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

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: N/A
Agency Tracking Number: NASA1475
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2001
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
11805 North Creek Parkway S. Suite 113, Bothell, WA, 98011
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Angus Henderson
 Senior Scientist
 (425) 482-1100
 angus@aculight.com
Business Contact
 Charles Miyake
Title: Vice-president
Phone: (425) 482-1100
Email: 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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