4 papers
Hybrid Si-GST Polarization-Insensitive Dynamically Tunable Bifocal Metalens Operating at 1.55-m Wavelength
Dipika Rani Nath, Sadid Muneer, Sajid Muhaimin Choudhury
Metasurfaces have become a cornerstone of flat-optics, enabling precise control over light propagation through nanoengineered materials. Dynamic and reconfigurable metalenses are k…
Harnessing Topological Valley-Hall States in Photonic Crystals for Label-Free Refractive-Index Discrimination of Cancer Cell Lines
Junayet Hossain, Sajid Muhaimin Choudhury, Mohammed Imamul Hassan Bhuiyan
Topological photonic crystals (TPhCs) are the photonic analogs of topological insulators, inspired by the quantum Hall effect and its variants, including the integer, spin, and val…
Efficiency Enhancement of c-Si/TiO Heterojunction Thin Film Solar Cell Using Hybrid Metal-Dielectric Nanostructures
Soikot Sarkar, Sajid Muhaimin Choudhury
The hybrid metal-dielectric nanostructures (HMDN) are promising candidates to address the ohmic loss by conventional nanostructures in photovoltaic applications by strong confineme…
Lithium Niobate Photonic Topological Insulator-based Multi-Wavelength Optical Demultiplexer with Piezoelectric Switch-Off
Prithu Mahmud, Kaniz Fatema Supti, Sajid Muhaimin Choudhury
Photonic topological insulators provide unidirectional, robust, wavelength-selective transport of light at an interface while keeping it insulated at the bulk of the material. The…