Physical Approaches to Designing a Two-Cascade Terahertz Laser Generating Difference-Frequency Radiation in a Nonlinear Optical ZnGeP<sub>2</sub> Crystal

Abstract

An optical layout of a two-cascade frequency converter of the mid-IR laser radiation into the terahertz (THz) radiation is proposed. In the first stage it is assumed to convert the Tm:YLF-laser frequency in a Cr⁺²:ZnSe polycrystal into the radiation with the wavelength ~2–3 μm. The second cascade can be presented as a parametric conversion of the frequencies of two laser sources operating in the ~2–3 μm range into the THz radiation via the difference-frequency mixing in a nonlinear optical ZnGeP₂ crystal. The estimates of the terahertz output signal are reported.

Original language	English
Pages (from-to)	1980-1986
Number of pages	7
Journal	Russian Physics Journal
Volume	60
Issue number	11
DOIs	https://doi.org/10.1007/s11182-018-1311-z
Publication status	Published - 1 Mar 2018
Externally published	Yes

Keywords

difference frequency generator
nonlinear-parametric frequency conversion
THz range

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1007/s11182-018-1311-z

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title = "Physical Approaches to Designing a Two-Cascade Terahertz Laser Generating Difference-Frequency Radiation in a Nonlinear Optical ZnGeP2 Crystal",

abstract = "An optical layout of a two-cascade frequency converter of the mid-IR laser radiation into the terahertz (THz) radiation is proposed. In the first stage it is assumed to convert the Tm:YLF-laser frequency in a Cr+2:ZnSe polycrystal into the radiation with the wavelength ~2–3 μm. The second cascade can be presented as a parametric conversion of the frequencies of two laser sources operating in the ~2–3 μm range into the THz radiation via the difference-frequency mixing in a nonlinear optical ZnGeP2 crystal. The estimates of the terahertz output signal are reported.",

keywords = "difference frequency generator, nonlinear-parametric frequency conversion, THz range",

author = "Gribenyukov, {A. I.} and Dyomin, {V. V.} and Polovtsev, {I. G.} and Yudin, {N. N.}",

year = "2018",

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doi = "10.1007/s11182-018-1311-z",

language = "English",

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T1 - Physical Approaches to Designing a Two-Cascade Terahertz Laser Generating Difference-Frequency Radiation in a Nonlinear Optical ZnGeP2 Crystal

AU - Gribenyukov, A. I.

AU - Dyomin, V. V.

AU - Polovtsev, I. G.

AU - Yudin, N. N.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - An optical layout of a two-cascade frequency converter of the mid-IR laser radiation into the terahertz (THz) radiation is proposed. In the first stage it is assumed to convert the Tm:YLF-laser frequency in a Cr+2:ZnSe polycrystal into the radiation with the wavelength ~2–3 μm. The second cascade can be presented as a parametric conversion of the frequencies of two laser sources operating in the ~2–3 μm range into the THz radiation via the difference-frequency mixing in a nonlinear optical ZnGeP2 crystal. The estimates of the terahertz output signal are reported.

AB - An optical layout of a two-cascade frequency converter of the mid-IR laser radiation into the terahertz (THz) radiation is proposed. In the first stage it is assumed to convert the Tm:YLF-laser frequency in a Cr+2:ZnSe polycrystal into the radiation with the wavelength ~2–3 μm. The second cascade can be presented as a parametric conversion of the frequencies of two laser sources operating in the ~2–3 μm range into the THz radiation via the difference-frequency mixing in a nonlinear optical ZnGeP2 crystal. The estimates of the terahertz output signal are reported.

KW - difference frequency generator

KW - nonlinear-parametric frequency conversion

KW - THz range

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