Broadband terahertz time-domain (THz-TDS) spectroscopy provides simultaneous amplitude and phase information, and becomes a powerful tool for the characterization of materials and devices including semiconductors, complex metal oxides, multiferroics, metamaterials, and fingerprints in many chemicals and biological tissues. Multiple THz-TDS based capabilities developed in-house are available for conventional THz-TDS, optical-pump THz-probe (OPTP), and high-power, nonlinear measurements.

Capabilities include:

• Fiber-coupled photoconductive conventional THz time-domain spectroscopy for angle resolved reflection, transmission, and scattering measurements.
• Tilted wavefront high power THz-pump THz-probe spectroscopy.
• Cryogenic capability (4 K–700 K) in combination with these THz systems.
• Optical-pump THz-probe spectroscopy, using 800 nm, 400 nm (SH) and 267 nm (TH) pumps, with additional capability of magnetic field up to 8 T and temperature down to 1.5°K.

Contact: Hou-Tong Chen