THz wave generation and detection system using ̃ 1000 nm yb-doped fiber laser

Abstract

The THz generation and detection system using ̃ 1000 nm Yb-doped ultrashort pulse fiber laser has been constructed. We compared three binary zinc blende semiconductors CdTe, GaAs, and ZnTe as the nonlinear optical crystals for THz radiation. The phase matching condition of THz generation is satisfied in CdTe at the pumping wavelength of ∼ 1000 nm. At the condition, the intensity of THz wave becomes very high and its spectrum spreads widely. This behavior agrees with our simulation based on phase-matching condition. © 2007 Springer-Verlag New York.