Extremely Narrowband Sodium Line Filter For Daytime Adaptive Optics

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: N/A
Agency Tracking Number: 19682
Amount: $63,500.00
Phase: Phase I
Program: SBIR
Awards Year: 1993
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
11689 Sorrento Valley Road,, Suite A, San Diego, CA, 92121
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Eric Korevaar
 (619) 792-8501
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THE OBJECTIVE OF THIS RESEARCH IS TO SEE IF AN EXTREMELY NARROWBAND SODIUM FARADAY ATOMIC LINE FILTER CAN BE USED TO ALLOW ADAPTIVE SYSTEMS USING A SODIUM LASER GUIDE STAR TO WORK UNDER DAYTIME LIGHT CONDITIONS FOR APPLICATIONS SUCH AS IMAGING SATELLITES. THE POTENTIAL APPLICATIONS OF THE FILTER TECHNOLOGY ARE BASED ON THE EXTREMELY SMALL BACKGROUND LIGHT ACCEPTANCE BANDWIDTH OF THE FILTER (ABOUT .005 nm), ITS POTENTIAL FOR THROUGHPUT EFFICIENCIES (INCLUDING POLARIZATION LOSSES) OF AROUND 30%, AND THE FACT THAT ITS TRANSMISSION BAND OVERLAPS A SOLAR FRAUNHOFER LINE WITH AN ADDITIONAL FACTOR OF 20 REDUCTION IN BACKGROUND LIGHT. CALCULATIONS OF DAYTIME ADAPTIVE OPTICS SYSTEM PERFORMANCE USING THE FILTER WILL BE CARRIED OUT, AND A FILTER APPROPRIATE FOR AN ADAPTIVE OPTICS SYSTEM WILL BE DESIGNED AND BUILT. THE FILTER WILL BE TESTED FOR THROUGHPUT, OUT OF BAND REJECTION, AND SPECTRAL RESPONSE TO VERIFY ITS PREDICTED PERFORMANCE.

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

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