Coherent light generators – Particular resonant cavity – Unstable resonator
Patent
1991-10-23
1992-10-20
Healy, Brian
Coherent light generators
Particular resonant cavity
Unstable resonator
372 97, 372 98, 372 99, H01S 308
Patent
active
051576848
ABSTRACT:
An unstable resonator, dc excited, is pulsed using an adjoint coupled beam of low power as the pulsing element. The resonator feedback consists of the self-feedback and the adjoint beam feedback. The self-feedback can be sufficient for self-oscillation and pulsed operation can be achieved by controlling the repetition rate and the magnitude of the adjoint beam power. Complete control and shut-off between pulses with complete freedom of repetition rate is achieved if the self-feedback is insufficient for laser oscillation. The invention was demonstrated on a 10 kilowatt average power CO.sub.2 laser with pulse control provided by with a 100 watt adjoint feedback beam.
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Benda John A.
Blaszuk Paul R.
Palma Gary E.
Smith David C.
Healy Brian
United Technologies Corporation
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