Polarization lidar for the remote detection of aerosol...

Details Polarization lidar for the remote detection of aerosol... Polarization lidar for the remote detection of aerosol...

2006-07-21

2009-08-25

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

By particle light scattering

C356S341000

Reexamination Certificate

active

07580127

ABSTRACT:
A polarization lidar system capable of remotely identifying characteristics of atmospheric aerosol particles by transmitting a polarized beam of light and analyzing polarization characteristics of received backscatter is disclosed. The transmitter features high pulse energy to remotely identify aerosol particles with substantially one pulse. The transmitter employs a thin film plate polarizer and a Raman wavelength shifter to achieve eye-safe, single-plane linearly polarized energy. The transmit beam and receiver field of view are coaxial. The receiver employs a telescope, a collimating lens, and a beam splitter. The beam splitter splits the received backscatter into a single-plane polarized beam whose polarization plane is parallel to the plane of transmission and a single-plane polarized beam whose polarization plane is perpendicular to the plane of transmission. Each split beam is directed through separate focusing lenses onto separate detectors. The detector signals are amplified and processed to remotely determine atmospheric aerosol particle characteristics.

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