Laser system for detection and identification of chemical...

Optics: measuring and testing – For light transmission or absorption – Of fluent material

Reexamination Certificate

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C250S343000

Reexamination Certificate

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06943884

ABSTRACT:
A micro-doppler ladar comprising a tunable laser to identify an unknown constituent of a gaseous cloud or region at a safe distance from the cloud or region. The tunable laser produces a laser beam tunable over a range of different frequencies. Each frequency produces a different vibrational response in the constituent in the gaseous cloud when the cloud or region is illuminated by the laser beam. A micro-doppler ladar system then interprets a back scattered beam to determine the induced vibrations. The determined induced vibrations can then be compared to known vibrations stored in a look-up table to identify the specific constituent(s) in the cloud or region.

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patent: 6128081 (2000-10-01), White et al.
patent: 6230572 (2001-05-01), Pui et al.
F. J. Duarte, Multiple-prism grating tunable laser oscillators: ultra-brief introduction, http://www.opticsjournal.com/tutorial.htm, Dec. 17, 1999.

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