Raman microscratch detection instrument based on distributive optical fiber amplifier

Abstract

The invention relates to a Raman microscratch detection instrument based on a distributive optical fiber amplifier. The Raman microscratch detection instrument comprises five parts including a Raman spectrum display module, a laser module, a lens module, a Raman lens and a surface enhancing probe, wherein the Raman spectrum display module uses a CCD detector and is used for displaying the collected Raman spectrum information and guiding out the tested Raman spectrum information; the laser module is used for generating laser and uses a distributive Raman amplifier; the Raman lens is used for gathering the laser and emitting the laser to the surface enhanced probe; the surface enhanced probe is directly in contact with micro articles for detection; a main body of the surface enhanced probe is an optical fiber; a nanometer metal silver coating is formed on the surface of the optical fiber through a surface decomposition technology; the collection on the Raman spectrum of the trace stage sample to be tested can be realized.

Description

technical field [0001] The invention belongs to the technical field of rapid detection of micro-scar samples, and in particular relates to a Raman micro-scar detector. Background technique [0002] With the advancement of nanomaterial preparation technology and micro-nano processing technology, the application of nanotechnology for biochemical sensing research has become increasingly mature in theory and application. Therefore, the study of optical fiber structure sensing combined with nanomaterial media is expected to break through the shackles of traditional optical fiber sensing technology and expand the application of optical fiber sensing technology in the fields of biology and chemistry. [0003] The distributed fiber Raman amplifier has a very low noise figure, and the optical signal-to-noise ratio (OSNR) of the distributed fiber Raman amplifier in the fiber optic communication link is 4dB-5dB higher than that of the erbium-doped fiber amplifier (EDFA), so it can Gre...

AI Technical Summary

Problems solved by technology

However, in biology and medical research, traditional biosensors are large in size and can only be used for the measurement of tissues, cell suspensions, etc. When the size of the detection sample is reduced to the micron level, such as the detection of living cells or other subcellular It becomes extremely difficult to measure the chemical and natural components in the sample in real time, accurately and without interference

Moreover, the traditional Raman spectrometer generally contains a very complex structure, but due to its very complex internal structure, the signal acquisition efficiency and coupling efficiency are low, resulting in low detection accuracy, bulky size, high cost, and limited application range

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