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 device based on a digital coherent receiver. The method includes the following steps: after filtering and gain dispersion, the femtosecond laser is divided into two into signal light and reference light; The diffraction space spreads out, and then enters the lens imaging system, carrying the sample information and returning along the optical path; the signal light and reference light are connected to the digital coherent receiver to complete the coherence, and then collected by a high-speed oscilloscope, and finally demodulated by a computer algorithm to restore the image. Compared with the CCD and CMOS image controllers widely used in daily life, the present invention can obtain an ultra-high frame rate of 100 MHZ while ensuring the same level of imaging resolution, and the all-digital sensor based on the digital coherent receiver Data acquisition is conducive to later real-time analysis and image optimization processing.

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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