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LETTERS TO THE EDITOR: Parametric conversion of infrared radiation in a GaSe crystal
Radiations emitted by CO and CO2 lasers were converted parametrically in a nonlinear GaSe crystal by mixing the radiation of one of these lasers with the radiation emitted by a YAG:Nd3+ laser. TheExpand
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On a Possibility to Form Small Crystallites of Layered Gallium Selenide via Ultrasonic Treatment
A powder as well as single crystals of layered gallium selenide (GaSe) in methanol were sonicated under ambient conditions. After filtration or centrifugation we obtained a mixture which containedExpand
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BRIEF COMMUNICATIONS: Investigation of linear and nonlinear optical properties of GaSxSe1-x crystals
The refractive index and the birefringence of GaSxSe1–x crystals were determined in the range 0.63–20 μ. Generation of the second harmonic of CO2 laser radiation was used to determine nonlinearExpand
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Corrected infrared Sellmeier coefficients for gallium selenide
We have measured the room-temperature refractive indices of GaSe throughout the 0.7–1.4 and 2.4–5μm ranges using the minimum-deviation method of light through a prism with polarization eitherExpand
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Optical properties and vertical extension of aged ash layers over the Eastern Mediterranean as observed by Raman lidars during the Eyjafjallajökull eruption in May 2010
Abstract The vertical extension and the optical properties of aged ash layers advected from the Eyjafjallajokull volcanic eruption over the Eastern Mediterranean (Greece and Turkey) are presented forExpand
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Second-Harmonic Generation in GaS Crystals
Abstract Second-harmonic generation in the layered semiconductor GaS excited with the wavelength λ = 1579 nm is investigated with the Maker fringe technique. It is shown that the second-harmonicExpand
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The Influence of Hydrostatic Pressure on the Electrical Conductivity and Optical Properties of Chain‐Layered TlInSe2 and TlInSe2–TlInS2 Solid Solutions
The influence of hydrostatic pressure on the electrical conductivity of TlInSe2 and on the optical transmission spectra of TlInSe1.4S0.6 crystals grown by the Bridgman method are reported for theExpand
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Succession of the low temperature phase transitions in TlInS2 crystals
Abstract Two additional incommensurate phase transitions (PT's) at T i = 206 K and T tr = 79 K were observed in TlInS 2 crystals. Peculiarities of the temperature behaviour of the dielectricExpand
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