LBO: optical properties and potential for THz application /Y. M. Andreev, M. Naftaly, J. F. Molloy [et.al.]

Электронный ресурс
Другой Автор
Andreev, Yury M. 1946-
Molloy, John F.
Kokh, A. E.
Lanskii, Grigory V.
Svetlichnyi, Valerii A.
Losev, V. F.
Kononova, N. G.
Kokh, Konstantin A.
Naftaly, Mira
Источник
Laser physics letters 2015 Vol. 12, № 11. P. 115402 (1-3)
Аннотация
High quality lithium borate (LBO) samples cut along (1 0 0), (0 1 0) and (0 0 1) axes were studied by terahertz time-domain spectroscopy (THz TDS) between 0.2–3 THz. It was found that in the direction of crystallographic axis X the optical absorption coefficient is the lowest amongst all known anisotropic nonlinear crystals, and that birefringence is as large as 0.42. Dispersion equations for the entire transparency range of LBO were developed for the first time. Phase matching for down-conversion into the THz range was found to be possible. Phase matching availability, low optical loss in the transparency band, and high optical damage threshold make LBO one of the most promising nonlinear materials for THz generation.
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статьи в журналах
Резюме
High quality lithium borate (LBO) samples cut along (1 0 0), (0 1 0) and (0 0 1) axes were studied by terahertz time-domain spectroscopy (THz TDS) between 0.2–3 THz. It was found that in the direction of crystallographic axis X the optical absorption coefficient is the lowest amongst all known anisotropic nonlinear crystals, and that birefringence is as large as 0.42. Dispersion equations for the entire transparency range of LBO were developed for the first time. Phase matching for down-conversion into the THz range was found to be possible. Phase matching availability, low optical loss in the transparency band, and high optical damage threshold make LBO one of the most promising nonlinear materials for THz generation.