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Updated: Apr 12, 2026
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Stimulated Stokes and Antistokes Raman Scattering in Microspherical Whispering Gallery Mode Resonators
Published on: April 4, 2016
11.8K
Method for predicting whispering gallery mode spectra of spherical microresonators
Optics Express
|May 14, 2015
Summary
A new toolkit simulates whispering gallery modes in microspheres, guiding experiments for efficient light coupling. This advanced method offers greater flexibility than analytic models for optical resonator research.
Area of Science:
- Photonics and optical physics
- Computational electromagnetics
- Nanophotonics
Background:
- Whispering gallery modes (WGMs) are crucial for optical resonators.
- Efficiently exciting and detecting WGMs is vital for applications like biosensing.
- Existing analytic models have limitations in simulating complex excitation and detection scenarios.
Purpose of the Study:
- To develop a versatile three-dimensional Finite-Difference Time-Domain (FDTD) toolkit.
- To simulate whispering gallery modes (WGMs) of microspheres near a dipole source.
- To provide a guide for experimentalists seeking efficient WGM coupling and to compare FDTD results with analytic models.
Main Methods:
- Development of a full three-dimensional Finite-Difference Time-Domain (FDTD) simulation toolkit.
- Simulation of microsphere whispering gallery modes (WGMs) excited by a dipole source.
- Comparison of FDTD-derived spectra with those from established analytic models.
Main Results:
- The FDTD toolkit successfully simulates WGMs in microspheres.
- FDTD allows flux collection from diverse regions (e.g., disk-shaped), unlike analytic models.
- The customizability enables exploration of various mode excitation scenarios.
Conclusions:
- The FDTD toolkit offers a flexible and powerful alternative to analytic models for simulating WGMs.
- This method is valuable for investigating novel optical resonator properties.
- The toolkit aids in assessing the suitability of resonators for applications such as biosensing.
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