EKHI
The open database of optical and radiative data
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Publications: 167 Total entries: 1251
Infrared lattice reflection spectra of III-V compound semiconductors
M. Hass, B. W. Henvis
The fundamental lattice reflection band of InSb, InAs, GaSb and GaAs has been measured at liquid helium temperature with a grating spectrometer. By comparing the observed spectrum with that calculated using a single classical dispersion oscillator, the following values of …
4 entries
INDIUM PHOSPHIDE InP: Normal spectral reflectance
GaSb INTERMETALLIC COMPOUND: Normal spectral reflectance
INDIUM ARSENIDE InAs: Normal spectral reflectance
Far infrared optical properties of indium antimonide
R. B. Sanderson
The reflectivity of indium antimonide has been measured between 20 and 200 cm-1 at temperatures of 100 and 300°K on an interferometric modulation spectrometer. Classical dispersion formulae for the free carrier absorption and the lattice vibrations have been fitted to …
2 entries
Determination of optical constants and carrier effective mass of semiconductors
W. G. Spitzer, H. Y. Fan
By using reflectivity and absorption measurements in the region 5 to 35 micron, the effect of free carriers on the optical constants has been determined for n- and p-type germanium, silicon, and indium antimonide, and for n-type indium arsenide. The …
6 entries
PROPERTIES OF SOME VYCOR‐BRAND GLASSES
Martin E. Nordberg
Physical and chemical properties are discussed for Vycor‐brand 96% silica glasses prepared from glasses of lower silica content by a leaching process, and a brief résumé of this process is given. The intermediate porous glass and a translucent or white …
2 entries
A beam condenser for infrared spectrophotometers
Richard C. Brandt
The design and performance of a beam condenser for ir spectrophotometers such as the Beckman model IR-11 is described. The instrument has an image size of 4 mm X 8 mm and permits the use of samples mounted in the …
1 entries
Thermal Radiation Characteristics of Some Glasses
Howard O. Mcmahon
The emissivity, reflectivity, and transmissivity have been studied for a number of glasses throughout the wave‐length region 2.2 to μ, and through a temperature range of 500° to 1500°F. In general it is found that, although the spectral emissivity varies …
20 entries
VYCOR GLASSES: Hemispherical spectral transmittance, Normal spectral reflectance, Normal spectral emittance
BOROSILICATE GLASSES: Hemispherical spectral transmittance, Normal spectral reflectance, Normal spectral emittance
PYREX: Angular spectral reflectance, Hemispherical spectral transmittance, Normal spectral reflectance, Normal spectral emittance
Photoconductivity in lead chloride and lead bromide
J. F. Verwey, N. G. Westerink
Photoconductivity measurements on PbCl2 and PbBr2 at liquid nitrogen temperature are described. It was found that the holes are the dominant mobile charge carriers in these crystals. The range per unit field was estimated to be 1.2 × 10-4 cm2/V …
4 entries
MISCELLANEOUS CHLORIDES: Normal spectral transmittance
LEAD DIODIDE PbI₂: Normal spectral transmittance
Optical properties of zinc telluride in the infrared
Shin Ichiro Narita, Hiroyuki Harada, Keigo Nagasaka
ZnTe crystals were grown in a high pressure Tammann Furnace and doped with various kinds of impurities up to a carrier concentration of 8×10 18 cm -3 . The transmission and reflection spectra of undoped ZnTe crystals were measured …
10 entries
ZINC TELLURIDE ZnTe: Normal spectral reflectance, Normal spectral transmittance
Band structure of bismuth telluride, bismuth selenide and their respective alloys
D. L. Greenaway, G. Harbeke
The dominant features of the band structure have been analysed by studying the fundamental reflectivity over the energy range 0.1-12 eV and the absorption over the range 0.1-1.5 eV. Using linearly polarized light, results have been obtained for different orientations …
8 entries
BISMUTH TRITELLURIDE Bi₂Te₃: Normal spectral reflectance
Optical properties and band structure of wurtzite-type crystals and rutile
Manuel Cardona, Gunther Harbeke
The fundamental reflectivity of several optically anisotropic materials (hexagonal ZnS, CdS, CdSe, and rutile) has been measured at room temperature with linearly polarized light of wavelength longer than 1100 Å. Measurements were performed with the electric vector parallel and perpendicular …
5 entries
ZINC SULFIDE ZnS: Normal spectral reflectance