Differences in ice and water LWIR spectral polarimetry at room temperature

Jaclyn A. John; Jeremy C. Parkinson; Meredith K. Kupinski

doi:10.1117/12.2678064

3 October 2023 Differences in ice and water LWIR spectral polarimetry at room temperature

Jaclyn A. John, Jeremy C. Parkinson, Meredith K. Kupinski

Proceedings Volume 12690, Polarization Science and Remote Sensing XI; 126900I (2023) https://doi.org/10.1117/12.2678064
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The University of Arizona Polarization Lab developed an Infrared Channeled Spectro-Polarimeter (IRCSP) to measure linear Stokes parameters with 1K polarimetric accuracy and 1μm average spectral resolution between 8-11μm. Emissivity and refractive index in this spectral band are known to depend upon water’s kinetic temperature and thermodynamic phase. In this work, the theoretical thermodynamic phase discrimination capabilities of spectral Long-Wave-Infrared (LWIR) polarimetry are demonstrated with IRCSP. In a room temperature laboratory environment, IRCSP measurements of melting ice are shown to depend on the view angle, wavelength, and thermodynamic phase. As the solid ice melted for 10 minutes, IRCSP measured a constant brightness temperature of 276K between the time-lapsed samples. The difference in the degree of linear polarization (DoLP) between solid and melted ice was 7% on average and peaked at 13% in the 9.5-10.5μm waveband. This observation is an example of enhanced sensitivity to thermodynamic phase change using LWIR polarimetry.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jaclyn A. John, Jeremy C. Parkinson, and Meredith K. Kupinski "Differences in ice and water LWIR spectral polarimetry at room temperature", Proc. SPIE 12690, Polarization Science and Remote Sensing XI, 126900I (3 October 2023); https://doi.org/10.1117/12.2678064

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available