HOLOGRAPHIC DIFFRACTION GRATINGS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$496,527.00
Award Year:
1984
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
629
Agency Tracking Number:
629
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
8201 Coporate Drive Suite 920, Landover, MD, 20785
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Joseph B. Gurman
() -
Business Contact:
() -
Research Institute:
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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