Detection device capable of integrating stimulated Brillouin scattering and optical coherent elastic imaging

A technology of stimulated Brillouin and elastography, which can be used in the measurement of scattering properties, measurement devices, and material analysis by optical means, which can solve the problems of low analysis efficiency, environmental pollution, and high work intensity.

Active Publication Date: 2018-03-06
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0002] Elastic modulus and viscosity are very important physical parameters in the application of industrial materials. Through these parameters, material characteristics and quality detection can be effectively analyzed. However, traditional analysis methods mainly use chemical analysis or nuclear magnetic resonance and gas chromatog

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  • Detection device capable of integrating stimulated Brillouin scattering and optical coherent elastic imaging
  • Detection device capable of integrating stimulated Brillouin scattering and optical coherent elastic imaging

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[0015] exist figure 1Among them, a detection device and method integrating stimulated Brillouin scattering and optical coherence elastography, characterized in that: in the stimulated Brillouin scattering detection system, the computer 015 is connected to the synchronization controller 018, and the synchronization controller 018 Connect Nd:YAG solid-state laser 019, Nd:YAG solid-state laser 019, polarizing beam splitter 020, 1 / 4 wave plate 006 and total reflection mirror 005B on the same horizontal optical axis, and change the optical path through another parallel total reflection mirror 005C, total reflection The mirror 005C, the lens 004B, the sample to be tested 007 and the photodetector 008 are on the same horizontal optical axis. The computer 015 starts the synchronous controller 018 to control the Nd:YAG solid-state laser 019 with a pulse width of 10ns, and the Nd:YAG solid-state laser 019 outputs 532nm vertically polarized light, which becomes 532nm level by the polariz...

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Abstract

The invention discloses a detection device capable of integrating stimulated Brillouin scattering and optical coherent elastic imaging. The detection device comprises a stimulated Brillouin scatteringmeasuring branch and an optical coherent elastic imaging measuring branch. Single longitudinal mode horizontal polarized light is output by a laser, passes through a polarizing beam splitter and a quarter-wave plate sequentially and then is changed into circularly polarized light, the circularly polarized light is reflected by a totally reflecting mirror and is focused into a sample by a lens tostimulate stimulated Brillouin scattering, a scattered signal returns along a back direction by the phase conjugate characteristic, passes through the quarter-wave plate again, is changed into vertical polarization, is reflected by the polarizing beam splitter and the totally reflecting mirror and then passes through a lens, a filter and an F-P standard tool sequentially, and an ICCD signal acquisition system acquires a stimulated Brillouin scattering signal. The detection device has the following advantages: a fingerprint identification database for different sample detection is established by combining absorption spectral features corresponding to different detection samples as well as the bulk modulus, the shear elasticity and the viscosity information of the samples, and an effective method and technology for rapidly detecting various samples is formed finally.

Description

technical field [0001] The invention relates to the technical field of optical detection, to the technical field of light scattering and optical imaging detection, and belongs to the field of computer control systems, in particular to a detection device integrating stimulated Brillouin scattering and optical coherent elastic imaging. Background technique [0002] Elastic modulus and viscosity are very important physical parameters in the application of industrial materials. Through these parameters, material characteristics and quality detection can be effectively analyzed. However, traditional analysis methods mainly use chemical analysis or nuclear magnetic resonance and gas chromatography-mass spectrometry. The disadvantages of testing with large-scale instruments are that the analysis time is long, the work intensity is high, and the analysis efficiency is relatively low. Moreover, some chemical methods need to add other chemical reagents during the detection, which will ...

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Application Information

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IPC IPC(8): G01N21/01G01N21/49G01N21/63
Inventor 史久林严峰罗宁宁刘娟李淑静张余宝何兴道陈忠平
Owner NANCHANG HANGKONG UNIVERSITY
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