The modulations of refractive index and absorption properties of BST (Ba0.5Sr0.5TiO3) film (40.5nm)/STO (Sr0.5Ti0.5O3) film (41.2nm) /silicon substrate structure by 532nm and 1064nm continuous-wave (CW) laser pump were investigated in the terahertz range.
© 2017 Optical Society of America
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