Abstract: The present invention relates to an optical beam deflector, beam modulator and beam shaper using a Raman-Nath diffraction methodology generated by a plurality of writing laser beams focused onto a bulk optical material having anisotropic optical characteristics for deflection, modulation, and shaping of a beam of light incident to the diffraction grating. The writing laser beams are split from a turnable laser source and the choice of the desired operational characteristic, i.e. deflector, modulator, and shaper are chosen by selective manipulation of the source beam and the derived split beams.
Type:
Grant
Filed:
June 4, 1987
Date of Patent:
November 14, 1989
Assignee:
The United States of America as represented by the Secretary of the Navy