Photothermal-fluorescent double-mode spectrum detection device and detection method thereof

A spectral detection and dual-mode technology, applied in the field of spectral detection, can solve the problems of measurement results greatly affected by scattering, single photothermal detection technology, photothermal spectral detection technology fluorescence detection technology, low detection sensitivity, etc., and achieve the best measurement results Reliability, high detection sensitivity, and the effect of eliminating the influence of measurement results

Inactive Publication Date: 2015-03-25
HEFEI ZHICHANG PHOTOELECTRIC TECH
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Problems solved by technology

[0004] The previous technology is only a single photothermal detection technology, photothermal spectrum detection technology, fluorescence detection tec

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  • Photothermal-fluorescent double-mode spectrum detection device and detection method thereof

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[0028] The present invention will be further described below with reference to the drawings and specific embodiments.

[0029] Such as figure 1 As shown, a photothermal-fluorescence dual-modal spectrum detection device includes a sample stage 0, an optical excitation system, an optical detection system, a first photothermal signal receiving system, a second photothermal signal receiving system, a fluorescence signal receiving system, Energy monitoring system and computer 8.

[0030] The optical excitation system includes a pump light source 11, a pump light modulation device 12, and a pump light converging device 13. The pump light source 11 is used to deform the tested sample and excite the fluorescent signal of the tested sample; the pump light modulation device 12 and the pump light converging device 13 are sequentially arranged on the optical path between the pump light source 11 and the sample to be tested; the pump light source 11 is electrically connected to the comput...

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Abstract

The invention provides a photothermal-fluorescent double-mode spectrum detection device. The photothermal-fluorescent double-mode spectrum detection device comprises a sample table for arranging a to-be-detected sample, and further comprises a pumping light source, a detecting light source, a first photoelectric detector, a second photoelectric detector and a photoelectric multiplier which are connected to the to-be-detected sample light path respectively, wherein the first photoelectric detector is used for receiving a detection photothermal signal transmitted from a detected sample; the second photoelectric detector is used for receiving a detection photothermal signal reflected from the detected sample; the photoelectric multiplier is used for receiving a fluorescent signal transmitted from the detected sample by virtue of an emission monochromator; the output ends of the first photoelectric detector and the second photoelectric detector are connected to the input end of a computer by virtue of a lock-in amplifier; and the output end of the photoelectric multiplier is connected to the input end of the computer. The invention further provides a detecting method of the photothermal-fluorescent double-mode spectrum detection device. The photothermal-fluorescent double-mode spectrum detection device is high in detection sensitivity and relatively reliable in detected result, and capable of eliminating the influences of scattering on the detected results.

Description

technical field [0001] The invention relates to the technical field of spectrum detection, in particular to a photothermal-fluorescence dual-mode spectrum detection device and a detection method thereof. Background technique [0002] Photothermal detection technology is a new method developed in recent years to measure the weak absorption of optical materials. It has the advantages of high sensitivity, convenient adjustment, and non-contact. At present, photothermal detection technology is widely used in the absorption detection of optical materials such as thin film samples or crystal materials. It is a detection method for quantitative analysis and sorting of the properties of optical materials such as thin film samples or crystal materials. At present, the thermal lens method is commonly used in photothermal detection technology, which focuses the pump laser (excitation light) on the surface of the optical material to obtain a certain power density, so that the optical...

Claims

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Application Information

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IPC IPC(8): G01N21/64G01N21/31
Inventor 李冰冰董敬涛陈坚吴周令
Owner HEFEI ZHICHANG PHOTOELECTRIC TECH
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