Terahertz wave generation and detection from a cdte crystal characterized by different excitation wavelengths.
Terahertz (THz) wave generation and detection from a (110)-oriented CdTe crystal via optical rectification and electro-optic sampling has been performed with laser wavelengths ranging from 710 to 970 nm. Three optical rectification regimes are studied with various excitation wavelengths: a resonance-enhanced regime above the bandgap, a highly phase-mismatched regime near the band gap, and a semi-phase-matched regime. A CdTe crystal generates more THz power than a ZnTe crystal at 970 nm.
Xie
Xu
X
Center for Terahertz Research, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
Xu
Jingzhou
J
Zhang
X C
XC