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Preparation of amorphous silicon-doped Y2O3 aerogel enabling nonlinear optical features for ultrafast photonics

  • 0School of Information Science and Engineering, Key Laboratory of Laser and Infrared System of Ministry of Education, Shandong University, Qingdao 266237, China.
Nanophotonics (berlin, Germany) +

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December 16, 2024

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December 16, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Researchers developed novel silicon-doped yttrium oxide (Y2O3) aerogels for advanced optical applications. These amorphous materials demonstrate excellent nonlinear optical properties, enabling versatile mode-locking operations in fiber lasers.

Area Of Science

  • Materials Science
  • Optics and Photonics

Background

  • Amorphous aerogels offer unique nanoscale 3D mesh structures for studying physicochemical properties.
  • Enhancing aerogel performance often involves integrating functional materials.

Purpose Of The Study

  • To fabricate amorphous silicon-doped Y2O3 aerogels using a post-gelation method.
  • To investigate the impact of silicon concentration on nonlinear optical properties.
  • To explore the application of these aerogels as saturable absorbers in fiber lasers.

Main Methods

  • Fabrication of amorphous silicon-doped Y2O3 aerogels via post-gelation under supercritical N2/EtOH atmosphere.
  • Characterization of nonlinear optical properties using 1-ps laser excitation at 1590 nm.
  • Integration of the silicon-doped Y2O3 aerogel as a saturable absorber (SA) into an erbium-doped fiber laser (EDFL).

Main Results

  • The silicon-doped Y2O3 aerogels exhibited significant nonlinear optical properties.
  • A maximum modulation depth of 1.65% with a saturation intensity of 0.78 MW/cm² was achieved.
  • Successful demonstration of various mode-locking operations (soliton, harmonic soliton molecules, dual-wavelength) in an EDFL.

Conclusions

  • Amorphous silicon-doped Y2O3 aerogels are effective nonlinear optical materials.
  • These aerogels show potential for ultrafast photonic and nonlinear optical applications.
  • The study provides a pathway for utilizing amorphous materials in future optical technologies.

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