Patent ID: 7531349
Filing Date: 2009-05-12
Classification: G01N,Y10S

Abstract:
1. A standoff bioagent detection system comprising: a detector to detect a fluorescence level; and a controller configured to initially cause a plurality of laser diodes to generate a range of ultraviolet wavelengths; wherein when the detector detects that a fluorescence level of an aromatic protein resulting from the range ultraviolet wavelengths exceeds a threshold, the controller is further configured to: address selected pairs of the laser diodes to alternately generate first and second ultraviolet wavelengths by sequentially pulsing the selected pairs in rapid succession, both the first and second wavelengths selected to fluoresce the detected aromatic protein; and resolve in time and separately correlate detected fluorescence levels resulting from sequential transmission of the first and second ultraviolet wavelengths to determine a differential absorption level, wherein the second ultraviolet wavelength and the first ultraviolet wavelength are separated by no more than approximately five nanometers.