Method of imaging by simultaneous compensated focusing of laser beams of multiple wavelengths in scattering medium

A focused imaging and multi-wavelength technology, applied in the field of focused imaging of scattering media and deep biological tissues, can solve the problem of lack of simultaneous focused imaging of multiple wavelengths

Inactive Publication Date: 2018-10-26
刘子丰
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Problems solved by technology

[0003] The above method based on phase disturbance measurement and compensation of scattering medium represents the current technical status of single-wavelength laser focusing imaging. Although it can meet the application req

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  • Method of imaging by simultaneous compensated focusing of laser beams of multiple wavelengths in scattering medium
  • Method of imaging by simultaneous compensated focusing of laser beams of multiple wavelengths in scattering medium
  • Method of imaging by simultaneous compensated focusing of laser beams of multiple wavelengths in scattering medium

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] The spatial light modulator is a key device for laser to overcome the scattering effect and effectively focus and image inside the medium. The compensation sub-region and wavelength sub-unit composite structure and iterative algorithm of the spatial light modulator proposed by the present invention are the core. Divide the entire spatial light modulator array surface into a composite structure including compensation sub-regions and wavelength sub-units; use an iterative algorithm to calculate phase compensation for each compensation sub-region and wavelength sub-unit, and the compensation phase distribution of each compensation sub-region corresponds to The maximum focusable light intensity at the central wavelength, and the phase distribution of each wavelength subunit corresponds to the maximum focusable light intensity of a single wavelength; t...

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Abstract

The invention discloses a method of imaging by simultaneous compensated focusing of laser beams of multiple wavelengths in a scattering medium. A spatial light modulator is divided into a plurality ofscattering effect compensation subareas; each compensation subarea is further divided into a plurality of wavelength subunits correspondingly according to the quantity of laser beams of different wavelengths to be compensated. Each wavelength subunit correspondingly and independently controls phase compensation of single wavelength; optimal compensation phase distribution on a whole array face ofthe spatial light modulator is formed by sequential arrangement of the wavelength subunit and compensation subarea composite structural modules; phase compensation of single wavelength can be achieved for the subunits of each wavelength according to the incoherence characteristic of wavelength components; when laser beams of multiple wavelengths irradiate the spatial light modulator at the same time, simultaneous compensated focusing imaging of the laser beams of multiple wavelengths in the scattering medium can be achieved. The method has an important application prospect in the fields, suchas laser therapy and biophoton microoperation.

Description

technical field [0001] The invention relates to the field of focal imaging of scattering media and deep biological tissues, specifically a multi-wavelength laser simultaneous compensation focusing imaging method in scattering media, using a spatial light modulator compensation sub-region and wavelength sub-unit composite structure module and an iterative compensation algorithm to realize Simultaneous focusing and imaging of multi-wavelength lasers in a scattering medium. Background technique [0002] With the development of modern science and technology, laser focusing and imaging detection technology in biological tissues has become a vital research direction for the development of life sciences. How to overcome the scattering effect of laser light in biological tissues and obtain sufficient laser focusing energy to manipulate or optically image biological tissues or molecules is an important topic in the application research of biophotonics. In particular, with the contin...

Claims

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Application Information

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IPC IPC(8): G01N21/49
CPCG01N21/49
Inventor 刘子丰
Owner 刘子丰
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