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Terahertz time-domain spectroscopy system

A terahertz time-domain and spectral system technology, applied in absorption/scintillation/reflection spectroscopy, spectrometry/spectrophotometry/monochromator, spectrum investigation, etc., can solve problems such as distortion, error, and signal distortion

Active Publication Date: 2016-08-10
SHENZHEN CCT THZ TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is only suitable for low-intensity terahertz signals. Using this method for high-intensity terahertz pulse signals will cause signal distortion, distortion, etc., and get wrong information

Method used

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  • Terahertz time-domain spectroscopy system
  • Terahertz time-domain spectroscopy system
  • Terahertz time-domain spectroscopy system

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Embodiment Construction

[0026] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of ...

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Abstract

The invention relates to a terahertz time-domain spectroscopy system. In the terahertz time-domain spectroscopy system, femtosecond laser radiated by a femtosecond laser is collimated by a first diaphragm, and then, the femtosecond laser is split into pump light and probe light through a beam splitter; the pump light generates terahertz pulses through a first light path assembly; the probe light generates linear polarization probe light aplanatic with the pump light through a second light path assembly; and the linear polarization probe light and the terahertz pulses are combined through a beam combiner to obtain a light beam to be detected and carrying terahertz pulse information. Meanwhile, a detection device is provided with two equal-thickness electro-optical crystals; and by adjusting the included angle between crystal axes of the two pieces of electro-optical crystals, corresponding phase compensation is realized on phase delay of two components, o light and e light, of the probe light passing through the first electro-optical crystal, thereby realizing linear probing of strong terahertz pulses and improving measurement precision.

Description

technical field [0001] The invention relates to the field of terahertz technology, in particular to a terahertz time-domain spectroscopy system. Background technique [0002] Terahertz (THz, 1THz=10 12 Hz) frequency band refers to the range of electromagnetic radiation with a frequency from 0.1 THz to 10 THz and a wavelength between microwave and infrared light. Due to its short time scale, terahertz radiation can provide the ability of ultrafast time-resolved spectroscopy. It can be used to penetrate some materials such as organisms, dielectric materials, and gas phase substances. It can be obtained by analyzing the transflective terahertz signal of the sample material. Information about the composition of the material, as well as its physical, chemical, biological state, etc. Also because of the wide frequency band of terahertz wave and the small photon energy, it will not cause damage to the detection material, so terahertz technology can be applied to many fields such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/42
CPCG01J3/42G01J2003/423G01J3/0205G01J3/0224G01N21/3586G01N21/3581G01N21/49G01N21/3563G01N21/3577G01J3/2803G01J3/4338G01J2003/2806G01J2003/421G01J2003/425G01N2201/06113
Inventor 彭世昌潘奕李辰丁庆
Owner SHENZHEN CCT THZ TECH CO LTD
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