Method and system for measuring rock optical parameters based on Terahertz time-domain spectroscopy

A technology of terahertz time domain and optical parameters, which is applied in the direction of color/spectral characteristic measurement, phase influence characteristic measurement, etc., can solve the lack of non-destructive and effective rock optical parameter measurement technology and other problems, and achieve non-destructive testing, easy operation, repeatability good sex effect

Inactive Publication Date: 2012-08-01
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the prior art lacks a non-destructive and effective rock optics parameter determination technique

Method used

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  • Method and system for measuring rock optical parameters based on Terahertz time-domain spectroscopy
  • Method and system for measuring rock optical parameters based on Terahertz time-domain spectroscopy
  • Method and system for measuring rock optical parameters based on Terahertz time-domain spectroscopy

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Embodiment 1

[0023] figure 1 It is a flow chart of a method for determining rock optical parameters based on terahertz time-domain spectroscopy provided by an embodiment of the present invention, such as figure 1 As shown, the methods described include:

[0024] S101. Detect the rock base and the rock sample, and acquire the terahertz pulse time-domain waveform of the rock base and the terahertz pulse time-domain waveform of the rock sample.

[0025] In the embodiment of the present invention, the method of measuring rock optical parameters based on terahertz time-domain spectroscopy and performing detection and analysis can be detected using a terahertz time-domain spectroscopy device, wherein the titanium sapphire femtosecond mode-locked pulse laser generates a central wavelength of 800nm ​​( Nano), a laser light source with a repetition rate of 80MHz (megahertz), and a pulse width of 100fs (femtoseconds), with an output power of 960mW (milliwatts); the above-mentioned device uses GaAs ...

Embodiment 2

[0051] Figure 10 It is a system structure diagram for measuring rock optical parameters based on terahertz time-domain spectroscopy provided by the embodiment of the present invention, as shown in Figure 10 As shown, the system includes: a transmission terahertz time-domain spectroscopy device 111 and a data processing device 112, wherein,

[0052] The transmission terahertz time-domain spectroscopy device 111 is used to detect rock bases and rock samples, and obtain the terahertz pulse time-domain waveform of the rock base and the terahertz pulse time-domain waveform of the rock sample.

[0053] In the embodiment of the present invention, in the transmission-type terahertz time-domain spectroscopy device 111, the titanium-sapphire femtosecond mode-locked pulse laser generates a central wavelength of 800nm ​​(nanometer), a repetition frequency of 80MHz (megahertz), and a pulse width of 100fs (femtoseconds). second) laser light source with an output power of 960mW (milliwatt...

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Abstract

The invention relates to a method and a system for measuring rock optical parameters based on Terahertz time-domain spectroscopy. The method comprises the steps of: detecting a rock substrate and a rock sample, and obtaining the Terahertz time-domain waveform of the rock substrate and the Terahertz time-domain waveform of the rock sample; processing the Terahertz time-domain waveform of the rock substrate and the Terahertz time-domain waveform of the rock sample, and obtaining the absorption spectrum and the refractive index spectrum data. The method and the system for measuring rock optical parameters based on the Terahertz time-domain spectroscopy provided by the invention have the advantages that the fast and nondestructive detection can be carried out on the rock, the operation of the detection method is easy, the data processing is simple, and the repeatability is good.

Description

technical field [0001] The present invention relates to the technical field of measuring rock optical parameters, in particular to the technical field of measuring rock optical parameters using terahertz waves, and specifically relates to a method and system for measuring rock optical parameters based on terahertz time-domain spectroscopy. Background technique [0002] Terahertz (Terahertz or THz) waves usually refer to electromagnetic waves with a frequency in the range of 0.1 to 10 THz. The energy of the photons is about 1 to 10 meV, which is roughly equivalent to the energy of the transition between molecular vibration and rotational energy levels. Most polar molecules such as water molecules and ammonia molecules have strong absorption of THz radiation. Therefore, the THz spectrum of substances (including emission, reflection and transmission spectra) contains rich physical and chemical information, which is of great importance in many disciplines. Value. [0003] Rock ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/41
Inventor 赵昆宝日玛
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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