Tuesday, January 9, 2018
Abstract-The effect of optical pump on the absorption coefficient of 0.65CaTiO3-0.35NdAlO3 ceramics in terahertz range
Dan Li, Chunya Luo, Yebin Xu, Liang, Wu, Huaixing Wang, Songjie Shi, Furi Ling, Jianquan Yao,
The absorption coefficient of 0.65CaTiO-0.35NdAlO ceramics under external optical fields was investigated by terahertz time-domain spectroscopy in a frequency range of 0.2 THz to 1 THz at room temperature. It could be found that the variation of the absorption coefficient is approximately from 8.95 cm to 26.02 cm in the frequency range of 0.2 THz to 1 THz, and the tuning range is about 3.32 cm at 0.6 THz which almost reaches up to nearly 23.32%. The micromechanism of these results was attributed to the excited free carriers by the external optical pump intensity.