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Detection range enhancement using circularly polarized light in scattering environments for infrared wavelengths

Journal Article · · Applied Optics
DOI:https://doi.org/10.1364/AO.54.002266· OSTI ID:1184576
 [1];  [2];  [2];  [3]
  1. Univ. of Arizona, Tucson, AZ (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Univ. of Arizona, Tucson, AZ (United States)

We find for infrared wavelengths there are broad ranges of particle sizes and refractive indices that represent fog and rain where the use of circular polarization can persist to longer ranges than linear polarization. Using polarization tracking Monte Carlo simulations for varying particle size, wavelength, and refractive index, we show that for specific scene parameters circular polarization outperforms linear polarization in maintaining the intended polarization state for large optical depths. This enhancement with circular polarization can be exploited to improve range and target detection in obscurant environments that are important in many critical sensing applications. Specifically, circular polarization persists better than linear for radiation fog in the short-wave infrared, for advection fog in the short-wave infrared and the long-wave infrared, and large particle sizes of Sahara dust around the 4 micron wavelength.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1184576
Alternate ID(s):
OSTI ID: 1222289
Report Number(s):
SAND--2014-19268J; 540819
Journal Information:
Applied Optics, Journal Name: Applied Optics Journal Issue: 9 Vol. 54; ISSN 0003-6935; ISSN APOPAI
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Polarimetric dehazing utilizing spatial frequency segregation of images journal January 2015
Enhancing underwater optical imaging by using a low-pass polarization filter journal January 2019
An Image-Processing Method for Extracting Kinematic Characteristics of Droplets during Pulsed GMAW journal December 2019
Broad-Band Transmission Characteristics of Polarizations in Foggy Environments journal June 2019