THz spectroscopy on ferroelectric and dielectric materials
| Aim: Measure material properties of ferroelectrics and dielectrics in the THz spectral range. |
Approach: THz time domain spectroscopy in transmission or reflection at various temperatures. |
Impact: The frequency and damping constant of ferroelectric soft modes can be used to investigate
structural phase transitions. |
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THz time domain transmission spectroscopy: THz pulses are generated by optical rectification of
subpicosecond laser pulses in a nonlinear crystal, transmitted through the sample and detected by
the electro-optic modulation of probe pulses in another nonlinear crystal. |
People involved: Brunner, Schneider
