2025 : 10 : 3
Masoud Rezvani Jalal

Masoud Rezvani Jalal

Academic rank: Assistant Professor
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Education: PhD.
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Faculty: science
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Research

Title
Simulation and computational validation of an optical cavity composed of point dipoles
Type
Presentation
Keywords
Simulation, optical cavity, point dipoles
Year
2025
Researchers Gita Beyranvand ، Peyman Karami ، Masoud Rezvani Jalal

Abstract

Optical cavities are devices used to resonate specific frequencies of light. Various optical cavities exist such as Fabry-Perot, whispering-gallery-mode, plasmonic and etc. One of the best places where cavities play role is in lasers. The working mechanism of all cavities is such that a radiation source re-receives part of its radiation through mirrors present in the arrangement, allowing for amplification and re-emission. In other words, presence of feedback systems within a cavity is necessary for resonance. Design of new cavities, their characterization, and finding novel applications (especially in the fields of lasers, sensors, and more) are among the essential fields of photonics. In this paper, we propose a new cavity based on point dipole emitters, simulate its resonance modes, and validate the resonance process. The general schematic of the problem considers at least three dipoles where two serve as mirrors and one acts as an emitter. Using the dipole radiation formulation and considering an incoming light this system is simulated. The radiation re-emitted by these dipoles leads to an equilibrium state, and the stable dipole moments are obtained through a computer code. This code determines the radiation characteristics of this setup. Subsequently, using the Poynting vector and the electromagnetic flux output from a hypothetical spherical surface, the amount of emitted energy is calculated.