ABSORPTION DIGITAL REFRACTOMETRY

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: N/A
Agency Tracking Number: 5378
Amount: $40,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1987
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Measurement Concepts Inc.
Colts Towne Plaza, 41 Hway 34 South, Colts Neck, NJ, 07722
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 () -
Business Contact
 Dr. Edward Collett
Title: President
Phone: () -
Research Institution
N/A
Abstract
THIS PROPOSAL DESCRIBES A NEW METHOD FOR DETERMINING THE REFRACTIVE INDEX AND EXTINCTION COEFFICIENT OF OPTICAL MATERIALS. THIS METHOD IS AN OPTO-ELECTRONIC METHOD, IS COMPLETELY AUTOMATED, EXTREMELY FAST AND IS CAPABLE OF OBTAINING ACCURACIES AND RESOLUTIONS COMPARABLE WITH PRISM SPECTROMETERS. THIS MEASUREMENT METHOD IS CALLED ABSORPTIONDIGITAL REFRACTOMETRY. THE MOST ACCURATE METHOD AT PRESENT FOR OBTAINING REFRACTIVE INDICES IS WITH THE DIVIDED CIRCLE PRISM SPECTROMETER. IT IS CAPABLE OF DETERMINING THE REFRACTIVE INDEX TO SIX DECIMAL PLACES WITH AN ACCURACY OF 1X10-6. HOWEVER, THESE INSTRUMENTS ARE EXTREMELY EXPENSIVE, REQUIRE THE FABRICATION OF AN (UNKNOWN) MATERIAL INTO A "PERFECT" EQUILATERAL PRISM, ARE SPECTRALLY RESTRICTED, PRACTICALLY LIMITED TO TRANSPARENT MATERIALS ANDARE NOT READILY ADAPTED TO AUTOMATION. ABSORPTION DIGITAL REFRACTOMETRY OVERCOMES ALL OF THESE LIMITATIONS. THE EQUATIONS FOR DETERMINING THE REFRACTIVE INDEX AND THE EXTINCTION COEFFICIENT ARE DERIVED USING THE STOKES POLARIZATION PARAMETERS AND THE MUELLER MATRIX FORMULATION. IN THE FINAL SECTION THE PROPOSED LABORATORY CONFIGURATION IS DESCRIBED. IF THE CONCEPT OF ABSORPTION DIGITAL REFRACTOMETRY IS VALIDATED IT IS BELIEVED THAT A COMMERCIAL SYSTEM COULD BE BUILT WHICH WOULD FIND NUMEROUS APPLICATIONSIN THE DEVELOPMENT OF OPTICAL MATERIALS.

* information listed above is at the time of submission.

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government