Millimetre-wave range optical properties of BIBO N. A. Nikolaev, A. A. Mamrashev, V. D. Antsygin [et al.]
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ArticleContent type: Текст Media type: электронный Subject(s): оптические свойства | миллиметровый диапазон | кристаллы | фазовый синхронизм | коэффициент поглощения | оптическая накачка лазерным излучениемGenre/Form: статьи в журналах Online resources: Click here to access online
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Journal of Physics: Conference Series Vol. 2067. P. 012011 (1-4)Abstract: We present the thorough studies of optical properties of BiB3O6 (BIBO) crystal in the millimeter-wave (subterahertz) range. We observe a large birefringence Δn = nZ −nX = 1.5 and the values of absorption coefficients of all three axes to be less than 0.5 cm−1 at the frequency of 0.3 THz. The difference from visible range in angle ϕ between the dielectric axis z and crystallophysical axis X is found to be more than 6°. The simulated phase-matching curves in the xz plane of the crystal show the optimal value of the angle θ to be around 25.5°±1° for an efficient millimeter-wave generation under the pump of 1064 nm laser radiation.
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We present the thorough studies of optical properties of BiB3O6 (BIBO) crystal in the millimeter-wave (subterahertz) range. We observe a large birefringence Δn = nZ −nX = 1.5 and the values of absorption coefficients of all three axes to be less than 0.5 cm−1 at the frequency of 0.3 THz. The difference from visible range in angle ϕ between the dielectric axis z and crystallophysical axis X is found to be more than 6°. The simulated phase-matching curves in the xz plane of the crystal show the optimal value of the angle θ to be around 25.5°±1° for an efficient millimeter-wave generation under the pump of 1064 nm laser radiation.
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