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Saturday, August 09, 2003 6:31:19 PM
United States Patent 5,018,163
Daunt , et al. May 21, 1991
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Gatling gun laser pulse amplifier using an optical diode
Abstract
A laser oscillator system which transmits laser input beam pulses through optical diode and into a plurality of time-multiplexed phase conjugate amplifier which sequentially amplify in chronological order subsequent input beam pulses. The optical diode is positioned on the oscillator laser beam pulse axis and is comprised of a polarizer, a half-wave plate which rotates the pulse polarity by 45.degree. in one direction and a Faraday rotator which rotates the pulse polarity 45.degree. in the opposite direction. A plurality of grouped Pockels cells and polarizers are positioned on the oscillator axis past the Faraday rotator. The polarizers route the input beam pulse toward a phase conjugate amplifier when a half-wave voltage is applied to the Pockels cell. Each phase conjugate amplifier has a phase conjugate mirror, at its output for retroreflecting the once amplified input laser beam pulse back therethrough for a second amplification. The twice amplified laser beam pulse is returned back to and reflected off the beam splitter back through the Pockels cell. The pockels cell rotates the pusle back to its orignial polarity as the pulse returns to the optical diode. Teh faraday rotator rotates the pulse 45.degree. and the half-wave plate rotates the pulse another 45.degree. for a total of 90.degree.. The 90.degree. rotated amplified output pulses from the time multiplexed amplifiers are reflected off the polarizer and out the laser system.
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Inventors: Daunt; Geraldine H. (Arlington, VA); Utano; Richard A. (Winterpark, FL); Chandra; Suresh (Falls Church, VA)
Assignee: The United States of America as represented by the Secretary of the Army (Washington, DC)
Appl. No.: 515139
Filed: April 26, 1990
Current U.S. Class: 372/68; 372/97; 372/105; 372/106; 372/108
Intern'l Class: H01S 003/07
Field of Search: 372/25,703,105,106,108,99,68,97
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