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Related Experiment Video

Updated: May 16, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
07:39

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

Surface plasmon enhanced electrically pumped random lasers.

Qian Qiao1, Chong-Xin Shan, Jian Zheng

  • 1State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888 Dongnanhu Road, Changchun, 130033, China.

Nanoscale
|December 4, 2012
PubMed
Summary
This summary is machine-generated.

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Researchers achieved electrically pumped random lasing in gold/magnesium oxide/zinc oxide structures. Adding silver nanoparticles significantly lowered the lasing threshold by enabling resonant coupling, enhancing random laser performance.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Random lasing offers potential for low-cost coherent light sources.
  • Achieving low thresholds in electrically pumped random lasers remains a challenge.

Purpose of the Study:

  • To investigate electrically pumped random lasing in Au/MgO/ZnO structures.
  • To enhance random lasing performance by incorporating silver nanoparticles.

Main Methods:

  • Fabrication of Au/MgO/ZnO structures.
  • Incorporation of silver nanoparticles with overlapping extinction and emission spectra.
  • Electrical pumping to induce random lasing.

Main Results:

  • Electrically pumped random lasing was successfully demonstrated in Au/MgO/ZnO.

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  • Incorporating Ag nanoparticles reduced the lasing threshold from 63 mA to 21 mA.
  • The threshold reduction is attributed to resonant coupling between carriers and silver surface plasmons.

    • Conclusions:

    • Silver nanoparticles effectively enhance electrically pumped random lasing in Au/MgO/ZnO.
    • Surface plasmon resonance plays a key role in reducing the lasing threshold.
    • This work presents a promising approach for developing efficient random laser devices.