Complex Indices of Refraction for Water and Ice from Visible to Long Wavelengths
Abstract
The purpose of this study is to develop empirical relationships that model the complex refractive index of water and ice from visual to long wavelengths. Prior applications employing modeled complex indices of refraction for water and ice are presented. Complex index of refraction data is compiled from researchers who have taken measurements of reflectance and absorption in various spectral regions, and derived the real and imaginary parts, n and k, from these quantities. The spectral domain under investigation is divided into six subregions. These regions are: visible, near infrared, middle infrared, far infrared, microwave/radiowave, and longwave. The corresponding wavelength increments are: 0.4 micrometers to 0.7 micrometers, 0.7 micrometers to 4 micrometers, 4 micrometers to 50 micrometers, 50 micrometers to 1 millimeter, 1 millimeter to 100 meters and greater than 100 meters. The data are modeled as a function of wavelength and temperature. The temperature range modeled is representative of the troposphere. Water is investigated between 30 degrees Celsius and -10 degrees Celsius.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1996
- Accession Number
- ADA312143
Entities
People
- Mark L. Mesenbrink
Organizations
- Air Force Institute of Technology