Achromatic prism retarder for use in polarimetric sensors.
نویسنده
چکیده
The optical resting point of a polarimetric sensor is normally reached by using a fixed retarder plate. It is shown that this retarder plate can be omitted by using 90 degrees prisms of selected glass materials. The sensitivity of the prism retarder toward changes in wavelength and temperature is mathematically analyzed, and it is shown how the stability of the retarder system is influenced by the selection of materials and production tolerances on prism angles. A practical example is given.
منابع مشابه
Achromatic angle-insensitive infrared quarter-wave retarder based on total internal reflection at the Si-SiO2 interface.
An achromatic infrared (lambda = 1.2-4 microm), Si-prism quarter-wave retarder (QWR) is described that uses total internal reflection at a buried Si-SiO2 interface at an angle of incidence phi near 33 degrees, where deltaDelta/deltaphi = 0. The retardance delta deviates from 90 degrees by < +/- 2 degrees within a field of view of +/- 10 degrees (in air) over the entire bandwidth. Because the Si...
متن کاملUV-SWIR Achromatic Quarter Wave Retarder for the Multiangle Spectropolarimetric Imager (MSPI)
We describe the design, fabrication, and testing of an achromatic, athermalized quarterwave retarder, a key component for the Multiangle Spectro-Polarimetric Imager (MSPI), which is a candidate for the Aerosol-Cloud-Ecosystem (ACE) mission. The desired wavelength range of the instrument encompasses the UV, visible, near IR, and shortwave IR, extending from 355 nm to 2130 nm, with polarimetric c...
متن کاملOptimal achromatic wave retarders using two birefringent wave plates.
Two plates of different birefringence material can be combined to obtain an achromatic wave retarder. In this work, we achieve a correction for the overall retardation of the system that extends the relation to any azimuth. Current techniques for the design of achromatic wave retarders do not present a parameter that characterizes its achromatism on a range of wavelengths. Thus, an achromatic d...
متن کاملError Analysis for Dual-beam Optical Linear Polarimetry
In this paper we present an error analysis for polarimetric data obtained with dual-beam instruments. After recalling the basic concepts, we introduce the analytical expressions for the uncertainties of polarization degree and angle. These are then compared with the results of Monte-Carlo simulations, which are also used to briefly discuss the statistical bias. Then we approach the problem of b...
متن کاملAchromatic N-prism beam expanders: optimal configurations.
In this paper, we calculate optimal prism configurations for achromatic N-prism beam expanders of a single material; we argue that for moderate to high magnifications, that is, M > [2 1(2N-1 -1)]N, the upup ... up-down configuration is generally optimal, in the sense that it maximizes the transmission for given magnification. We also derive exact expressions for the incidence and apex angles th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Applied optics
دوره 30 4 شماره
صفحات -
تاریخ انتشار 1991