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THz detecting system and method for oscillating mirror rapid scanning electro-optic sampling

An electro-optical sampling and detection system technology, which is applied in the direction of color/spectral characteristic measurement, measuring device, material analysis through optical means, etc. background noise etc.

Inactive Publication Date: 2006-08-09
CAPITAL NORMAL UNIVERSITY
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Problems solved by technology

A disadvantage of this method is that the delay time scanning is too slow, and the observed spectral information is not timely enough, especially it is difficult to achieve real-time imaging
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  • THz detecting system and method for oscillating mirror rapid scanning electro-optic sampling
  • THz detecting system and method for oscillating mirror rapid scanning electro-optic sampling
  • THz detecting system and method for oscillating mirror rapid scanning electro-optic sampling

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Embodiment Construction

[0024] refer to figure 1 , a galvanometer-type fast scanning electro-optic sampling THz detection system, including a THz wave scanning delay system 4, a THz wave time-domain electro-optic sampling system 12, a signal detection and data processing system 13, wherein the THz wave scanning delay system 4 consists of The existing scanning delay system of the electric translation stage is replaced by a galvanometer type fast scanning delay system. refer to figure 2 , in the vibrating mirror type fast scanning delay system 4 proposed in the present invention, including vibrating mirrors M3 and M4, vibrating mirror base 44, loudspeaker 43, pole 42, one-dimensional translation stage 41 and manual screw 45, one-dimensional translation stage 41 can only move in the OX direction, the loudspeaker 43 is installed on the one-dimensional translation platform 41 through the pole 42, the vibrating mirrors M3 and M4 are bonded to the vibrating mirror base 44, and are bonded together on the v...

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Abstract

Present invention discloses a shaken mirror type short scan electric light sampled THz detection system and detection method. Said detection system includes THz wave scanning delay system, THz wave duration domain electric light sampling system, signal detection and data processing system, featuring current electrical driving translational table scanning delay system replaced by shaken mirror type short scan delay system in THz wave scanning delay system, shaken mirror type short scan delay system including two shaken mirrors, shaken mirror base, speaker, support bar, and translational table. Detection method includes vibration plane of speaker oscillating cavity in shaken mirror type short scan delay system reciprocate moving under control signal action, thereby making THz wave delay to realize electric light sampling, then through signal detection and processing data to realize fast THz electric light sampling detection.

Description

technical field [0001] The invention relates to the technical field of THz spectrum analysis and imaging, in particular to a THz detection system and detection method for scanning delayed electro-optical sampling, and belongs to the technical field of pulsed THz wave rapid detection. Background technique [0002] THz waves generally refer to electromagnetic radiation with a frequency in the range of 100GHz-10THz (3.3mm-33μm), and its waveband is between microwave and infrared light. Due to the lack of effective THz generation and detection methods before, people's understanding of the properties of electromagnetic radiation in this band is so limited that this band has long been called the "THz gap" in the electromagnetic spectrum. In the past ten years, the rapid development of ultrafast laser technology has provided a stable and reliable excitation light source for the generation of THz pulses, and promoted the vigorous development of THz wave radiation mechanism research,...

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Application Information

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IPC IPC(8): G01N21/27G01N21/17
Inventor 赵国忠
Owner CAPITAL NORMAL UNIVERSITY
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