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We have demonstrated THz wave detection using an ultra-compact THz probe. Our THz probe is based on an electro-optic-sampling method, which has been developed as an electric field prober in the microwave frequency range. The THz probe is a fiber-based system operating at the 1.5 µm-band. The dimensions of the EO probe unit were 10mmφ × 60mm-long. By using the EO probe, a 2 THz-wide THz wave was successfully...
Several options for THz emitters and detectors operated at pump wavelengths around 1560 nm were investigated. Results from photoconductive antennas on In0.53Ga0.47As-based epilayers as well as DAST crystals are presented. Furthermore, the use of standard LTG GaAs antennas without frequency doubling is explored.
We generated an ultrabroadband coherent infrared pulse with 1–200 THz spectral range through an air plasma induced by a hollow-fiber compressed 10-fs, 300-µJ pulse and its second harmonic. Also we coherently detected the infrared pulse up to 100 THz with electro-optic sampling using a 20-µm thick GaSe crystal, proving that the infrared pulse was phase locked.
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