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

Porous channel hollow micro-knot echo wall mode resonant cavity and preparation method thereof

A technology of whispering gallery mode and resonant cavity, which is applied to the structure/shape of optical resonators, the structure/shape of active medium, and laser components, etc. It can solve the problems of limited gain medium, laser slope efficiency and low output power, etc. Achieve the effect of high slope efficiency, low threshold, high power whispering gallery laser output

Active Publication Date: 2018-11-27
SOUTH CHINA UNIV OF TECH
View PDF12 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, micro-junction whispering gallery microcavities are all made of solid active micro-nano fibers. The applicable gain medium of this micro-junction whispering gallery micro-cavity is limited, and only the laser output of active micro-nano fibers can be realized.
Moreover, although low-threshold laser output can be obtained in the whispering gallery mode microcavity, the slope efficiency and output power of the laser are generally low.

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
  • Porous channel hollow micro-knot echo wall mode resonant cavity and preparation method thereof
  • Porous channel hollow micro-knot echo wall mode resonant cavity and preparation method thereof
  • Porous channel hollow micro-knot echo wall mode resonant cavity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Choose a two-hole quartz capillary (the outer diameter is 3 mm, and the diameter of the two inner holes is about 0.5 mm), and the length is cut to about 5 cm. Melt the middle part with a heating source such as a carbon dioxide laser or a hydrogen-oxygen flame, clamp both ends of the capillary with clamps, and stretch to both ends with a stepping motor at the same time to obtain hollow micro-nano fibers with a diameter of 0.5 μm to 10 μm and a length of about 1mm ~ 10mm.

[0032] (2) The obtained micro-nanofibers are then knotted into a hollow micro-knot cavity with a diameter of about 250 μm by micro-operation.

[0033] (3) Then the Nd-doped NaYF 4 Nanocrystalline liquid gain medium (nanocrystalline diameter is about 5nm-50nm, dispersed in cyclohexane solution, solution concentration is 0.2μM-5μM) is injected into the fiber channel of the hollow microjunction cavity in step (2).

[0034] (4) Draw the commercial optical fiber into a tapered optical fiber on the tap...

Embodiment 2

[0038] (1) Choose a four-hole quartz capillary (outer diameter is 3.5 mm, and four inner holes have a diameter of about 0.5 mm), and the length is cut to about 5 cm. Melt the middle part with a heating source such as a carbon dioxide laser or a hydrogen-oxygen flame, clamp both ends of the capillary with clamps, and stretch to both ends with a stepping motor at the same time to obtain hollow micro-nano fibers with a diameter of 0.5 μm to 10 μm and a length of about 1mm ~ 10mm.

[0039] (2) The obtained micro-nanofibers are then knotted into a hollow micro-knot cavity with a diameter of about 250 μm by micro-operation.

[0040] (3) Then the Nd-doped NaYF 4 Nanocrystalline liquid gain medium (nanocrystalline diameter is about 5nm-50nm, dispersed in cyclohexane solution, solution concentration is 0.2μM-5μM) is injected into the fiber channel of the hollow microjunction cavity in step (2).

[0041] (4) Pull the commercial optical fiber into a tapered optical fiber on the tapered...

Embodiment 3

[0045] (1) Choose a two-hole quartz capillary (the outer diameter is 3 mm, and the diameter of the two inner holes is about 0.5 mm), and the length is cut to about 5 cm. Melt the middle part with a heating source such as a carbon dioxide laser or a hydrogen-oxygen flame, clamp both ends of the capillary with clamps, and stretch to both ends with a stepping motor at the same time to obtain hollow micro-nano fibers with a diameter of 0.5 μm to 10 μm and a length of about 1mm ~ 10mm.

[0046] (2) The obtained micro-nanofibers are then knotted into a hollow micro-knot cavity with a diameter of about 250 μm by micro-operation.

[0047] (3) Then, the Er and Yb co-doped YOF nanocrystal liquid gain medium (the diameter of the nanocrystal is about 5nm-50nm) is dispersed in the cyclohexane solution, and the solution concentration is 0.2μM- 5 μM) into the hollow microjunction cavity in step (2).

[0048] (4) On the tapered platform, the commercial optical fiber is drawn into a tapered ...

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

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the optical device field, and discloses a porous channel hollow micro-knot echo wall mode resonant cavity and a preparation method thereof. The preparation method of the porous channel hollow micro-knot echo wall mode resonant cavity includes the steps: drawing the middle portion of a porous glass capillary tube into a hollow micro-nano fiber having an outer diameter of 0.5 to 10 mu m through a melt drawing method, and then forming a hollow micro-knot cavity by micro-operation knotting; and injecting a liquid gain medium into a fiber pore channel of the hollow micro-knot cavity by means of a mode of capillary force suction or external force injection, and then coupling with the tapered fiber, and packaging to obtain a porous channel hollow micro-knot echo wall moderesonant cavity. The preparation process of the preparation method is simple, and the prepared hollow micro-knot cavity can be injected with various liquid gain media by capillary force suction or external force injection, and the obtained porous channel hollow micro-knot echo wall mode resonant cavity has multiple gain channels, thus realizing low threshold and high slope efficiency, and high power echo wall laser output.

Description

technical field [0001] The invention belongs to the field of optical devices, in particular to a multi-channel hollow micro-junction whispering gallery mode resonator and a preparation method thereof. Background technique [0002] Whispering gallery optical microcavities have extremely high quality factors and extremely small mode volumes, which can confine light in the cavity and enhance the interaction between light and matter, and have important applications in the fields of integrated optical circuits, information processing, and sensing. prospect. The micro-knotted whispering gallery micro-cavity is a ring resonator with a diameter of tens to hundreds of microns formed by knotting micro-nano fibers on a micro-manipulation platform. Compared with the traditional semiconductor-etched micro-optical cavity, the micro-junction whispering gallery micro-cavity has the advantages of simple structure, convenient operation, and low cost, and can meet the application requirements...

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): H01S3/067H01S3/08
CPCH01S3/06708H01S3/08013
Inventor 董国平欧阳天昶康世亮蔡振禄邱建荣
Owner SOUTH CHINA UNIV OF TECH
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