LASER ABSORPTOMETER FOR DETECTION OF TRACE SPECIES

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: N/A
Agency Tracking Number: 17409
Amount: $299,986.00
Phase: Phase II
Program: SBIR
Awards Year: 1993
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Science Research Laboratory
15 Ward Street, Somerville, MA, 02143
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr. Allen Flusberg
 Principal Research Scientist
 (617) 547-1122
Business Contact
Phone: () -
Research Institution
N/A
Abstract
WITH THE INCREASE IN ATMOSPHERIC POLLUTION AND A NEW, GROWING PUBLIC AWARENESS OF RESULTING ENVIRONMENTAL DAMAGE, THERE IS A NEED FOR NEW TECHNOLOGY TO MEASURE THE CONCENTRATION OF TRACE SPECIES IN THE ATMOSPHERE. EXTRACTIVE METHODS, IN WHICH A SEALED SAMPLE OF AIR IS ANALYZED IN A LABORATORY, ARE EXPENSIVE AND ARE INAPPLICABLETO CONTINUOUS, IN SITU MONITORING OF CONCENTRATIONS. SCIENCE RESEARCH LABORATORY PROPOSES THE DEVELOPMENT OF AN INSTRUMENT CALLED A LASER INTERFEROMETRIC ABSORPTOMETER (LIA) TO FILL THIS NEED. THE BASIS OF THIS INSTRUMENT IS THE INTERFEROMETRIC MEASUREMENT OF THE OPTICAL-PATH CHANGE THAT OCCURS IMMEDIATELY AFTER A PULSED LASER BEAM IS ABSORBED BY TRACE SPECIES PRESENT IN ONE ARM OF THE INTERFEROMETER. THE LIA WILL BE SENSITIVE TO PARTS-PER-TRILLION TRACE-GAS CONCENTRATIONS, 2-3 ORDERS OF MAGNITUDE BETTER THAN INSTRUMENTS BASED ON OTHER APPROACHES TO MONITOR TRACE SPECIES IN THE FIELD.

* information listed above is at the time of submission.

Agency Micro-sites

US Flag An Official Website of the United States Government