Title :
Microwave dielectric properties of some laser crystals
Author :
Levchenko, Alexander N. ; Tyutyunnik, Vitaliy B. ; Pritula, Igor M. ; Kosinova, Anna V. ; Shekhovtsov, Alexey N. ; Babarika, Anna L. ; Govina, Kirill O. ; Babarika, Leonid I. ; Chizhov, Valeriy V. ; Nikolov, Oleg T. ; Kosmyna, Myron B.
Author_Institution :
V.Karazin Kharkiv Nat. Univ., Kharkiv
fDate :
Sept. 29 2008-Oct. 4 2008
Abstract :
The relative dielectric permittivity and the dielectric loss tangent of KH2PO4, KD2PO4, PbWO4, PbMoO4, Al2O3, LiF and KCl single crystals used in laser technique are investigated with the help of the waveguide-dielectric resonances at frequencies of 7 - 12 GHz. The effect of gamma-irradiation with doses up to 2middot105 Gy on the characteristics of crystals is determined . It is observed that pure KH2PO4 and PbMoO4 crystals have high radiation hardness. It is founded that PbWO4 and PbMoO4 single crystals have low microwave losses. It allows using them as high quality resonators, filters and other elements of waveguide technique. The microwave dielectric properties of the crystals measured at 25degC are given.
Keywords :
crystals; dielectric losses; dielectric materials; gamma-rays; permittivity; solid lasers; waveguides; Al2O3; KCl; KD2PO4; KH2PO4; LiF; PbMoO4; PbWO4; dielectric loss tangent; frequency 7 GHz to 12 GHz; gamma irradiation effects; laser crystals; microwave dielectric property; microwave loss; relative dielectric permittivity; single crystals; temperature 25 C; waveguide dielectric resonances; waveguide technique; Crystals; Dielectric losses; Kirchhoff´s Law; Masers; Microwave filters; Permittivity; Resonance; Resonant frequency; Resonator filters; Waveguide lasers; γ-irradiation; dielectric loss tangent; dielectric permittivity; laser crystals; waveguide-dielectric resonance;
Conference_Titel :
Advanced Optoelectronics and Lasers, 2008. CAOL 2008. 4th International Conference on
Conference_Location :
Crimea
Print_ISBN :
978-1-4244-1973-9
Electronic_ISBN :
978-1-4244-1974-6
DOI :
10.1109/CAOL.2008.4671917
