Far-infrared dispersion of complex dielectric constant in the ferroelectric near-stoichiometric LiNbO3:Fe
Source abstract
Abstract
Abstract The dielectric properties of near-stoichiometric LiNbO3:Fe single crystal have been investigated by using a terahertz time domain spectroscopy (THz–TDS) in a frequency range of 0.7–1.6 THz at room temperature. When coupled with an applied external optical field, an obvious photorefractive effect was observed, resulting in the modulation of the complex dielectric constant for near-SLN:Fe. The variation of refractive index |Δn| has a linear relationship on scale with the applied light intensity accompanied with a steplike decrease. These findings were attributed to the internal space charge field of photorefraction and the light-induced domain reversal in the crystal.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Photorefractive and Nonlinear Optics · Terahertz technology and applications · Photonic and Optical Devices
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References (20)
Show source-provided references
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