Primo André G, Carvalho Natália C, Kersul Cauê M, Frateschi Newton C, Wiederhecker Gustavo S, Alegre Thiago P Mayer
Applied Physics Department and Photonics Research Center, "Gleb Wataghin" Institute of Physics, University of Campinas, 13083-859, Campinas, São Paulo, Brazil.
Phys Rev Lett. 2020 Dec 4;125(23):233601. doi: 10.1103/PhysRevLett.125.233601.
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 the engineering of 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 could be observed.
尽管耗散光机械耦合产生了几个新颖的特性，但由于缺乏一种在光机械系统工程中捕捉非厄米性的简单形式体系，这种效应仍未得到充分探索。在本信函中，我们表明基于准正常模式的微扰理论能够正确预测色散和耗散光机械耦合。我们通过模拟以及与文献中报道的实验结果进行比较来验证我们的模型。最后，我们将这种形式体系应用于用于分子光机械学的等离子体系统，在该系统中可以观察到振动模式放大过程中的强耗散耦合特征。
