Photoacoustic Sensor for High-sensitivity Measurement of Water Vapor

Award Information
Agency:
Department of Commerce
Amount:
$94,709.00
Program:
SBIR
Contract:
WC133R10CN0209
Solitcitation Year:
1
Solicitation Number:
NOAA 2010-1
Branch:
N/A
Award Year:
2010
Phase:
Phase I
Agency Tracking Number:
10-52
Solicitation Topic Code:
8.2.4
Small Business Information
Masstech, Inc.
6992 COLUMBIA GATEWAY DR, Suite 200, COLUMBIA, MD, 21046
Hubzone Owned:
N
Woman Owned:
Y
Socially and Economically Disadvantaged:
N
Duns:
123310083
Principal Investigator
 Wenhui Shi
 Optical Scientist
 (443) 539-1736
 shi@sesi-md.com
Business Contact
 Richard Lee
Title: Cheif Financial Officer
Phone: (443) 539-1742
Email: rlee@apmaldi.com
Research Institution
N/A
Abstract

We propose to build a compact, rugged airborne laser photoacoustic spectrometric (LPAS) sensor based on a tunable mid-IR diode laser for continuous, real-time measurements of water vapor, and perform field tests to qualify it for dynamic airborne in situ monitoring of upper troposphere water vapor. An innovative diode laser frequency locking technique developed by us will be utilized for tunable diode laser wavelength stabilization. Our sensor will be based on our laboratory LPAS instrument (at technology readiness level TRL-4) that has already demonstrated successful detections of water vapor, chemicals, alcohols, and CWAs. It utilizes a tunable infrared laser (interband cascade or quantum cascade), a high sensitivity photoacoustic cell with an air sampler and an efficient algorithm to rapidly complete high sensitivity, selective multi-component measurements in under a minute. In Phase I we will carry out extensive laboratory tests of LPAS and a comprehensive analysis of the sensor performance to determine the limit of detection (LOD) and receiver operating characteristic (ROC) curves for the sensor and establish its feasibility. A rugged and portable prototype sensor (TRL-5) will be built in Phase II. It will be field tested in aircraft (TRL-6) and characterize the sensor.

* information listed above is at the time of submission.

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