2 January 2018 Orientation dependence of dispersion and band gap of PIMNT single crystals
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As piezoelectric materials, optical properties of xPb(In1/2Nb1/2)O3–(1-x-y)Pb(Mg1/3Nb2/3)O3–yPbTiO3 single crystals were not perfectly known. Here refractive indices and optical transmission of 0.25Pb(In1/2Nb1/2)O3–0.42Pb(Mg1/3Nb2/3)O3– 0.33PbTiO3 (PIMNT) single crystal are investigated after poled along different directions. Cauchy dispersion equations of the refractive indices were obtained by least square fitting, which can be used to calculate the refractive indices in the low absorption wavelength range. After poled along [011] direction, the optical transmission of PIMNT single crystal is more than 65% above 0.5 μm, which is much higher than that of [001] and [111] directions. Energy band gap was obtained from absorption coefficient.
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Chongjun He, Chongjun He, Hongbing Chen, Hongbing Chen, Jiming Wang, Jiming Wang, Xiaorong Gu, Xiaorong Gu, Tong Wu, Tong Wu, Youwen Liu, Youwen Liu, "Orientation dependence of dispersion and band gap of PIMNT single crystals", Proc. SPIE 10456, Nanophotonics Australasia 2017, 104566A (2 January 2018); doi: 10.1117/12.2301133; https://doi.org/10.1117/12.2301133

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