An Increase in the Signal-To-Noise Ratio of the Detected Terahertz Field in the CdTe Crystal With a Change in the Relative Angle between THz and IR Pulse Polarizations

A technique for optimizing the parameters of a standard time-resolved terahertz spectroscopy setup, which allows to increase the signal-to-noise ratio. Cadmium telluride (CdTe) cut along the (110) plane was used as a detecting crystal. A femtosecond solid-state ytterbium laser with a central radiati...

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Bibliographic Details
Published inBulletin of the Lebedev Physics Institute Vol. 49; no. 12; pp. 407 - 410
Main Authors Shumigai, V. S., Oparin, E. N., Tsypkin, A. N.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2022
Springer Nature B.V
Subjects
Cadmium tellurides
Crystals
Optical properties
Physics
Physics and Astronomy
Radiation sources
Signal to noise ratio
Ytterbium
pulsed radiation
polarization
terahertz radiation
electro-optic detection
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Summary:A technique for optimizing the parameters of a standard time-resolved terahertz spectroscopy setup, which allows to increase the signal-to-noise ratio. Cadmium telluride (CdTe) cut along the (110) plane was used as a detecting crystal. A femtosecond solid-state ytterbium laser with a central radiation wavelength of 1050 nm was chosen as the pump radiation source. A study of detecting properties of an electro-optical CdTe crystal for three angles between polarizations of probing and terahertz pulses showed that the maximum signal-to-noise ratio is achieved at an angle of 90° between polarizations.
ISSN:1068-3356
1934-838X
DOI:10.3103/S1068335622120090