HOLOGRAPHIC DIFFRACTION GRATINGS

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: 629
Amount: $496,527.00
Phase: Phase II
Program: SBIR
Awards Year: 1984
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
8201 Coporate Drive Suite 920, Landover, MD, 20785
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Joseph B. Gurman
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
NEW TECHNIQUES ARE NEEDED IN THE FABRICATION OF HIGH-QUALITYDIFFRACTION GRATINGS OF THE TYPE REQUIRED FOR PLANNED AND ANTICIPATED SPACE ASTRONOMY INSTRUMENTS. GRATINGS WITH THE REQUIRED LOW LEVELS OF SPECTRALLY-SCATTERED LIGHT AND LARGE BLAZE ANGLES ARE NOT CURRENTLY AVAILABLE, AND IT IS DOUBTFULTHAT SUCH GRATINGS CAN BE PRODUCED BY THE TRADITIONAL METHODOF MECHANICAL RULING. A MORE PROMISING APPROACH IS TO USE AHOLOGRAPHIC INTERFERENCE PATTERN TO EXPOSE A PHOTORESIST COATING ON THE GRATING SURFACE. DURING PHASE I, SEVERAL PROMISING HOLOGRAPHIC METHODS ARE INVESTIGATED, INCLUDING: FABRY-PEROT METHODS, DIGITAL INTERFEROGRAM SYNTHESIS, AND SELECTIVE CHEMICAL ETCHING. THE FEASIBILITY OF USING THESE TECHNIQUES ARE ASSESSED BY LABORATORY TESTS OF CRITICAL ASPECTS OF THE FABRICATION TECHNOLOGY.

* Information listed above is at the time of submission. *

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