Open AccessNovel polarization-sensitive micropulse lidar measurement technique
Author(s) -
Connor Flynn,
Albert Mendoza,
Yunhui Zheng,
Savyasachee Mathur
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.002785
Subject(s) - depolarization ratio , optics , lidar , depolarization , polarization (electrochemistry) , circular polarization , mueller calculus , linear polarization , retarder , physics , materials science , polarimetry , scattering , laser , chemistry , medicine , endocrinology , microstrip , composite material
Polarization-sensitive detection of elastic backscattered light is useful for detection of cloud phase and depolarizing aerosols. The U.S. Department of Energy's Atmospheric Radiation Measurement Program has deployed micropulse lidar (MPL) for over a decade, but without polarized detection. Adding an actively-controlled liquid crystal retarder provides the capability to identify depolarizing particles by alternately transmitting linearly and circularly polarized light. This represents a departure from established techniques, which transmit exclusively linear polarization or exclusively circular polarization. Mueller matrix calculations yield simple relationships between the well-known linear depolarization ratio delta(linear), the circular depolarization ratio delta(circ), and this MPL depolarization ratio delta(MPL).