Ultra-narrow linewidth integrated fiber laser based on distributed external feedback

A fiber laser and ultra-narrow linewidth technology, applied in the field of lasers, can solve problems such as the difficulty of achieving extreme compression of linewidth, and achieve the effects of suppressing spontaneous radiation, reducing costs, and enhancing stimulated radiation

Pending Publication Date: 2022-05-24
CHONGQING UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an ultra-narrow linewidth integrated fiber laser based on distributed external feedback to solve the problem that it is difficult to achieve the ultimate compression of linewidth by using a single-cavity optical feedback linewidth compression method while the current laser realizes single longitudinal mode output.

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
  • Ultra-narrow linewidth integrated fiber laser based on distributed external feedback
  • Ultra-narrow linewidth integrated fiber laser based on distributed external feedback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] In order for those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above objects, features, and advantages of the embodiments of the present invention more clearly understood, the following describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings. for further details.

[0029] In the description of the present invention, unless otherwise specified and limited, it should be noted that the term "connection" should be understood in a broad sense. It is directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms can be understood according to specific situations.

[0030] see figure 1 , is a schematic structural diagram of an embodiment of the ultra-narrow linewidth integrated fiber laser based on distributed external feedback of the present inventi...

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 provides an ultra-narrow linewidth integrated fiber laser based on distributed external feedback, which comprises a fiber laser main cavity and a distributed external feedback structure, and is characterized in that the fiber laser main cavity generates main cavity laser under the excitation of a pumping source and provides the main cavity laser to the distributed external feedback structure; the distributed external feedback structure generates a distributed feedback signal according to the main cavity laser and reversely transmits the distributed feedback signal back to the optical fiber laser main cavity; and the distributed feedback signal carries out extreme regulation and control on the performance parameters of the main cavity laser, so that the main cavity of the fiber laser outputs single-longitudinal-mode ultra-narrow linewidth laser. The output of the single longitudinal mode laser and the compression of the line width do not depend on cavity length adjustment any more, performance parameters of the main cavity laser are regulated and controlled through distributed feedback signals, the output of the single longitudinal mode laser can be achieved, the line width can be extremely compressed, and the laser is simple in structure and low in cost. And the integrated miniaturization development of the laser is facilitated.

Description

technical field [0001] The invention belongs to the field of lasers, in particular to an ultra-narrow linewidth integrated fiber laser based on distributed external feedback. Background technique [0002] Narrow linewidth lasers have the characteristics of high beam quality and good frequency stability, which are very attractive in various advanced laser applications. Fields such as optical communication, optical precision measurement, and medical diagnosis all require highly coherent tunable lasers to optimize their parametric performance. In most cases, lasers with excellent monochromaticity are used to meet these needs. However, a large number of dense longitudinal mode oscillations are generated in the current gain spectrum of lasers, because the longitudinal mode interval is narrow, and the gain and loss differences between modes are small, so a large number of longitudinal modes are activated, and mode competition makes it difficult for lasers to achieve single longit...

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): H01S3/067
CPCH01S3/067H01S3/0675
Inventor 朱涛
Owner CHONGQING UNIV
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