Multifrequency laser oscillator for holographic contouring

Details Multifrequency laser oscillator for holographic contouring Multifrequency laser oscillator for holographic contouring

1974-11-04

1976-07-20

Corbin, John A.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

331 945C, 350 35, G01B 9025, H01S 310, G02B 2700

Patent

active

039703908

ABSTRACT:
A multifrequency laser oscillator which generates coherent light of two closely adjacent optical frequencies in rapid succession for recording contour holograms by the double exposure technique. The two light frequencies are selected by an optical intercavity frequency selector which is rotatable to a first position to select one frequency and to a second position to select the other frequency. The described laser oscillators have a ruby lasing medium and lase at the R.sub.1 and R.sub.2 transitions of the ruby resonant fluorescence.

REFERENCES:
patent: 3486129 (1969-12-01), Van Tran et al.
patent: 3603684 (1971-09-01), Wuerker
patent: 3603685 (1971-09-01), Heflinger et al.
patent: 3707687 (1972-12-01), Hercher et al.
patent: 3743965 (1973-07-01), Offner

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