousto-optical element may be provided by selectively switching the output of a plurality of fixed frequency oscillators of different frequency to the acousto-optical element in accordance with the pattern of pulses on the common or plural distinct paths or a voltage-controlled oscillator may be sequenced through a repeating set of frequencies which are sampled one or more times per sequence to develop an error signal resulting in feedback control over the oscillator to eliminate long-term drift.

Acousto-optic multiplexing and demultiplexing

A system of passive or static optics for combining distinct beams of laser radiation into a number of output beams, each having colinear, superimposed beam components of the original radiation. This system further provides power sharing between the combined beams of the power in the original input beams of laser radiation.

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Richland, WA, United States of America

Robert S Congleton