Trace gas sensor based on a novel room temperature mid-infrared laser source

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$70,000.00
Award Year:
2001
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
NASA1475
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Aculight Corporation
11805 North Creek Parkway S. Suite 113, Bothell, WA, 98011
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Angus Henderson
Senior Scientist
(425) 482-1100
angus@aculight.com
Business Contact:
Charles Miyake
Vice-president
(425) 482-1100
scott.keeney@aculight.com
Research Institution:
n/a
Abstract
We propose here to develop a practical multi-species sensor for atmospheric gas concentrations and fluxes. The sensor will be based upon Tunable Diode Laser Absorption Spectroscopy (TDLAS), which is a highly sensitive and selective measurement technique. The practicality of this technique has up to now been limited by the use of cryogenically cooled diode lasers. In this work, a compact room temperature sensor will be enabled by a novel mid-infrared laser source developed by Aculight. The source is based upon direct nonlinear frequency conversion of near-infrared diode lasers, by an optical parametric oscillator (OPO). In phase I, we propose to demonstrate the multi-species sensor capability of the device by measurement of methane isotope ratios and formaldehyde concentrations. Potential detection sensitivities for relevant species within the 1 to 4um tuning range of the OPO will be analyzed. In phase II we will upgrade the power level, frequency control and device engineering to provide a deliverable source compatible with ultra-sensitive automated monitoring of multiple species.

* information listed above is at the time of submission.

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