Effect of optical pumping on the dielectric properties of 0.6CaTiO 3 -0.4NdAlO 3 ceramics in the terahertz range
2018
The dielectric properties of 0.6CaTiO3-0.4NdAlO3 ceramics under external optical fields were 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 real part of complex permittivity is approximately 0.31 in the frequency range of 0.2 THz to 1 THz. However the imaginary part of the dielectric constant does not change appreciably with the external optical field. The micromechanism of these results was attributed to the built-in electric field caused by the excited free carriers in the ceramics.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
12
Citations
NaN
KQI