Compact LWIR polarimeter for cirrus ice properties

被引：6

作者：

Hart, Kira A. ^{[1
]}

Chipman, Russell A. ^{[1
]}

Wu, Dong L. ^{[2
]}

机构：

[1] Univ Arizona, 1630 E Univ Blvd, Tucson, AZ 85721 USA

[2] NASA, Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD USA

来源：

POLARIZATION: MEASUREMENT, ANALYSIS, AND REMOTE SENSING XIII | 2018年 / 10655卷

关键词：

channeled spectro-polarimeter; LWIR; ice clouds; remote sensing; Wollaston prism;

D O I：

10.1117/12.2305106

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A miniaturized long-wave InfraRed (LWIR) spectro-polarimeter is being developed as a prototype for the Compact Submm-Wave and LWIR Polarimeters (SWIRP) project. The polarimeter in development is a compact (20x20x40 cm) conical-scan instrument to measure the polarimetric radiation from ice cloud scattering at mm-submm (220 and 680 GHz) and IR (8.6, 11, and 12 m) bands. The LWIR polarimeter will provide a series of polarization measurements across the 8.5 - 12.5 micron band, measuring the full set of linear Stokes parameters (I, Q, U) as a function of wavelength. The spectro-polarimeter uses a combination of birefringent crystals, a Wollaston prism, a diffraction grating, and an uncooled microbolometer array to measure both the degree and angle of linear polarization across the spectral bandwidth by modulating the polarization flux in wavelength with a high order retarder.

引用

页数：6

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