Infrared polarization rotator and optical switch

Details Infrared polarization rotator and optical switch Infrared polarization rotator and optical switch

1976-11-05

1978-06-06

Corbin, John K.

350353, B01F 101

Patent

active

040933440

ABSTRACT:
An optical polarization rotator is developed for use with infrared radiation using a nonlinear, two-photon interaction in a solid medium. The mechanism employed is resonance dispersion, where the sum frequency of an infrared beam to be rotated and a visible control beam is close to the frequency of a two-photon transition of exciton states, thereby producing different amounts of dispersion for the two orthogonal components of the linearly polarized infrared beam. The result of a phase difference between the two components is a rotation of the plane of polarization of the infrared beam.

REFERENCES:
patent: 3671747 (1972-06-01), Duguay
patent: 4040718 (1977-08-01), Bjorklund et al.
Abrams et al., "Characteristics of a Mode-Locked TEA CO.sub.2 Laser", Applied Physics Letters, 15 Dec. 1971, pp. 518-520.
Penzkofer et al., "Two-Photon Spectroscopy Using Pico-Second Light Continua", Applied Physics Letters, 15, Mar. 1976, pp. 319-321.

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