发明名称 |
Terahertz transceivers and methods for emission and detection of terahertz pulses using such transceivers |
摘要 |
A system for emitting and detecting terahertz frequency electromagnetic pulses. The system comprises a single transceiver device, which may be an electro-optic crystal or photoconductive antenna, for both emitting and detecting the pulses. A related method comprises using a single transceiver device to both emit and detect electromagnetic terahertz frequency pulses. The transceiver device is excited by a pump pulse to emit a terahertz output pulse, which is modulated with a chopper. An object reflects the terahertz pulse and the reflected pulse is detected in the transceiver using a probe pulse. A lock-in amplifier set to the same frequency of the chopper is used to reduce noise in the signal detected by the transceiver. An image of the object may be created using the intensity or the timing of the peak amplitude of the terahertz pulses reflected from the object.
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申请公布号 |
US2001038074(A1) |
申请公布日期 |
2001.11.08 |
申请号 |
US20010826458 |
申请日期 |
2001.04.05 |
申请人 |
ZHANG X.-C.;TANI MASAHIKO;JIANG ZHIPING;CHEN QIN |
发明人 |
ZHANG X.-C.;TANI MASAHIKO;JIANG ZHIPING;CHEN QIN |
分类号 |
G01N21/17;G01J11/00;G01N21/35;(IPC1-7):G01J5/02 |
主分类号 |
G01N21/17 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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