β-BBO, LBO, AND KTP Nonlinear Crystals as Sources of Millimeter-Wave Radiation

The refractive indices and the absorption coefficients of β-BBO, LBO, and KTP nonlinear optical crystals have been measured in the wavelength range of 0.5–3 mm at temperatures of 298 and 78 K. The absorption coefficients of all crystals at a wavelength of 1 mm do not exceed 3.5 cm –1 and fall with c...

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Veröffentlicht in:Russian physics journal 2020-10, Vol.63 (6), p.1025-1029
Hauptverfasser: Nikolaev, N. A., Lansky, G. V., Andreev, Yu. M., Ezhov, D. M., Krekov, M. G., Lisenko, A. A.
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container_end_page 1029
container_issue 6
container_start_page 1025
container_title Russian physics journal
container_volume 63
creator Nikolaev, N. A.
Lansky, G. V.
Andreev, Yu. M.
Ezhov, D. M.
Krekov, M. G.
Lisenko, A. A.
description The refractive indices and the absorption coefficients of β-BBO, LBO, and KTP nonlinear optical crystals have been measured in the wavelength range of 0.5–3 mm at temperatures of 298 and 78 K. The absorption coefficients of all crystals at a wavelength of 1 mm do not exceed 3.5 cm –1 and fall with cooling. The anisotropy of the absorption coefficients of crystals increases significantly with decreasing wavelength (2 mm, it almost disappears. Upon cooling, the absolute values of the absorption coefficients fall below 0.2 cm –1 . Based on the measured refractive indices, the collinear phase-matching curves are simulated numerically. The theoretical feasibility of IR (1.064 μm) laser radiation conversion into the millimeter-wave range is demonstrated.
doi_str_mv 10.1007/s11182-020-02132-1
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subjects Absorptivity
Anisotropy
Condensed Matter Physics
Cooling
Crystals
Hadrons
Heavy Ions
Infrared radiation
Lasers
Mathematical and Computational Physics
Millimeter waves
Nuclear Physics
Optical Devices
Optics
Phase matching
Photonics
Physics
Physics and Astronomy
Refractivity
Theoretical
title β-BBO, LBO, AND KTP Nonlinear Crystals as Sources of Millimeter-Wave Radiation
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