High Sensitivity Rugged Array Detectors for Field Deployed Instruments: Low-Light Level Camera for Laser-Induced Breakdown Spectroscopy (LIBS) and Ram

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$729,227.00
Award Year:
2008
Program:
SBIR
Phase:
Phase II
Contract:
W911QX-08-C-0075
Agency Tracking Number:
A062-065-0929
Solicitation Year:
2006
Solicitation Topic Code:
A06-065
Solicitation Number:
2006.2
Small Business Information
B & W TEK, INC.
#19 Shea Way, Suite 301, Newark, DE, 19713
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
964792485
Principal Investigator:
Sean Wang
Chief Technical Officer
(302) 368-7824
swang@bwtek.com
Business Contact:
Pei Tzeng
Account Manager
(302) 368-7824
peipei@bwtek.com
Research Institution:
n/a
Abstract
Laser-induced breakdown spectroscopy (LIBS) and Raman spectroscopy are developing rapidly for chemical and biochemical sensing applications. There is an urgent need for high-sensitivity detectors so as to minimize sample quantity and maximize detection range from the source. In most field-deployable spectrometers, a photo-detector array is used for analyzing the spectral contents. The sensitivities of the CCD or CMOS arrays are typically not high enough, and an expensive and short-lived ICCD has to be used. We proposed in Phase I the world’s first nano-tech semiconductor image intensifier and low-light-level camera design. During Phase I, we also built the world’s first femto-Amp femto-Watt electro-optical measurement system, fabricated the world’s highest sensitivity semiconductor photo-detectors, and precisely characterized them to have achieved > 100 x higher sensitivity than avalanche photodiodes. Our Phase I experimental results well exceeded our original expectations. Phase II will see the full specification development of the proposed image intensifier, low-light-level camera and high-sensitivity LIBS systems. The prototype LIBS spectrometer will cover 200 – 1,000 nm range with 0.1 nm resolution. It will have its detection limit as low as 1/1,000 of the minimum detectable amount of a similar system with CCD. We will continue into production in Phase III.

* information listed above is at the time of submission.

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