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Affiliation of Author(s):理学院

Journal:JOURNAL OF NANOPHOTONICS

Key Words:PIMNT ferroelectrics refractive index optical transmission band gap

Abstract:Development work was conducted on ferroelectric materials that are widely used for optical modulation, light generation, optical filtering, and nanophotonic devices. Ferroelectric crystals with periodic variations in the second-order nonlinearity have been applied in laser frequency conversion, generation of entangled photons, and optical solitary wave devices. Here, we show electrical and optical characteristics of a ferroelectric crystal 0.25Pb(In1/2Nb1/2)O-3-0.42Pb(Mg1/3Nb2/3)O-3-0.33PbTiO(3) (short as PIMNT). The coercive field of PIMNT crystal with different orientation ranges from 4.9 to 5.8 kV/mm. Optical transmission and refractive indices of the crystal are investigated after being poled along different directions. The dispersion curves were fitted with Cauchy dispersion equations. The optical transmission of [011]-poled PIMNT single crystal is more than 65% above 0.5 mu m, which is much higher than that of [001] and [111] directions. Orientation dependence of transition energies is presented in detail. Direct band gap, indirect band gap, and phonon energy can be adjusted with different orientations. The coercive field of PIMNT crystal is much lower than that of LiNbO3 crystal (21 kV/mm). These results show that PIMNT single crystal is a promising candidate material in nanophotonics. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)

ISSN No.:1934-2608

Translation or Not:no

Date of Publication:2018-10-01

Co-author:Chen, Ziyun,Chen, Hongbing,Tong Wu,wjm,Gu xiaorong,Youwen Liu,Kongjun Zhu

Correspondence Author:hcj