Broadband saturable absorber, preparation method thereof and laser pulse based on device

A technology of saturable absorption and pulsed lasers, applied in the laser field, can solve problems such as difficult to achieve precise control, lack of practicability and application prospects, and easy to break, so as to improve photothermal stability, reduce photothermal effects, and improve damage The effect of the threshold

Inactive Publication Date: 2015-08-12
SOUTH CHINA NORMAL UNIVERSITY
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this micro-nano-fiber-gold nanorod type saturable absorber still has certain deficiencies in the actual use process, which is shown in: 1. The micro-nano fiber is tapered to several microns through bare fiber fusion, and in actual use easy to break during the process, making the device less fl

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
  • Broadband saturable absorber, preparation method thereof and laser pulse based on device
  • Broadband saturable absorber, preparation method thereof and laser pulse based on device
  • Broadband saturable absorber, preparation method thereof and laser pulse based on device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] The preparation method of the broadband saturable absorber based on the gold nanorod / silicon dioxide core-shell structure composite nanomaterial will be further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.

[0066] Step 1, 5 mL of 0.2 mol / L cetyltrimethylammonium bromide (CTAB) and 250 μL of 0.01 mol / L chloroauric acid (HAuCl 4 ) into 5 mL of ultrapure deionized water, stirred for 30 seconds to mix evenly; added 0.6 mL of 0.01 mol / L sodium borohydride solution, and stirred for 2 minutes until the solution turned dark brown. Mark this solution as gold seed solution;

[0067] Step 2, the cetyltrimethylammonium bromide (CTAB) of 30mL 0.2mol / L, the chloroauric acid (HAuCl) of 1.5mL 0.01mol / L 4 ), 40μL 0.5mol / L nitric acid (HNO 3 ) into 25 mL of ultrapure deionized water; then 360 μL of 0.08 mol / L ascorbic acid (AA) solution was added and stirred for 2 minutes until the solution became colorless. Lab...

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
Wavelengthaaaaaaaaaa
Wavelengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a broadband saturable absorber comprising a gold nanorod and a surface decoration material which coats the surface of the gold nanorod. A core-shell structure composite nano material is formed by the gold nanorod and the surface decoration material. According to the broadband saturable absorber, the damage threshold of a saturable absorber is greatly improved, and the stable operation of an ultrafast pulse can be realized.

Description

technical field [0001] The invention relates to the field of laser technology. Specifically, it relates to a broadband saturable absorber based on a gold nanorod / silica core-shell composite nanomaterial, a preparation method and a pulsed laser based on the device. Background technique [0002] Passively mode-locked fiber lasers provide a good platform for the generation of ultrafast laser pulses, and they have great application value in both industrial fields and basic research. In order to achieve passive mode locking, saturable absorbers are a key device in fiber lasers. Therefore, in order to develop high-performance saturable absorbers, various research groups have made great efforts. So far, both ultrashort pulses have been obtained in fiber lasers using saturable-like absorbers and real saturable absorbers. Saturable absorbers are generally realized by nonlinear effects, such as nonlinear polarization rotation (NPR) and nonlinear magnifying loop mirror (NALM). Altho...

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
IPC IPC(8): H01S3/11H01S3/067
Inventor 罗智超汪徐徳罗爱平徐文成
Owner SOUTH CHINA NORMAL UNIVERSITY
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