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High Performance Plasmonic Nanolasers with External Quantum Efficiency Exceeding 10.

Suo Wang1, Hua-Zhou Chen1, Ren-Min Ma1,2

  • 1State Key Lab for Mesoscopic Physics and School of Physics , Peking University , Beijing 100871 , China.

Nano Letters
|November 14, 2018
PubMed
Summary
This summary is machine-generated.

We developed a method to measure the quantum efficiency of plasmonic nanolasers. This breakthrough enables high-performance devices with over 10% efficiency, advancing optical technologies.

Keywords:
Plasmonic nanolaserquantum efficiencysemiconductor lasersspasers

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Area of Science:

  • Photonics and Nanotechnology
  • Optics and Lasers

Background:

  • Plasmonic nanolasers offer sub-diffraction limit optical oscillation for applications in interconnects, sensing, and imaging.
  • Metallic absorption loss in plasmonic nanolasers leads to low external quantum efficiency and device degradation.
  • Direct characterization of plasmonic nanolaser quantum efficiency is challenging due to near-field emissions and limited power.

Purpose of the Study:

  • To develop a reliable method for characterizing the external quantum efficiency of plasmonic nanolasers.
  • To address the limitations in measuring quantum efficiency for these nanoscale devices.
  • To enable accurate performance evaluation and optimization of plasmonic nanolasers.

Main Methods:

  • Combined experimental measurements with theoretical calculations to determine external quantum efficiency.
  • Systematically optimized plasmonic nanolaser devices.
  • Developed a novel approach to overcome challenges in near-field emission characterization.

Main Results:

  • Demonstrated a method to accurately characterize the external quantum efficiency of plasmonic nanolasers.
  • Achieved high-performance plasmonic nanolasers with external quantum efficiency exceeding 10% at room temperature.
  • Provided a crucial metric for evaluating plasmonic nanolaser performance.

Conclusions:

  • The developed method successfully characterizes plasmonic nanolaser quantum efficiency.
  • High external quantum efficiency validates plasmonic nanolasers for practical applications.
  • This work clarifies performance metrics and supports applications in spectroscopy, interconnects, lighting, and communication.