Case-Study Estimation of Dielectric Response Functions for NIR-SWIR Absorbing Dyes by Inverse Analysis of Diffuse Reflectance

Abstract

This study describes a Kramers-Kronig analysis of diffuse reflectance from NIR/SWIR-absorbing dyes on cotton-fabric substrates for estimating dielectric response functions. The calculated response functions provide estimates of the dielectric response characteristics. Since the Kramers-Kronig analysis is applied to diffuse reflectance and not to specular reflectance from uniform bulk material surfaces, it is not assumed as an exact determination of the material permittivity functions. However, the estimated response functions can support the construction of approximate effective medium models capable of estimating reflectance from dyed fabrics. A sensitivity analysis is presented that explores the impact of Kramers-Kronig integration-range incompleteness by examining the influence of lower/upper wavelength smoothing and extrapolation techniques.

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Document Details

Document Type
Technical Report
Publication Date
May 24, 2022
Accession Number
AD1169814

Entities

People

  • Rachel Viger
  • Samuel G. Lambrakos
  • Scott A. Ramsey
  • Troy Mayo

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Acquisition
  • Bulk Materials
  • Case Studies
  • Composite Materials
  • Department Of Defense
  • Diffraction
  • Dyes
  • Electronic Warfare
  • Extrapolation
  • Light Scattering
  • Materials
  • New York
  • Optical Properties
  • Optics
  • Reflectance
  • Refraction
  • Refractive Index
  • Scattering
  • Sensitivity
  • Spectra
  • Spectroscopy
  • Substrates

Readers

  • Chemistry (specifically Chemical Fluorescence)
  • Computer Vision.
  • Systems Analysis and Design