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Effective gray scale in lithographically scribed planar holographic Bragg reflectors
Dmitri Lazikov1, Christoph Greiner, Thomas W Mossberg
1Lightsmyth Technologies, Incorporated, 860 W. Park Street, Suite 250, Eugene, Oregon 97401, USA.
Applied Optics
|March 11, 2004
Abstract:
We demonstrate that holographic Bragg reflector grating structures, which are photolithographically scribed in planar waveguides, support a unique approach to apodization and overlay that uses fixed-depth etching and partial contour writing to achieve continuous reflective amplitude control.