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arXiv 2006.00692physics.optics
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耗散和色散光力学的准正规模微扰理论

Quasinormal-mode perturbation theory for dissipative and dispersive optomechanics

André G. Primo, Natália C. Carvalho, Cauê M. Kersul, Newton C. Frateschi, Gustavo S. Wiederhecker, Thiago P. Mayer Alegre

摘要:

尽管从耗散光机械耦合产生的几个新的功能,这种效果仍然大大未开发,由于缺乏一个简单的形式主义,捕捉非厄米性的光机械系统。在这封信中,我们表明,准正规模式为基础的微扰理论是能够正确地预测色散和耗散光机耦合。我们验证我们的模型,通过模拟,并与文献中报道的实验结果进行比较。最后,我们将这种形式主义的等离子体系统,用于分子光学力学,在那里观察到的振动模式的放大强耗散耦合签名。

英文摘要:

Despite the several novel features arising from the dissipative optomechanical coupling, such effect remains vastly unexplored due to the lack of a simple formalism that captures non-Hermiticity in optomechanical systems. In this Letter, we show that quasinormal-mode-based perturbation theory is capable of correctly predicting both dispersive and dissipative optomechanical couplings. We validate our model through simulations and also by comparison with experimental results reported in the literature. Finally, we apply this formalism to plasmonic systems, used for molecular optomechanics, where strong dissipative coupling signatures in the amplification of vibrational modes are observed.

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