Local area hollow four-trap system based on double-light-beam structure

Abstract

The invention relates to an applied optics technology, a light beam shaping filed and a biological control filed, in particular to a local area hollow four-trap system based on a double-light-beam structure. The local area hollow four-trap system comprises a laser source, a light beam shaping assembly, a hollow light beam generating assembly, a light splitting assembly and a reflecting mirror assembly; the hollow light beam generating assembly comprises a first biconical hollow shaping lens and a second biconical hollow shaping lens; and an emergent laser of the laser source is subjected to light beam collimation shaping through the light beam shaping assembly, the collimated and shaped incident laser beam is divided into double hollow light beams through the hollow light beam generating assembly, the double hollow light beams are split to two double hollow light beam bodies through the light splitting assembly and then reflected by the reflecting mirror assembly to form a tunable laser trap of a local area hollow four-trap structure. The local area hollow four-trap system is simple in structure, convenient to operate and low in cost, and applicability of optically captured particles is expanded.

Description

technical field [0001] The invention relates to the fields of applied optical technology, beam shaping and biological manipulation, and in particular relates to a local hollow four-well system based on a double-beam structure. 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, which is called a local hollow beam (bottle beam). 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 novel physical properties make localized hollow beams have great potential and broad application prospects in laser cooling and trapping, optical tweezers, and manipulation of microscopic particles (biological cells, atoms, molec...

AI Technical Summary

Problems solved by technology

At present, there are few studies on the local hollow four-well beam, and the existing local hollow beam tunable system has a complex structure, and the manipulation of the tuning system is inconvenient

At the same time, for particles of different sizes, different devices need to be replaced for capture, which is expensive

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