A device and method for adjusting and controlling the three-dimensional direction intensity of a focused spot

A technology of focusing spot and spot, applied in optics, optical components, laser welding equipment, etc., can solve the problems of unsuitable processing of asymmetric structure, difficult to control the light intensity distribution of focusing spot, etc., to achieve clear position correspondence and improve flexibility , control the effect of simple

Active Publication Date: 2021-10-15
HUAZHONG UNIV OF SCI & TECH
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a device and method for adjusting the three-dimensional direction intensity of the focused spot. Technical Problems in Machining Asymmetric Structures

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
  • A device and method for adjusting and controlling the three-dimensional direction intensity of a focused spot
  • A device and method for adjusting and controlling the three-dimensional direction intensity of a focused spot
  • A device and method for adjusting and controlling the three-dimensional direction intensity of a focused spot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0030] Since the laser pulse width is inversely proportional to the spectral bandwidth, the spectral width of the femtosecond laser cannot be ignored. The glass material from which the lens is made has dispersion effects that often distort the spot shape when focusing femtosecond laser pulses. Specifically, when focusing on the optical axis, the spectral components of different wavelengths will...

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 device and a method for adjusting and controlling the three-dimensional direction intensity of a focused light spot, belonging to the field of laser processing. The device includes: a phase component, a first lens, a second lens and an objective lens; the phase component performs phase modulation on an incident light beam; the first lens and the second lens form a 4f system, and project the modulated light beam onto the front of the objective lens On the focal plane; the objective lens adopts a non-achromat lens to focus the spot, and utilizes the dispersion effect of the lens at different focusing positions to vary the stretching strength of the spot to produce focused spots in different oblique directions. The invention utilizes the dispersion effect of the objective lens to regulate the shape of the focused spot, so that the three-dimensional direction of the light intensity distribution can be adjusted, and is especially suitable for application scenarios that require processing of inclined structures, and can improve the flexibility of the laser processing system.

Description

technical field [0001] The invention belongs to the field of laser processing, and more specifically relates to a device and method for adjusting and controlling the three-dimensional direction intensity of a focused spot. Background technique [0002] In recent years, with the popularity of femtosecond lasers and the development of femtosecond laser processing technology, researchers have discovered many new characteristics and phenomena in femtosecond laser material processing. Compared with conventional continuous lasers and nanosecond laser lamps, femtosecond lasers have extremely high instantaneous power density. After focusing, nonlinear effects such as multi-photon absorption or multi-photon polymerization can be realized inside transparent materials, making three-dimensional laser direct writing Technology has developed rapidly, and a series of new applications have been derived, such as 3D laser printing, multi-dimensional optical storage, and 3D microfluidic chip m...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09B23K26/064B23K26/06
CPCB23K26/0648B23K26/064G02B27/0927G02B27/0938G02B27/0955
Inventor 张静宇高骥超刘思垣
Owner HUAZHONG 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