Laser etched pump light stripper and manufacturing method thereof

A technology of laser etching and manufacturing method, which is applied to laser parts, gas laser parts, optical waveguides and light guides, etc., can solve the problems of difficult cladding light stripping, poor control accuracy of optical fibers, and high toxicity of chemical agents. , to achieve the effect of cladding light filtering, not easy to be burned out, and solve the effect of high temperature

Inactive Publication Date: 2019-05-17
深圳市鹏星光电科技有限公司
View PDF3 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of chemical agents is highly toxic, and the control accuracy is poor when corroding the optical fiber, so it is difficult to strip the cladding light clean

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
  • Laser etched pump light stripper and manufacturing method thereof
  • Laser etched pump light stripper and manufacturing method thereof
  • Laser etched pump light stripper and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0024] The invention provides a laser-etched pumping light stripper, which includes a fiber core and an optical fiber cladding. The optical fiber cladding wraps the fiber core, and the outer surface of the optical fiber cladding is provided with a plurality of grooves. The groove can lead the pump light and stray light in the cladding of the fiber into the air here to improve the beam quality.

[0025] In this embodiment, the grooves are irregularly distributed on the outer surface of the optical fiber cladding. The more irregular the groove, that is, the rougher the outer surface of the fiber cladding, the higher the attenuation coefficient of the pump light in the fiber cladding. If the scattering coefficient is Rd, the ideal reflection coefficient is R0, the actual reflection coefficient is Rs, σ is th...

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 laser-etched pump light stripper and a manufacturing method thereof. The stripper comprises a fiber core and a fiber cladding, wherein the fiber core is wrapped by the fibercladding, and a plurality of grooves are formed on the outer surface of the fiber cladding. The manufacturing method comprises the following steps: setting a convex lens at the focusing position of the laser; focusing the laser beam on the fiber cladding through the convex lens, and etching a groove in the fiber cladding; moving the convex lens away from the focusing position, and moving the fibercladding to the next groove etching position; repeating the above two steps to etch a plurality of grooves in the fiber cladding. According to the invention, the plurality of grooves is arranged on the outer surface of the fiber cladding to form an attenuation area, so that pump light and some high-order mode stray light in the fiber cladding are stripped, and the quality of a laser beam is improved. In addition, the stripped light energy can be converted into heat energy to be taken away, so that the problem of over high temperature of the stripper is effectively solved, and the pump light stripper with good cladding light filtering effect that is unlikely to be burnt out is provided.

Description

technical field [0001] The invention relates to the field of fiber lasers, in particular to a laser-etched pump light stripper and a manufacturing method thereof. Background technique [0002] Optical stripper: A device that induces the conversion of the cladding mode to a radiation mode, usually made of a material with a refractive index equal to or greater than that of the fiber cladding. [0003] At present, high-power lasers are mainly used in cutting industrial materials. The working principle is that under the action of pump light, the laser energy level of the working material inside the gain fiber appears "particle number inversion", and passes through a positive feedback loop (to form a resonant cavity) Form the laser output. For high-power output fiber lasers, multimode double-clad fibers with thicker cores are usually used. Since the optical fiber is not single-mode, it participates in many laser oscillation modes in the fiber core, resulting in the fiber laser ...

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 Applications(China)
IPC IPC(8): H01S3/067H01S3/03G02B6/02
Inventor 张新海
Owner 深圳市鹏星光电科技有限公司
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