Journal ArticleDOI
Thermal expansion data for eight optical materials from 60 K to 300 K
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TLDR
Coefficients of linear thermal expansion are reported, in the range 60 K to room temperature, for eight optical materials: polytran potassium chloride and Polytran calcium fluoride-Harshaw; chemical-vapor-deposited zinc sulfide and zinc selenide-Raytheon; germanium (single-crystal and polycrystal); crystalline magnesium fluoride, potassium dihydrogen phosphate (KDP), and lithium niobate-Harsaw.Abstract:
Coefficients of linear thermal expansion are reported, in the range 60 K to room temperature, for eight optical materials: Polytran potassium chloride and Polytran calcium fluoride—Harshaw; chemical-vapor-deposited (CVD) zinc sulfide and zinc selenide—Raytheon; germanium (single-crystal and polycrystal); crystalline magnesium fluoride, potassium dihydrogen phosphate (KDP), and lithium niobate—Harshaw. The last three are anisotropic crystals; thermal expansion was measured both parallel and perpendicular to the c axis.read more
Citations
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Journal ArticleDOI
Lithium niobate: Summary of physical properties and crystal structure
R. S. Weis,Thomas K. Gaylord +1 more
TL;DR: In this article, the important tensor physical properties and their mathematical descriptions are compiled and presented, including the essential features of the structure of lithium niobate, including its hexagonal and rhombohedral unit cells, and the principal (Cartesian) axes used in the description of the anisotropic properties are specified relative to the crystal structure.
Journal ArticleDOI
Temperature dependence of the absorption and refraction of Mg-doped congruent and stoichiometric LiNbO3 in the THz range
TL;DR: In this article, the absorption coefficient and the index of refraction of undoped and Mg-doped stoichiometric and congruent LiNbO3 crystals were determined for polarization parallel to the z axis in the far-infrared (FIR) 30−180-cm−1 frequency range for different Mgdoping levels and temperatures down to 10 K.
Proceedings Article
Temperature dependence of the absorption and refraction of Mg-doped congruent and stoichiometric LiNbO/sub 3/ in the THz range
TL;DR: In this article, the absorption coefficient and the index of refraction of Mg-doped LiNbO/sub 3/ crystals with different compositions were determined in the 30 - 200 cm-1 frequency range.
Journal ArticleDOI
Phononic Band Structure Engineering for High- Q Gigahertz Surface Acoustic Wave Resonators on Lithium Niobate
Linbo Shao,Smarak Maity,Lu Zheng,Lue Wu,Amirhassan Shams-Ansari,Young-Ik Sohn,Eric Puma,Mena N. Gadalla,Mian Zhang,Cheng Wang,Evelyn L. Hu,Keji Lai,Marko Loncar +12 more
TL;DR: In this paper, a high-quality SAW resonator using phononic band structure engineering is presented, which can be used for hybrid classical-quantum phonon networks with classical and quantum components.
Journal ArticleDOI
The low temperature electrical properties of some anisotropic crystals
TL;DR: In this paper, the principal complex dielectric constants have been studied at audio frequencies over the temperature range 5.5-380K for α-quartz, sapphire, magnesium fluoride, and calcite.
References
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Journal ArticleDOI
Thermal Expansion of Crystals with KH2PO4 Structure
TL;DR: In this article, the thermal expansion and room temperature lattice constants were determined for several phosphates and arsenates isomorphous to KH2PO4, and the anomalies in the ammonium compounds are larger by an order of magnitude than those for the ferroelectric alkali compounds.
Journal ArticleDOI
The low-temperature thermal expansion and vibrational properties of alkaline earth fluorides
A C Bailey,B Yates +1 more
TL;DR: In this paper, a quasi-harmonic approximation has been applied to calculate the maximum frequencies νD(n) of the Debye distributions having the same nth moments as the actual crystals, which display minima at n [similar, equals] -1 5, -2.0 and -2,5 for CaF2, SrF2 and BaF2.
Journal ArticleDOI
Thermal Expansion of Alkali Halides at Low Temperatures
B Yates,C H Panter +1 more
TL;DR: In this paper, the linear thermal expansions of LiF, NaCl, KCl and KBr were measured by a Fizeau interferometric method in the temperature range 20° to 270°K with an accuracy to 0.04 × 10-5 deg-1.
Journal ArticleDOI
X-ray study on thermal expansion of ferroelectric KH2PO4
TL;DR: In this article, the temperature variation of the lattice parameters of KK2PO4 at various temperatures between 23.4 and 169.3 °C have been measured by using an accurate X-ray method recently developed by the authors.
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