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arXiv 2205.14435physics.opticsquant-ph
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强聚焦光学腔中高阶模的计算和实验分析

A Computational and Experimental Analysis of Higher Order Modes in a Strongly Focusing Optical Cavity

Mehmet Öncü, Mohsen Izadyari, Özgür E. Müstecaplıoğlu, Kadir Durak

摘要:

工作在近同心区域的光学腔是进行高精度实验的基本工具,如腔QED应用。不幸的是,强聚焦状态易于激发高阶模式。对于现实的强聚焦腔,避免高阶模激发是具有挑战性的,并且如果这些模间隔很近,则整体腔线宽显著变宽。在这项研究中,提供了一个计算方法旁边的实验为光学模式分解成腔本征模合理的近似。它表明,它是可能的,以重建的强度和光谱分布的腔传输,与所提供的模型。因此,可以对真实的近同心腔进行更完整的处理。

英文摘要:

Optical cavities operating in the near-concentric regime are the fundamental tools to perform high precision experiments like cavity QED applications. A strong focusing regime unfortunately is prone to excite higher-order modes. Higher-order mode excitation is challenging to avoid for the realistic strong focusing cavities, and if these modes are closely spaced, overall cavity linewidth gets significantly broadened. In this study, a computational method alongside the experiment is provided for the optical mode decomposition into cavity eigenmodes with justified approximations. It is shown that it is possible to recreate the intensity and spectral profile of the cavity transmission, with the provided model. As a result, a more complete treatment of the realistic near-concentric cavities can be done.

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