MSPI: The Multiangle Spectro-Polarimetric Imager
The Multiangle SpectroPolarimetric Imager (MSPI) is a new type of polarimetric camera jointly designed and fabricated by the University of Arizona and the Jet Propulsion Laboratory. Summary information is available in this project brochure.
A new, research-grade polarization ray trace engine, Polaris, built from the ground-up to incorporate polarization at a fundamental level. Summary information is available in this project brochure.
Mueller Matrix Polarimetry
Improvements to Mueller Matrix Imaging Polarimetry are explored and applied in myriad of technical projects ranging from beer bottle stress testing to NASA optical component measurement to pharmaceutical analysis and more.
Extreme control of the point spread function is necessary when attempting to directly image and characterize exoplanets. With requirements on contrast as small as 10-10 for earth-like planets, well designed coronagraphs are a necessity in the search for terrestrial planets that might support life. Polarization aberrations in the telescope and coronagraph system affect the shape of the vector-wave intensity point spread function. Our research seeks to describe polarization aberrations present in the HabEx system through polarization ray tracing, delves into their effect on the point spread function, and presents how these aberrations might limit the possible contrast of the system.
Design of an Imaging Polarimetry Spectrometer (IPS) in High-resolution Imaging Multiple-species Atmospheric Profiler (HIMAP)
A compact (6x12x18 cm) Imaging Polarimetry Spectrometer (IPS) is a subsystem of HiMAP, which will be capable of measuring O3 and NO2 concentrations in the troposphere with high resolution (4×4 km2). Polarization techniques locate atoms in the atmosphere as they scatter linearly polarized light. The concentration of gasses is measured by correlating spectral intensity with the characteristic absorption wavelengths of various species ranging from 300 – 500 nm.
Key components of the IPS investigated in this design include the Division of Amplitude Polarimeter (DoAP), Imaging Lens Array (ILA). Rigorous ray tracing and UV-Vis Mueller matrix spectropolarimeter analysis will be used to prove the polarimetric accuracy, spectral & spatial resolution, spectral SNR, and imaging capability of IPS. The 3-year performance period of this task is to advance the Technology Readiness Level (TRL) of the IPS from 2 to 4.