Coherent light generators – Particular resonant cavity – Plural cavities
Patent
1990-04-18
1991-01-29
Gonzalez, Frank
Coherent light generators
Particular resonant cavity
Plural cavities
372 99, 330 43, H01S 3082
Patent
active
049892169
ABSTRACT:
A double conjugate laser beam amplifier which twice conjugates the laser ut beam and provides an output beam in exactly the same direction and of the same polarization as the input beam while retaining the alignment stability of singly conjugated amplifiers even when the thin film polarizer between two conjugate amplifiers is not stable. A half-wave voltage at a Pockels cell positioned on the beam axis immediately prior to the polarizer controls whether the oscillator beam is transmitted through the polarizer or is reflected off the polarizer toward a first conjugate amplifier for amplification and retroflection back through the first conjugate amplifier and the polarizer into a second conjugate amplifier for further amplification and retroreflection back and is reflected off the polarizer a second time. The double conjugate amplifiers may be cascaded to both increase output and laser beam pulse repetition rate.
REFERENCES:
patent: 4618783 (1986-10-01), Pradere et al.
patent: 4660205 (1987-04-01), Harter et al.
patent: 4682340 (1987-07-01), Dave et al.
patent: 4709368 (1987-11-01), Fukuda et al.
patent: 4725787 (1988-02-01), Chandra
patent: 4875219 (1989-10-01), Russell
Chandra Suresh
Daunt Geraldine H.
Gonzalez Frank
Harwell Max L.
Lane Anthony T.
Lee Milton W.
Morse Susan S.
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