162 citations · 369 across the 37 of their papers we have counts for
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Non-adiabatic Modal Dynamics around Exceptional Points in an All-Lossy Dual-Mode Optical Waveguide: Towards Chirality Driven Asymmetric Mode-Conversion
Arnab Laha, Abhijit Biswas, Somnath Ghosh
We report a 1D planar optical waveguide with transverse distribution of inhomogeneous loss profile, which exhibits an exceptional point (EP). The waveguide hosts two leaky resonant…
Propagation and asymmetric behavior of optical pulses through time-dynamic loss-gain assisted media
Piyali Biswas, Harsh K. Gandhi, Vaibhab Mishra +1
We report an asymmetric behavior of optical pulses during their propagation through a time-varying linear optical medium. The refractive index of the medium is considered to be var…
Origin of third order exceptional singularities and its signature in successive state conversion
Sayan Bhattacherjee, Arnab Laha, Somnath Ghosh
We report an open three-state perturbed system with quasi-statically varying Hamiltonian depending on the topological parameters. The effective system hosts two second order except…
All-Lossy Quasi-Guided Dual-Mode Optical Waveguide Exhibiting Exceptional Singularities
Arnab Laha, Abhijit Biswas, Somnath Ghosh
We explore exceptional points (EP) in a dual-mode symmetric planar optical waveguide with transverse variation of inhomogeneous loss profile; where modal evolution alongside an EP…
Exceptional Points in an Specialty Microcavity: Interplay between State-Conversion and Cavity Control Parameters
Arnab Laha, Abhijit Biswas, Somnath Ghosh
Exploiting scattering-matrix in a gain-loss assisted optical-microcavity, interplay between asymmetric-state-conversion and cavity-control parameters around exceptional points is a…
Signature of phase singularities in diffusive regime in one dimensional disordered lattices: Interplay and qualitative analysis
Somnath Ghosh
Co-existence and interplay between mesoscopic light dynamics with singular optics in spatially random but temporally coherent disordered waveguide lattices is reported. Two CW ligh…