Polarization rotation method and apparatus

Details Polarization rotation method and apparatus Polarization rotation method and apparatus

1978-10-19

1981-02-24

Corbin, John K.

350394, G02F 101, G02B 2728

Patent

active

042524105

ABSTRACT:
A method and apparatus for rotating through a selected angle the polarization vector of a substantially linearly polarized electromagnetic beam by using three or four reflections with the output electromagnetic beam being substantially free of ellipticity. By selecting the second and third angles of incidence such that the ellipticity introduced by the second reflection is cancelled by the third reflection and the first and fourth angles of incidence which introduce substantially no ellipticity, the polarization vector of the incident electromagnetic beam need not be restricted to being parallel or perpendicular to the incident plane.

REFERENCES:
Klein, A. G., "Novel Prism for Use in Scanning Systems", Applied Optics, vol. 12, 3-1973, pp. 616-617.
Keilmann, F., "How to Flip the Polarization of Infrared Laser Beams", Optics Comm., vol. 14, 6-1975, pp. 236-237.
Chraplyvy, A. R., "Polarization Flipper for Infrared Beams", Applied Optics, vol. 15, 1976, pp. 2022-2023.
Klein, A. G., "Polarization Flipper for Infrared Laser Beams: Comment", Applied Optics, 6-1977, p. 1489.

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