Azimuthally polarized beam quality improvement system

Details Azimuthally polarized beam quality improvement system Azimuthally polarized beam quality improvement system

1981-05-14

1985-07-23

Davie, James W.

Coherent light generators

Particular beam control device

372 95, 372106, 350394, 350395, 350619, 350616, H01S 310

Patent

active

045312168

ABSTRACT:
A two-mirror system for transforming an azimuthally or linearly polarized laser beam into a beam having a number of sections, the average phase and polarization of each section being substantially similar. Both mirrors are segmented into eight pie-shaped sections, each of which contains a coating that gives a .+-.90.degree. phase shift or the appropriate uniform optical path difference.

REFERENCES:
patent: 4050036 (1977-09-01), Chambers et al.
patent: 4312570 (1982-01-01), Southwell
Chodzko et al., "Annular (HSURIA) Resonators: Some Experimental Studies Including Polarization Effects", Applied Optics, vol. 19, No. 5, Mar. 1980.
Southwell, "Multilayer Coatings Producing 90.degree. Phase Change", Applied Optics, vol. 18, No. 11, 1 Jun. 1979.
Fink; "Polarization Effects of Axicons", Applied Opt., vol. 18, No. 5, 1 Mar. 1979.
"Performance of an Annular Resonator with a Polarizer in the Annular Leg", by Guhn et al., App. Optics, vol. 20, No. 23, 1 Dec. 1981.
"Split-Mode Unstable Resonator", Freiberg et al.; App. Optics, vol. 16, No. 5, 1977.

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