Form 9.B Project Summary

Chron: 972025

Proposal Number: 10.02-6100

Project Title: Optical Sensor for Multi-Species Air Quality Monitoring

Technical Abstract (Limit 200 words)

Rapid measurements of trace air contaminants are required for the maintenance of crew safety in spacecraft and human-rated ground test facilities. Currently, these measurements are carried out using a variety of gas-specific instruments. Separate instruments must be installed for each target gas (occupying valuable space) frequent calibration is needed (increasing ground test costs), and response times are slow. Our innovation is a rugged mid-77infrared spectrometer, based on difference-frequency mixing of two diode lasers, which will detect multiple trace gases using absorption spectroscopy. The device will have a wide wavelength tuning range, allowing the detection of multiple species by a single instrument. Concentrations will be measured directly and in real time, eliminating the need for repeated calibration and allowing rapid remedial action. Compact diode lasers will be used in this instrument, thus making it lightweight and small enough for space flight. During Phase I we will build a mid-infrared laser source, demonstrate wide tunability, and make simultaneous concentration measurements of two trace air contaminants such as formaldehyde and methane. In Phase II we will produce and deliver a portable laser spectrometer incorporating our innovations for use in NASA ground test facilities for life support systems.

Potential Commercial Applications (Limit 200 words)

A compact, affordable infrared spectrometer for the quantitative remote sensing of trace gasses would be attractive to industries trying to keep up with tightening EPA regulations, as well as to those trying to implement stricter controls over manufacturing processes.

Name and Address of Principal Investigator (Name,

Organization Name, Mail Address, City/State/Zip)

Konstantin Petrov

Gemfire Corporation

2440 Embarcadero Way

Palo Alto , CA 94303

Name and Address of Offeror (Firm Name, Mail Address,

City/State/Zip)

James H. Stanley

Gemfire Corporation

2440 Embarcadero Way

Palo Alto , CA 94303