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Part-per-million gas detection from long-baseline THz spectroscopy
(AIP Publishing, 2004-09-13)
We report a long-baseline THz time domain spectrometer based on a White cell design capable of detecting gas species in the low part-per-million range in near real time. Coherent transients from methyl chloride vapor are ...
Characterization of thin polymer films using terahertz time-domain interferometry
(AIP Publishing, 2001-08-06)
An interferometer for broadband single-cycle THz pulses is developed based on the Michelson configuration. Total internal reflection of THz pulses in high-resistivity silicon prisms provides a nearly 180° phase shift of ...