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

fYear

2008

fDate

Sept. 29 2008-Oct. 4 2008

Firstpage

413

Lastpage

415

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CAOL.2008.4671917

Filename

4671917