I‘ve designed a peculiar geometry of resonator laser in FDTD and placed a nano particle in vicinity of that subsequently calculated the optical forces on this particle by MST analyzer eventually found the optical forces enormous in order micro or more . how to refine my work to achieve the correct amount of calculated optical force on particle exclusively in order pico or femto newton?!
Dear friend Asma Molavi
To refine your work and achieve the correct amount of calculated optical force on particle exclusively in order pico or femto newton, you can try the following:
1. Increase the resolution of your simulation by decreasing the mesh size and increasing the number of mesh cells.
2. Increase the simulation time to ensure that you have captured all of the relevant physics.
3. Use a more accurate material model for your nanoparticle.
4. Use a more accurate model for your laser source.
5. Use a more accurate model for your boundary conditions.
You can also calculate optical force on a particle using Lumerical FDTD by integrating the Maxwell Stress Tensor over a closed boxed that surrounds the particle (Photocatalysis – Ansys Optics.....). You can visualize the F_total result to generate a plot of the total force in Newtons on the particle (Ring Resonator Simulated in Lumerical.......).
I hope this helps!
Source:
Optical force on a particle (2D) – Ansys Optics. https://optics.ansys.com/hc/en-us/articles/360042214494-Optical-force-on-a-particle-2D-.
Optical force on a particle (3D) – Ansys Optics. https://optics.ansys.com/hc/en-us/articles/360042214434-Optical-force-on-a-particle-3D-.
Ring resonator getting started - Design and initial simulation. https://optics.ansys.com/hc/en-us/articles/360042800293-Ring-resonator-getting-started-Design-and-initial-simulation.
How to set input power of Sources in Lumerical FDTD?. https://www.researchgate.net/post/How_to_set_input_power_of_Sources_in_Lumerical_FDTD.
III-V Semiconductor Optical Material Data Tool – Ansys Optics. https://optics.ansys.com/hc/en-us/articles/4411081333011-III-V-Semiconductor-Optical-Material-Data-Tool.
Ring Resonator Simulated in Lumerical MODE Solutions' Propagator. https://www.youtube.com/watch?v=_OlW0hP9rX8.
Accurate Time Domain Laser Modeling in Photonic Integrated ... - Lumerical. https://www.lumerical.com/learn/whitepapers/accurate-time-domain-laser-modeling-in-photonic-integrated-circuits/.
Optical pressure and numerical simulation of optical forces. https://opg.optica.org/abstract.cfm?URI=ao-56-12-3354.
Photocatalysis – Ansys Optics. https://optics.ansys.com/hc/en-us/articles/360042274854-Photocatalysis.
Trapping and manipulation of nanoparticles using multifocal optical .... https://www.nature.com/articles/s41598-017-14449-y/.
Ansys Lumerical FDTD | Simulation for Photonic Components. https://www.ansys.com/products/photonics/fdtd.
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