Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Tunable Thulium-Holmium Co-doped Mode-Locked All-Fiber Laser in the 2 Micron Band

A laser and all-fiber technology, applied in the direction of solid-state lasers, etc., can solve the problems of increasing system operating costs and backup costs, high pumping efficiency, and low pumping efficiency, achieving reduced backup costs, good environmental stability, and reduced operating costs. cost effect

Active Publication Date: 2019-01-22
CHONGQING UNIV OF POSTS & TELECOMM
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current 2 micron fiber lasers have only one central wavelength, and the pumping efficiency is relatively low, which will increase the operating cost and backup cost of the system, while the tunable thulium-holmium co-doped mode-locked all-fiber laser can be realized with a Tunable fiber lasers replace multiple fixed-wavelength fiber lasers. At the same time, the use of thulium-holmium co-doped fiber as the gain medium also has the characteristics of low threshold and high pumping efficiency. This kind of tunable fiber laser can also be used as a tunable high-power fiber laser. source of seeds

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 Tunable Thulium-Holmium Co-doped Mode-Locked All-Fiber Laser in the 2 Micron Band
  • A Tunable Thulium-Holmium Co-doped Mode-Locked All-Fiber Laser in the 2 Micron Band
  • A Tunable Thulium-Holmium Co-doped Mode-Locked All-Fiber Laser in the 2 Micron Band

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0027] A 2-micron band tunable thulium-holmium co-doping mode-locked all-fiber laser adopts such as figure 2 The ring cavity structure shown mainly includes: a Raman fiber laser with a center wavelength of 1212 nm and an output power of 500 mW as a laser pump source 1; a 1212 / 2000 nm wavelength division multiplexer 2 as a pump optical combiner; The single-mode single-cladding thulium-holmium co-doped fiber 3 is used as the gain medium. The core diameter of the single-mode single-cladding thulium-holmium co-doped fiber 3 is 9 μm, the cladding diameter is 125 μm, and the numerical aperture is 0.16, among which, image 3 is the schematic diagram of the absorption spectrum of the thulium-holmium co-doped fiber, Figure 4is the schematic diagram of the emission spectrum of the thulium-holmium co-doped fiber; the three-ring polarization controller 4; the fiber isolator 10; the topological insulator saturable absorber 11 of the transmissive structure; The tuning range is between 17...

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 2-micron wave band tunable thulium-holmium codoped mode-locking all-fiber laser, and belongs to the field of laser techniques and non-linear optics. The 2-micron wave band tunable thulium-holmium codoped mode-locking all-fiber laser mainly comprises a laser pumping source, a wavelength division multiplexer, thulium-holmium codoped optical fiber, a circulator, an isolator, a saturable absorber, a saturable absorber mirror, a coupler, a polarization controller, a filter, passive optical fiber, and the like. As the thulium-holmium codoped optical fiber is taken as a gain medium and the saturable absorber and the saturable absorber mirror as passive mode-locking devices, and furthermore by changing the penetration wavelength of the tunable filter, output of 2-micro wave band, tunable wavelength and short pulse is achieved. Due to adoption of the whole structure of the 2-micron wave band tunable thulium-holmium codoped mode-locking all-fiber laser, all-fiber welding is achieved, and the 2-micron wave band tunable thulium-holmium codoped mode-locking all-fiber laser has the advantages of simple structure, good environment stability, high efficiency and the like, and is easy in industrial application.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a 2-micron waveband tunable thulium-holmium co-doping mode-locked all-fiber laser. Background technique [0002] Fiber lasers are lasers with optical fibers doped with rare earth elements as the gain medium. By doping different rare earth elements such as erbium, ytterbium, thulium, and holmium, the working band of the fiber laser can cover the mid-infrared band. Compared with semiconductor lasers, fiber lasers have the advantages of small size, low threshold, high efficiency, good beam quality, and no need to adjust the optical path. Among them, the 2-micron fiber laser has an important prospect in the fields of laser surgery, lidar, and ultrafast optics because its output wavelength is close to the absorption peak of hydroxyl H-O, which is within the safety range of the human eye. In recent years, with the deepening of related research on fiber lasers, the application of ...

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): H01S1/02
CPCH01S1/02
Inventor 王小发姜秋霞顾小辉彭晓玲张俊红夏青
Owner CHONGQING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com