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Simplified dualbeam optical tweezers system

A dual-beam, optical tweezers technology, applied in the field of simplified dual-beam optical tweezers system, can solve complex problems and achieve the effects of reducing noise, simple system structure, and high test accuracy

Inactive Publication Date: 2017-06-30
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to reduce the noise of the optical tweezers system and overcome the shortcomings of the existing multi-beam optical tweezers system which is too complicated, the present invention proposes a simplified dual-beam optical tweezers system

Method used

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  • Simplified dualbeam optical tweezers system

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Embodiment

[0034] A simplified dual-beam optical tweezers system proposed by the present invention will be further described below in combination with embodiments, but the present invention is not limited thereto.

[0035] The laser 1 produces a beam with a wavelength of 1064 nanometers, which is incident into the optical isolator 2 . The light beam can only propagate in one direction in the optical isolator 2, and the diameter of the light beam after passing through the optical isolator 2 is 2 mm.

[0036] The light beam emitted from the optical isolator 2 enters the first telescopic system 3 . The first telescopic system 3 expands, collimates, and compresses the divergence angle of the beam, so that the parallelism of the outgoing beam is better and the light energy distribution is more uniform. In this embodiment, the magnification of the first telescopic system 3 is 2.5 times. The diameter of the laser beam after beam expansion and collimation is 5 mm.

[0037] The beam emitted by...

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Abstract

The invention discloses a dualbeam optical tweezers system based on a spatial light modulator. The dualbeam optical tweezers system comprises a laser, a first telescopic system, a half-wave plate used for adjusting the polarization direction of an incident light beam, a spatial light modulator loaded with phase diagram information, a second telescopic system, a microscopic object lens, a sample pool, a reflector, a connecting rod, and a micro-displacement bench, which are arranged in order along an optical path. The light beam reaches the spatial light modulator after passing by the half-wave plate, undergoes phase coding and wavefront modulation of the spatial light modulator, and then reaches the sample pool by sequentially passing through the second telescope system and the microscopic object lens. The structure of the dualbeam optical tweezers system is greatly simplified, and the application range of optical tweezers is increased.

Description

technical field [0001] The invention relates to the field of applied optics technology, the field of nanotechnology, and the fields of biology and physics, in particular to a simplified double-beam optical tweezers system. Background technique [0002] Optical tweezers is a physical tool based on the mechanical effect of laser light, which uses the optical potential well formed when the strongly converged light field interacts with particles, that is, optical tweezers to capture particles. Optical tweezers are the result of the interaction between light and matter. Optical tweezers technology uses the radiation pressure of light to realize the operation of tiny cells, from the initial operation of micron-scale cells to the current precision operation of sub-nanometer cells. [0003] In the patent document "A Scanning Optical Tweezers System for Capture and Detection Multiplexing, Publication No. CN102540447A" by Zhou Jinhua et al., the size of the beam spot and the objective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B21/32G21K1/00
CPCG02B21/32G21K1/006
Inventor 李旸晖周辉来邻芮丛珊王乐
Owner CHINA JILIANG UNIV
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