A time-resolved Raman spectroscopy device
A Raman spectroscopy and time-resolved technology, applied in the field of time-resolved Raman spectroscopy equipment, can solve the problems of inability to obtain time-resolved Raman spectroscopy, short lifespan of transient substances, and inability to measure transient substances.
Active Publication Date: 2020-11-03
NORTHWEST UNIV
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Problems solved by technology
[0004] In order to solve the above-mentioned problems that the existing Raman spectroscopy equipment cannot measure transient substances and obtain time-resolved Raman spectra, the present invention aims to provide a time-resolved Raman spectroscopy equipment
[0006] The present invention controls the time before and after the first laser and the second laser act on the sample through the delay generator, and solves the detection problem caused by the short life of the transient substance
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[0023] Below in conjunction with the drawings, preferred embodiments of the present invention are given and described in detail.
[0024] like figure 1 As shown, the time-resolved Raman spectroscopy device according to the present invention includes a laser system 1 , a sample system 2 and a collection system 3 , wherein the laser light emitted by the laser system 1 acts on the sample of the sample system 2 and then is measured through the collection system 3 .
[0025] like figure 1 As shown, the laser system 1 includes a relatively independent first laser component 11 and a second laser component 12, which respectively emit a first laser and a second laser to act on the sample. The first laser assembly 11 includes a first laser 111, a first upper prism 112, a first lower prism 113, a first lens 114 and a first reflector 115, wherein the first laser emitted by the first laser 111 is called pump laser , which first changes the direction of the optical path through the first ...
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The invention relates to a time-resolved Raman spectroscopy device, which includes: a sample system for providing a flowing stable liquid column; and a laser system for emitting a first laser to act on the stable liquid column to generate transient substances. A first laser component and a second laser component for emitting a second laser to act on the transient substance to generate Raman scattered light, the first laser component and the second laser component are connected through a delay generator; and Collection system having a first focusing mirror for collimating the Raman scattered light, a second focusing mirror for focusing the collimated Raman scattered light and detecting the focused Raman scattered light detector. The apparatus according to the invention can be used to measure Raman scattering of transient substances with low quantum efficiency, and can perform kinetic experiments to obtain time-resolved Raman spectra.
Description
technical field [0001] The present invention relates to Raman spectroscopy equipment, more particularly to a time-resolved Raman spectroscopy equipment. Background technique [0002] Raman spectroscopy is a kind of scattering spectrum, which is a powerful method to study the microstructure of matter. Existing Raman spectroscopy equipment is used to measure the Raman spectrum of steady-state substances, and cannot measure the Raman spectrum of transient substances, nor can it perform time-resolved experiments. [0003] The so-called stable substances refer to substances that can exist stably under normal conditions (for example: normal temperature, normal pressure, etc.), such as chemical substances such as sodium nitrate and potassium nitrate. The so-called transient substances refer to substances that cannot exist stably under normal conditions, but within a very short time range (such as nanoseconds (10 -9 s) or microseconds (10 -6 s) etc.) substances that can exist, su...
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IPC IPC(8): G01N21/65
CPCG01N21/65
Inventor 马佳妮郭燕
Owner NORTHWEST UNIV