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  • IR Absorption in Sapphire
    Investigations of the optical characteristics of lattice defects make it possible to draw definite conclusions on both nature and structure of the defects. Absorption bands which correspond to valence oscillations of the OH group have been detected in the spectra of nonannealed corundum crystals
  • UV-Biometer - A Broad Band Instrument Complementing Ozone Measurement With Ground Based UV Exposure
    . Figure 1. Solar radiation at sea level, zero albedo, 40°SZA, calculated from model. (Green, 1979). The main absorption bands of Ozone (Hartley and Huggins bands) fall into the region of. 200-320 nm and are responsible for virtual elimination of wavelengths shorter than 295nm. from the UV reaching
  • Hydrogen in Sapphire - Part 1
    to plastic deformation. Hydrogen penetration was examined using infrared absorption measurements of O-H bond vibrations, which revealed two kinds of hydrogen defects. In single crystals, defects are characterized by sharp O-H absorption bands assigned to interstitial protons. Hydrogen impurities
  • High-Performance Wavelength-Locked Diode Lasers (.pdf)
    laser level of Nd:YAG solid state lasers at 885nm and the 1532nm absorption band of Er:YAG solid state lasers, though taking full advantage of these configurations requires wavelength-locked pump sources. nLIGHT offers a wide variety of wavelength-locked diode laser products based on external
  • Airborne Detection of Gas Leaks from Transmission Pipelines by Using a Laser System Operating in Visual, Near-IR, and Mid-IR Wavelength Bands
    which. passes in the atmosphere through a gas plume and after being scattered by the ground surface is captured. by an IR detector. The pulsed laser diode operates at the wavelength near 1650 nm (1.65 µm) that. corresponds to one of the strong methane absorption lines with the pulse duration 1 ms
  • Soluble Narrow Band Gap and Blue Propylenedioxythiophene-Cyanovinylene Polymers
    spectrometer, elemental analysis, and melting point. Polymer 1H NMR spectra. were recorded on a 500 MHz Inova 500. Polymer GPC was performed on two 300 x 7.5 mm Polymer Laboratories PLGel 5. µM mixed-C columns with Waters Associates liquid chromatography 2996 photodiode. array absorption. Polymer
  • Sapphire Luminescence - F Centers
    On the basis of an extensive study of the optical behavior of neutron-bombarded crystalline sapphire we proposed that oxygen vacancies with one electron (F centers) and two electrons (F centers) are responsible for the 4.8 and 6.1 eV absorption bands, respectively. This defect model has been
  • AQ6375 Optical Spectrum Analyzer for Long Wavelength Band
    dioxide). In order to small concentrations of these gas molecules with high sensitivity, laser absorption spectroscopy technology is gaining attention and is under active development.

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