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Portable Fiber-Optic Real-Time Nitrogen Dioxide Monitor

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 25809
Amount: $749,970.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1995
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
11 Glengarry Way
Cranbury, NJ 08512
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr. H.c. Sun
 (609) 734-2918
Business Contact
Phone: () -
Research Institution
N/A
Abstract

Using Combined Wavelength and Frequency Modulation Spectroscopy coupled with fiber coupled near infrared diode laser, nitrogen dioxide can be detected via its near infrared absorption band. Detection sensitivity in the parts-per-billion level can be achieved. The technique offers 5 decades of linear dynamic range with a response time less than 1 second. Continuous time weight average monitoring is also possible. This technique has the advantage of high chemical selectivity, high sensitivity and non-intrusive nature of detection. Absorbance as low as a few parts in 10-8 can be detected. The use of diode laser and its pure electronic modulation-demodulation scheme permits a compact and portable instrument design. Hence, make possible the lightweight nitrogen dioxide detector. It also excludes some problems of existing detection technology which include: chemical reaction interferences, poor chemical selectivity, slow response, low sensitivity, bulky instrumentation, over concentration sample cell poisoning and optical window contamination induced problems.

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

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