Download Low Resolution (105 wavelength point) Data Files Here

Download High Resolution (4000 wavenumber point) Data Files Here

Description of Low Resolution Files:

betasic.dat is tab delimited text of the optical constants (real and imaginary indices of refraction) for the (3C-) β-SiC chemical vapor deposited (CVD) wafer. The left column is wavelength (μm); the middle column is n, or the real part of the complex refractive index; the right column is k, or the imaginary part of the complex refractive index.

grysicpa.dat is tab delimited text of the optical constants for gray (6H-) α-SiC powder, extraordinary ray (E parallel to c). The left column is wavelength (μm); the middle column is n, or the real part of the complex refractive index; the right column is k, or the imaginary part of the complex refractive index.

grysicpe.dat is tab delimited text of the optical constants for gray (6H-) α-SiC powder, ordinary ray (E perpendicular to c). The left column is wavelength (μm); the middle column is n, or the real part of the complex refractive index; the right column is k, or the imaginary part of the complex refractive index.

moisicpa.dat is tab delimited text of the optical constants for a moissanite gemstone (6H-SiC), extraordinary ray (E parallel to c). The left column is wavelength (μm); the middle column is n, or the real part of the complex refractive index; the right column is k, or the imaginary part of the complex refractive index.

moisicpe.dat is tab delimited text of the optical constants for a moissanite gemstone (6H-SiC), ordinary ray (E perpendicular to c). The left column is wavelength (μm); the middle column is n, or the real part of the complex refractive index; the right column is k, or the imaginary part of the complex refractive index.

Description of High Resolution Files:

betaSiC_refl.txt is tab delimited text of the laboratory reflectance spectrum (λ = 2.5-988 μm) of the (3C-) β-SiC chemical vapor deposited (CVD) wafer. The left column is wavenumber (units: 1/cm) and the right column is reflectance.

betaSiC_nk_1osc_hires.txt is tab delimited text of the classical dispersion analysis corresponding to betaSiC_refl.txt (assumes 1 oscillator is required to fit the reflectance data). From left to right, columns are: frequency, real part of dielectric function, imaginary part of dielectric function, imaginary part of 1/dielectric function, reflectivity (0-1), absorption coefficient (1/cm), n, k, conductivity. Only the frequency column has units (1/cm).

grayalphaSiC_E_par_c_refl.txt is tab delimited text of the laboratory reflectance spectrum (λ = 2.5-988 μm) of gray (6H-) α-SiC powder, extraordinary ray. The left column is wavenumber (units: 1/cm) and the right column is reflectance.

grayalphaSiC_E_par_c_nk_1osc_hires.txt, grayalphaSiC_E_par_c_nk_4osc_hires.txt are tab delimited text of the classical dispersion analysis corresponding to grayalphaSiC_E_par_c_refl.txt (assumes 1 or 4 oscillators are required to fit the reflectance data). From left to right, columns are: frequency, real part of dielectric function, imaginary part of dielectric function, imaginary part of 1/dielectric function, reflectivity (0-1), absorption coefficient (1/cm), n, k, conductivity. Only the frequency column has units (1/cm).

grayalphaSiC_E_perp_c_refl.txt is tab delimited text of the laboratory reflectance spectrum (λ = 2.5-988 μm) of gray (6H-) α-SiC powder, ordinary ray. The left column is wavenumber (units: 1/cm) and the right column is reflectance.

grayalphaSiC_E_perp_c_nk_1osc_hires.txt, grayalphaSiC_E_perp_c_nk_2osc_hires.txt is tab delimited text of the classical dispersion analysis corresponding to grayalphaSiC_E_perp_c_refl.txt (assumes 1 or 2 oscillators are required to fit the reflectance data). From left to right, columns are: frequency, real part of dielectric function, imaginary part of dielectric function, imaginary part of 1/dielectric function, reflectivity (0-1), absorption coefficient (1/cm), n, k, conductivity. Only the frequency column has units (1/cm).

moissanite_E_par_c_refl.txt is tab delimited text of the laboratory reflectance spectrum (λ = 2.5-988 μm) of the moissanite gemstone (6H-SiC), extraordinary ray. The left column is wavenumber (units: 1/cm) and the right column is reflectance.

moissanite_E_par_c_nk_1osc_hires.txt is tab delimited text of the classical dispersion analysis corresponding to moissanite_E_par_c_refl.txt (assumes 1 oscillator is required to fit the reflectance data). From left to right, columns are: frequency, real part of dielectric function, imaginary part of dielectric function, imaginary part of 1/dielectric function, reflectivity (0-1), absorption coefficient (1/cm), n, k, conductivity. Only the frequency column has units (1/cm).

moissanite_E_perp_c_refl.txt is tab delimited text of the laboratory reflectance spectrum (λ = 2.5-988 μm) of the moissanite gemstone (6H-SiC), ordinary ray. The left column is wavenumber (units: 1/cm) and the right column is reflectance.

moissanite_E_perp_c_nk_1osc_hires.txt, moissanite_E_perp_c_nk_4osc_hires.txt is tab delimited text of the classical dispersion analysis corresponding to moissanite_E_perp_c_refl.txt (assumes 1 oscillator is required to fit the reflectance data). From left to right, columns are: frequency, real part of dielectric function, imaginary part of dielectric function, imaginary part of 1/dielectric function, reflectivity (0-1), absorption coefficient (1/cm), n, k, conductivity. Only the frequency column has units (1/cm).

© 2008. All rights reserved.

Karly M. Pitman

Department of Earth & Planetary Sciences

Washington University, St. Louis, Missouri, USA