研究目的
To investigate the nonlocal effects in multilayered particles on a substrate and study the optical characteristics of 3D cavities of plasmonic nanolasers.
研究成果
The study demonstrates that accounting for nonlocal effects significantly reduces the surface plasmon resonance amplitude and the near-field intensity amplification factor in plasmonic nanolaser resonators. However, these factors can be enhanced by adjusting the cavity shell's material and thickness and the incident wave's direction, offering insights into optimizing plasmonic nanolaser performance.
研究不足
The study is limited to theoretical models and numerical simulations, with no experimental validation provided. The analysis focuses on specific configurations of plasmonic nanolasers, potentially limiting the generalizability of the findings to other designs or materials.
1：Experimental Design and Method Selection:
The study employs the discrete source method (DSM) generalized to account for nonlocal effects within the framework of the generalized nonlocal optical response (GNOR) model. The methodology involves constructing an approximate solution and a corresponding numerical algorithm to analyze the scattering characteristics and near fields of plasmonic nanolaser resonators.
2：Sample Selection and Data Sources:
The model used is based on the first experimental implementation of a spaser, featuring a gold nanosphere coated with a spherical silica shell on a substrate adjacent to a gain medium.
3：List of Experimental Equipment and Materials:
The study involves numerical simulations without specific experimental equipment, focusing on theoretical models and computational algorithms.
4：Experimental Procedures and Operational Workflow:
The numerical algorithm involves determining the vector of discrete source amplitudes by solving boundary value problems, computing near fields, and analyzing scattering characteristics in the far-field region.
5：Data Analysis Methods:
The analysis includes computing the scattering cross section (SCS) and the amplification factor for the field intensity near the shell surface, with comparisons made between models accounting for and neglecting nonlocal effects.
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