Raman spectrum enhancement device and gas analysis system
A gas analysis system and Raman spectroscopy technology, applied in the field of Raman spectroscopy, can solve problems such as the application of Raman spectroscopy analysis system, achieve broad application prospects, enhance interaction, and enhance Raman signal effects
Active Publication Date: 2021-08-06
中国船舶集团有限公司第七一八研究所
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But it has not been applied in the Raman spectroscopy analysis system
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[0028] The present invention will be described in detail below with reference to the accompanying drawings.
[0029] According to VOCS detection, the present embodiment provides a Raman spectroscopy enhancement device, a Raman spectroscopy enhancement device including a light source system, an enhancement chamber 4, a sample cell 8, and a surface enhancement structure 11, and a 28th reflection reinforcing chamber is used.
[0030] The light source system includes a laser 1, a focusing mirror 2, a planar mirror 3; 532 nm continuous laser 1 using a light-emitting power of 300 mW as a light source, the laser beam is focused by the focusing mirror 2 focusing on the focus distance, the focusing mirror 2 is a air gap gloss lens, via a plane The mirror 3 is reflected in the reinforcing chamber 4 and focuses in the center of the cavity.
[0031] The reinforcing chamber 4 includes an enhanced cavity cavity and two concave mirrors; the enhanced cavity cavity is a stainless steel material, a...
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The invention discloses a Raman spectrum enhancement device and a gas analysis system. The Raman spectrum enhancement device comprises a light source system, an enhancement cavity, a sample celland a surface enhancement structure, the enhancement cavity is a near concentric cavity,the sample cell is located in the center of the enhancement cavity, and the surface enhancement structure is arranged in the center of the sample cell; a light beam provided by the light source system enters from an incidence hole and is reflected back and forth for multiple times in the enhancement cavity, two focus points are formed at the center of the sample cell, and the two focus points are respectively converged on two side surfaces of the surface enhancement structure to enhance Raman scattering light. The gas analysis system comprises a Raman spectrum enhancement device, a scattered light collection system and an analysis system; the Raman scattering light at the center of the sample cell is gathered and coupled by a scattering light collecting system, and then gas Raman signal analysis is carried out by the analysis system. The Raman scattering signal intensity can be improved, and further the sensitivity of Raman spectrum gas detection is improved.
Description
Technical field [0001] The present invention relates to the technical field of Raman spectroscopy, and more particularly to a Raman spectroscopy enhancement device and a gas analysis system. Background technique [0002] In various production processes such as petroleum refining, industrial production, coal mining, and steel smelting, multi-component mixed gases are very important. At present, in multi-component gas detection techniques, gas chromatography and Fourier transformation have developed rapidly. The gas chromatograph has significant advantages in the analysis accuracy and analysis cycle, but the control of the analytical principle, gas chromatography requires carrier gas and column, complex gas path system, and reflection-speed converge speed control technology, and the measurement process is time-consuming (response time) It usually takes a few minutes to dozens of minutes). Fourier transform infrared spectrometer can analyze many inorganic gas and organic gases, and ...
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IPC IPC(8): G01N21/65G01N21/01
CPCG01N21/658G01N21/01G01N2021/0112
Inventor 侯春彩杨申昊杨凌赵韦静贾日波李鑫
Owner 中国船舶集团有限公司第七一八研究所