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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
Summary
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.
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.
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