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Optically pumped subwavelength-scale metallodielectric nanopatch resonators
Kyungmok Kwon1, Jong-Bum You1, Jaeho Shim1
1School of Electrical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Korea.
Scientific Reports
|August 24, 2016
Summary
Subwavelength semiconductor metal-optic resonators achieve lasing by suppressing radiation losses with extended metal layers. Temperature-dependent properties are crucial for modeling laser performance.
Area of Science:
- Optics
- Materials Science
- Nanotechnology
Background:
- Semiconductor nano-blocks typically exhibit high optical losses.
- Metal layers can confine light in optical cavities.
Purpose of the Study:
- To investigate subwavelength-scale semiconductor metal-optic resonators.
- To explore the effect of top metal plate size on optical confinement and lasing.
- To analyze self-heating effects on laser performance.
Main Methods:
- Fabrication of semiconductor metal-optic resonators on a metal substrate.
- Varying the size of top metal plates.
- Optical pumping for lasing.
- Investigation of self-heating effects.
Main Results:
- Metal layers transform leaky semiconductor nano-blocks into highly-confined optical cavities.
- Extended top metal layers significantly suppress radiation losses, enabling lasing.
- Self-heating effects and temperature-dependent material properties impact laser rate equations and performance.
Conclusions:
- Subwavelength semiconductor metal-optic resonators can achieve lasing by managing optical losses.
- Careful consideration of thermal effects is essential for optimizing these devices.
