TY  - SER
AU  - Huang,Zhiming
AU  - Nikolaev,Nazar A.
AU  - Mamrashev,Alexander A.
AU  - Antsygin,Valery D.
AU  - Potaturkin,O.I.
AU  - Meshalkin,Arkady B.
AU  - Kaplun,A.B.
AU  - Lanskii,Grigory V.
AU  - Andreev,Yury M.
AU  - Huang,Jingguo
AU  - Ezhov,Dmitry M.
AU  - Svetlichnyi,Valerii A.
TI  - Phase matching in RT KTP crystal for down-conversion into the THz range
KW  - нелинейно-оптические кристаллы
KW  - фазовое согласование
KW  - дисперсия
KW  - Селмейера уравнения
KW  - статьи в журналах
N1  - Библиогр.: 15 назв
N2  - Dispersion of refractive index and absorption coefficients in flux-grown high-resistivity KTiOPO4 crystals between 0.2–2.5 THz are verified at room temperature by a THz-TDS. Measured dispersion components n x , n y and n z are approximated for the first time in the form of Sellmeier equations. Phase matching for down-conversion into the THz range under a visible and near IR pump is found possible only in the principle  plane by  and  types of three-wave interactions. Low frequency THz generation is favorable due to the low absorption coefficient down to 0.2 cm−1, below 0.5 THz
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000646053
ER  -