Optical forces through the effective refractive index.

@article{Rodrigues2017OpticalFT,
  title={Optical forces through the effective refractive index.},
  author={Janderson R Rodrigues and Vilson R Almeida},
  journal={Optics letters},
  year={2017},
  volume={42 21},
  pages={
          4371-4374
        }
}
Energy-based methods such as the dispersion relation (DR) and response theory of optical forces (RTOF) have been largely applied to obtain the optical forces in the nano-optomechanical devices, in contrast to the Maxwell stress tensor (MST). In this Letter, we apply first principles to show explicitly why these methods must agree with the MST formalism in linear lossless systems. We apply the RTOF multi-port to show that the optical force expression on these devices can be extended to analyze… 

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