研究目的
To present a novel semi-analytical method utilising modal index analysis for modelling the field resonances of photonic crystal surface emitting lasers (PCSELs), demonstrating its advantages over other modelling techniques.
研究成果
The MIA method is versatile and yields reliable results for analyzing PCSELs, offering computational simplicity and the ability to calculate threshold gain. It has been used to explain experimental results and predict the characteristics of PCSELs with different sizes and boundary conditions. The study suggests that the mode position and shape can be controlled through in-plane external feedback, enabling all-electronic beam steering and beam shaping.
研究不足
The MIA method, while computationally lean and fast, neglects higher-order effects and does not include carrier effects in the model. It also approximates multimode generation at discontinuities by self-mode conditions.
1：Experimental Design and Method Selection:
The study employs a modal index analysis (MIA) technique for evaluating the optical field resonances of 2-D photonic crystals in PCSELs. The method is based on viewing the 2-D photonic crystal as a multilayer waveguide with periodic longitudinal discontinuities.
2：Sample Selection and Data Sources:
The study compares the MIA method with plane wave expansion (PWE) and finite difference time domain (FDTD) methods for validation.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned in the provided text.
4：Experimental Procedures and Operational Workflow:
The MIA technique is used to analyze the effect of external lateral feedback on PCSELs, including the simulation of far-field patterns and the study of threshold gain as a function of photonic crystal period.
5：Data Analysis Methods:
The study uses the transfer matrix method for eigenmode evaluation and compares the results with conventional techniques like PWE and FDTD.
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