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Telecom InP/InGaAs nanolaser array directly grown on (001) silicon-on-insulator
Monolithic InP/InGaAs nanolasers were developed on silicon-on-insulator (SOI) platforms, covering the C band for silicon photonics. This breakthrough enables nanoscale lasers operating at telecom wavelengths for integrated photonic circuits.
Area of Science:
- Optoelectronics
- Materials Science
- Nanotechnology
Background:
- Monolithic III-V laser integration on silicon is crucial for advanced silicon photonics.
- Scaling down laser footprints and achieving telecom wavelength operation remain key challenges.
Purpose of the Study:
- To develop monolithically integrated in-plane InP/InGaAs nanolasers on (001) silicon-on-insulator (SOI) platforms.
- To achieve laser operation across the entire C band (1.55 μm) at the nanoscale.
Main Methods:
- Selective-area growth of InGaAs quantum wells within InP nanoridges on patterned (001) SOI.
- Fabrication of air-cladded InP/Si optical cavities with varying lengths via lithography.
Main Results:
- Demonstrated monolithically integrated nanolaser arrays on (001) SOI.
- Achieved room-temperature operation covering the full C band telecommunication wavelengths.
- Successfully scaled down laser footprint to nanoscale dimensions.
Conclusions:
- Monolithic InP/InGaAs nanolasers on (001) SOI are a significant advancement for integrated silicon photonics.
- This work paves the way for fully integrated photonic circuits operating at telecom wavelengths.
- The developed nanolasers offer a compact and efficient alternative to off-chip laser bonding.
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