1 citations · 1 across the 7 of their papers we have counts for
7 papers
In-situ tuning of cavity dissipation and a topological transition in an atom-nanotip-cavity system
Taegyu Ha, Kiyanoush Goudarzi, Dowon Lee +6
We theoretically investigate a method for tuning a dissipation rate in an atom-cavity system. By inserting a nanotip into the cavity mode, we estimate that the cavity dissipation r…
Single-defect mode lasing in a non-Hermitian 1D trivial SSH lattice
Abouzar Gharajeh, Kiyanoush Goudarzi, Fargol Seifollahi +1
We demonstrate robust single-mode lasing in a non-Hermitian 1D trivial Su-Schrieffer-Heeger defective lattice. This structure exhibits a significantly lower threshold power compare…
Tolerance and breakdown of topological protection in a disordered waveguide
Kiyanoush Goudarzi, Moonjoo Lee
We consider a disordered waveguide consisting of trivial dielectric and non-trivial magnetically anisotropic material. A topologically-protected edge mode appears owing to the brok…
Highly-efficient broadband TE/TM polarization beam splitter
Kiyanoush Goudarzi, Doyoung Kim, Haewook Han
Highly-efficient broadband polarization beam splitters with small footprint and based on silicon photonics technology are of great importance in optical integrated circuits. In thi…
Inverse design of an all-dielectric digitized terahertz optical power splitter by particle swarm optimization method
Kiyanoush Goudarzi, Haewook Han
This letter proposes a 50:50 TE terahertz (THz) power splitter based on digitized metamaterials. The device is optimized using particle swarm optimization algorithm. The structure…
Ultra low loss broadband 1 2 optical power splitters with various splitting ratios
K. Goudarzi, S. Kim, I. Park +1
We designed Si-based all-dielectric 1 2 TE and TM power splitters with various splitting ratios and simulated them using the inverse design of adjoint and numerical 3D fin…
Ultra-High Normalized Bandwidth TE and TM Polarization Insensitive Terahertz Absorber with Graphene Disks Configuration
Omid Mohsen Daraei, Milad Rastkar Mirzaei, Kiyanoush Goudarzi +1
In this paper, we have proposed ultra-broadband terahertz absorber with three layers of periodic graphene disks arrays (PGDAs). A gold layer was utilized as backside reflector and…