arXiv subjects

Jaydeep Kumar Basu

Publications and source records attributed to Jaydeep Kumar Basu.

3 recordsLinked to original sources

arXiv2024

Purcell Enhancement of Spontaneous Emission of a Quantum Emitter on a Waveguide

We investigate the effect of a waveguide on an emitter spontaneous emission in its vicinity. The impact of various possible orientations of an emitter with respect to the waveguide surface is studied through simulations and compared with experimental demonstration. Quantum emitters are dip coated on waveguides and Purcell enhancement and a decrease in the lifetime of the emitter are observed. This study serves as a proof of concept for the Purcell effect offered by waveguides and helps ineffectively estimate the efficiency of waveguide-based evanescent sensors and quantum photonic applications

physics.optics↗

arXiv2019

Gold nanorod induced enhanced efficiency in luminescent solar concentrator device

We have observed significant changes in the edge emission of a luminescent solar concentrator device (LSC) consist of core shell Cd1-xZnxSe1-ySy quantum dots (QDs), and a monolayer of gold nanorods (GNRs) on the surface of LSC device. The observed changes show a nonlinear growth when another LSC of same thickness casted on the top of GNRs layer. The mechanism of plasmon-enhanced PL is mainly associated with the surface plasmon excitation which were found to be imprinted into the corresponding PL characteristics collected from the edge and back side of LSCs. The findings point to so far not recognized any application potentials of plasmonic LSC device.

physics.app-ph↗

arXiv2016

Nanoantenna enhanced radiative and anisotropic decay rates in monolayer-quantum dots

Nanoantenna enhanced ultrafast emission from colloidal quantum dots as quantum emitters is required for fast quantum communications. On chip integration of such devices require a scalable and high throughput technology. We report self-assembly lithography technique of preparing hybrid of gold-nanorods antenna over a com- pact CdSe quantum dot monolayer. We demonstrate resonant and off resonant gold nanorod antenna enhanced radiative and anisotropic decay. Extensive simulations explain the mechanism of the decay rates and the role of antenna in both random and a compact monolayer of quantum dots. The study could find applications in quantum dots display and quantum communications devices.

cond-mat.mes-hall↗