arXiv subjects

Sanjeeb Dey

Publications and source records attributed to Sanjeeb Dey.

2 recordsLinked to original sources

arXiv2017

Coherent Perfect Absorption: an electromagnetic perspective

We present a simple closed expression for determining the condition for Coherent Perfect Absorption derived through electromagnetic wave treatment and interface boundary conditions. Apart from providing physical insight this expression can be used to estimate the values of various parameters required for observation of coherent perfect absorption in a given medium characterized by a complex dielectric constant. The results of the theoretical expression are found to be in good agreement with those obtained through numerical simulations.

physics.optics↗

arXiv2014

Study of Coherent Perfect Absorption Using Gaussian Beam in a Composite Medium

There is a study of coherent perfect absorption (CPA) in composite medium (CM) which is made of metal-dielectric composition. The CM, an orthorhombic shaped slab, is illuminated by two identical Gaussian beams (GB) incident at equal angle of incidence and focused on the two interfaces between wall of slab and air from opposite side. It has determine the necessary conditions required for CPA and shows that perfect CPA is possible with GBs. Author also shows broader beams exhibit more absorption than comparatively tightly focused beams.

physics.optics↗