研究目的
To propose a miniaturized nanowire laser with high end-facet re?ection by integrating an Ag grating between the nanowire and the substrate, aiming to lower the threshold and reduce the dimensions for on-chip information systems and networks.
研究成果
The proposed metal grating with a short period provides high reflection for the light wave propagating inside the nanowire, significantly lowering the threshold gain and reducing the nanowire's length. This advancement is promising for the realization of miniaturized lasers in on-chip sensing, optical interconnection, and computing systems.
研究不足
The study is limited by the simulation approach, which may not fully capture all physical phenomena in real-world applications. Additionally, the practical fabrication of such miniaturized structures with precise dimensions could be challenging.
1：Experimental Design and Method Selection:
The study employs the finite elements method (FEM) for numerical simulation of the reflection and cavity properties of the GaAs nanowire with an Ag grating.
2：Sample Selection and Data Sources:
The study focuses on GaAs nanowires with diameters varying from 200 to 300 nm, integrated with an Ag grating.
3：List of Experimental Equipment and Materials:
The setup includes GaAs nanowires, Ag grating, silica substrate, and Au cap.
4：Experimental Procedures and Operational Workflow:
The Ag grating is placed between the silica substrate and the nanowire to enhance end-facet reflection. The Au cap provides high reflection at the other end.
5：Data Analysis Methods:
The reflection and cavity properties are analyzed using FEM simulations to determine reflectivity and threshold gain.
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