Free Opening and Closing System of Local Hollow Beam Based on Optical Tweezers Technology

A local hollow beam and optical tweezers technology, applied in the field of applied optics, can solve the problems of low flexibility, high cost, complex structure, etc., and achieve the effect of improving capture efficiency, low cost and high flexibility

Active Publication Date: 2021-08-06
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, there are few reports on the generation of localized hollow beams with gaps, mainly focusing on the polarization control of biaxial crystals and the control of spatial light modulators. question

Method used

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  • Free Opening and Closing System of Local Hollow Beam Based on Optical Tweezers Technology
  • Free Opening and Closing System of Local Hollow Beam Based on Optical Tweezers Technology
  • Free Opening and Closing System of Local Hollow Beam Based on Optical Tweezers Technology

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Embodiment Construction

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.

[0022] In addition, the terms "first" and "second" are used for descriptive pur...

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Abstract

The invention relates to a free opening and closing system of a local hollow beam based on optical tweezers technology, which includes a laser source, a beam expander, a circular aperture diaphragm, an axicon, and a focusing lens arranged in sequence along the light propagation direction; the laser source After the emitted laser light passes through the beam expander, it is incident on the circular aperture diaphragm that rotates at a specific angle. The adjusted asymmetrical beam is refracted by the axicon, and is focused by the focusing lens to form a local hollow beam with a gap to restore the rotation. The circular aperture diaphragm, the incident beam will form a three-dimensional closed local hollow beam after passing through the optical system. The invention regulates the incident light beam through the flexible rotating circular aperture diaphragm, and the formed local hollow beam gap can be opened and closed freely, which proposes a new idea for the particle capture of the optical tweezers system and solves the limitations of the existing optical tweezers device , which can realize the characteristics of simple operation, tunability and stability of the system.

Description

technical field [0001] The invention relates to the field of applied optics technology, in particular to a free opening and closing system of local hollow beams based on optical tweezers technology. Background technique [0002] Among the hollow beams, there is a special type that has attracted widespread attention. In the direction of propagation, there is a three-dimensional closed area with minimal or even zero light intensity, like a special airtight container, called local hollow beams. Localized hollow beams have many novel and unique properties, such as barrel-shaped intensity distribution, spin angular momentum and orbital angular momentum, small dark spot size, and no heating effect. These characteristics make hollow beams have unique applications in laser trapping and cooling, optical tweezers, Bose-Einstein condensate, optical measurement, computational holography, etc. Among them, the optical tweezers technology based on the laser microbeam optical trap effect i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09G21K1/00
CPCG02B27/095G02B27/0955G02B27/0988G21K1/00
Inventor 张贺林兴磊金亮徐英添邹永刚李卫沿王海珠范杰马晓辉
Owner CHANGCHUN UNIV OF SCI & TECH
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