3 papers
physics.optics2025
A comparative study of focusing with scalar and vector beams in an active Raman gain system
Partha Das, Tarak Nath Dey
We investigate the focusing characteristics of scalar and vector beams within an atomic medium. An active-Raman-gain configuration is employed to achieve significant Kerr nonlinear…
physics.optics2024
Linear and nonlinear propagation of cylindrical vector beam through a non-degenerate four level atomic system
Partha Das, Tarak Nath Dey
We investigate the phase-induced susceptibilities for both components of the probe vector beam (PVB) within an atomic system. The atoms are prepared in a non-degenerate four-level…
cond-mat.mes-hall2023
Structured beam controlled super-resolution in quantum dots via rapid adiabatic passage
Partha Das, Samit Kumar Hazra, Tarak Nath Dey
We theoretically investigate rapid adiabatic passage (RAP) based super-resolution microscopy in a two-level quantum dot (QD) system. The system consists of a QD interacting with tw…