Measuring apparatus using terahertz wave

Details Measuring apparatus using terahertz wave Measuring apparatus using terahertz wave

2011-03-15

2011-03-15

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C250S341800

Reexamination Certificate

active

07906764

ABSTRACT:
A measuring apparatus measures a time-domain waveform of THz wave pulse by time-domain spectroscopy. The apparatus includes a detector for detecting THz wave pulse containing a signal component at frequency fs, a small signal detector for detecting the signal component at frequency fs of a signal supplied from the detecting portion, with a time constant τ, and an integrator. The integrator is connected to an output stage of the small signal detector to integrate signals supplied from the small signal detector, and has a time constant below the time constant τ and over 1/(2fs).

REFERENCES:
patent: 5952818 (1999-09-01), Zhang et al.
patent: 2007/0282206 (2007-12-01), Arnone et al.
patent: 2008/0029712 (2008-02-01), Canioni et al.
patent: 2006-266908 (2006-10-01), None

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