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Femtosecond laser high-speed digital microscopic imaging method and apparatus based on coherent receiver

A technology of coherent receivers and femtosecond lasers, which is applied in measuring devices, material analysis through optical means, instruments, etc., can solve the problems of sensitivity and frame rate affecting imaging systems, etc.

Inactive Publication Date: 2016-08-03
李朝晖
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Problems solved by technology

This mutual limitation between sensitivity and frame rate also affects almost all imaging systems

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  • Femtosecond laser high-speed digital microscopic imaging method and apparatus based on coherent receiver
  • Femtosecond laser high-speed digital microscopic imaging method and apparatus based on coherent receiver
  • Femtosecond laser high-speed digital microscopic imaging method and apparatus based on coherent receiver

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In addition, the protection scope of the present invention should not be limited only to the following specific modules or specific parameters.

[0019] The time-domain stretching imaging technology based on the dispersion Fourier transform of the present invention is invented and extensively researched as a high-speed microscopic imaging technology that may be applied to real-time observation of cells.

[0020] In the present invention, a femtosec...

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Abstract

The invention relates to a high-speed digital microscopic imaging method and apparatus based on a digital coherent receiver. The method comprises the following steps: subjecting femtosecond laser light to filtering and gain dispersion and then dividing the femtosecond laser light into signal light and reference light; subjecting the signal light to diffraction space dispersion, then allowing the signal light to enter a lens imaging system and allowing the signal light to return along an optical path after carrying of sample information; and allowing the signal light and the reference light to enter the digital coherent receiver for coherence, carrying out acquisition by using a high-speed oscilloscope and demodulating and recovering an image in virtue of a computerized algorithm. Compared with CCD and CMOS image controllers extensively applied in the prior art, the method and apparatus provided by the invention have the advantages that an ultrahigh 100 MHZ frame rate can be obtained as same-magnitude imaging resolution is guaranteed; and all-digital data acquisition based on the digital coherent receiver is beneficial for later real-time analysis and image optimization.

Description

technical field [0001] The invention belongs to the technical field of microscopic imaging, specifically relates to ultrafast imaging technology, and more specifically relates to a high-speed digital microscopic imaging method based on a digital coherent receiver. Background technique [0002] Optical imaging is a tool widely used today for detection and diagnosis. Most of today's experimental work is aimed at improving the spatial resolution of imaging detection systems; further, imaging systems with high resolution in time are applied to detect subtle dynamic processes such as optical rogue waves, cell variation, and neural changes. Equally important, high-speed imaging systems with high temporal resolution are increasingly important for biochemists studying subtle changes in cellular tissues. [0003] CCD and CMOS image sensors are the most widely used technologies in optical imaging systems today. It has the advantages of micron-level spatial resolution, a large number...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01
CPCG01N21/01
Inventor 李朝晖冯元华宋露
Owner 李朝晖
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