System for rapidly tuning a low pressure pulsed laser

Details System for rapidly tuning a low pressure pulsed laser System for rapidly tuning a low pressure pulsed laser

1988-09-14

1989-09-19

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Tuning

372102, 372 98, H01S 310

Patent

active

048688347

ABSTRACT:
A rapidly tunable low pressure laser comprised of a one electrode pair low ressure CO.sub.2 gas laser gain cell and intra-cavity quarterwave plate and Q-switch. The cell has a fixed laser output coupled at one end of the laser cavity and at the other end of the cavity a wavelength switching device which changes laser lines in less than 1.times.10.sup.-3 .mu.sec, i.e. changes the wavelengths in less than 1 millisecond within the low pressure laser, to produce at least two quick pulses of different wavelengths at a separation of 1 millisecond. The wavelength switching device is comprised of a fast rotating mirror on the laser optical axis and a fixed grating, or a rotating grating on the optical axis.

REFERENCES:
patent: 4601036 (1986-07-01), Faxvog et al.
patent: 4696012 (1987-09-01), Harshaw

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