Tunable semiconductor laser optical tweezers system

A semiconductor and laser technology, applied in optics, optical components, radiation/particle processing, etc., can solve problems such as low power density, poor beam quality, and unbalanced beam quality, and achieve the effect of solving limitations and simple structure

Inactive Publication Date: 2018-08-24
CHANGCHUN UNIV OF SCI & TECH
View PDF2 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the asymmetric optical waveguide, the output beam of the semiconductor laser is asymmetrical in the direction perpendicular to the junction plane and parallel to the junction plane, the out

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Tunable semiconductor laser optical tweezers system
  • Tunable semiconductor laser optical tweezers system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] In order to further explain the system solution of the present invention, the present invention will be described in detail below through specific implementation.

[0015] Such as figure 1 Shown optical path schematic diagram, the present invention is a kind of tunable semiconductor laser optical tweezers system, and it comprises that it comprises side emission type semiconductor laser 1 and the plano-convex cylindrical lens 2 that places successively by the laser optical path of laser device, gradient index lens ( GRIN) 3, axicon 4 and focusing lens 5.

[0016] Due to the influence of the asymmetric optical waveguide, the output beam of the edge-emitting semiconductor laser 1 has a large difference between the fast axis and the slow axis: there are large and asymmetric divergence angles in the two directions; the beam waist in the two directions is not in the At the same position, there is inherent astigmatism; the source size in the fast axis direction is about 1 μm,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a tunable semiconductor laser optical tweezers system, including an edge-emitting semiconductor laser, and a plano-convex cylindrical lens, a gradient index lens, an axicon, afocusing lens arranged in sequence according to a laser optical path of a laser. The plano-convex cylindrical lens is placed on the position where circular distribution shows in a light outgoing propagation law process of the edge-emitting semiconductor laser. The distance between the focusing lens and the vertex of the axicon should be larger than the focal length of the focusing lens, and be smaller than a maximum non-diffraction distance that emergent light of the edge-emitting semiconductor laser passes through a light beam shaping system and generates Bessel beams through the axicon. Theoptical tweezers system can obtain bottle beams in different sizes as long as moving the distance between the gradient index lens (GRIN) and the plano-convex cylindrical lens, so as to capture and operate particles. The optical tweezers system is convenient for miniature integration, an optical damage problem of particles is not needed to be worried, and a new effective approach is provided for the semiconductor laser optical tweezers system.

Description

technical field [0001] The invention relates to the field of laser beam shaping, in particular to an adjustable semiconductor laser optical tweezers system. Background technique [0002] Optical tweezers are also called single-beam gradient optical traps. Simply put, it uses a three-dimensional potential well formed by a highly concentrated laser to capture and manipulate tiny particles. Optical tweezers is a three-dimensional gradient optical trap formed by the mechanical effect of momentum transfer between light and matter to manipulate particles. The local hollow beam (Bottle beam) is a beam with a local three-dimensional closed dark hollow area along the direction of light transmission. Due to the three-dimensional closed dark hollow region and extremely high intensity gradient, the local hollow beam can be used as a powerful tool such as laser catheter, optical tweezers and optical wrench. Local hollow beam optical tweezers have been successfully applied to the manip...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02B27/09G21K1/00
CPCG02B27/0916G02B27/095G02B27/0955G02B27/0966G21K1/00
Inventor 张贺杨智焜马晓辉李卫岩金亮徐英添
Owner CHANGCHUN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap