Measurement of the Dielectric Constant and Loss Tangent of Thallium Mixed Halide Crystals KRS-5 and KRS-6 at 95 GHz
نویسندگان
چکیده
The dielectric constants and loss tangents of KRS-5 and KRS-6 thallium halide mixed crystals have been measured at 95 GHz using both the shorted wavegnide (SWG) reflection method and the Fabry-Perot (F-P) transmission method on samples filfing standard WR-10 waveguide. The results—KRS-S C: = 31, tan8= 1.8x 10-2; KRS-6 c;= 29, tans = 2 X 10– z —agree reasonably well with a simple theoretical fit to the far-infrared Iatilce absorption of TfBr and TICI centered at about 1400 GHz. The dielectric samples were hot-pressed into copper wafers with dimensions matching WR10 wavegoide, and then machined and polished to obtain flat, parallel air-dielectric interfaces.
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