3 papers
physics.optics2026
Geometric Control of Visible Emitter Creation in Hexagonal Boron Nitride by Oblique Ion Irradiation
Sagar Chowdhury, Bhaveshkumar Kamaliya, Ramachandra Bangari +5
Ion irradiation creates optically active defects in wide-bandgap van der Waals materials, yet most approaches tune defect formation by varying the ion species, energy, or fluence w…
physics.app-ph2024
New design paradigm for highly efficient and low noise photodetector
Sagar Chowdhury, Rituraj, Srini Krishnamurthy +1
Achieving high quantum efficiency (QE) with low dark count is essential for highly sensitive photodetectors (PDs), including single photon avalanche detectors (SPADs). However, hig…
physics.optics2024
Resonant structure for improved directionality and extraction of single photons
Sagar Chowdhury, Rituraj, Srini Krishnamurthy +1
Fluorescent atomic defects, especially in dielectric materials, such as diamond are quite promising for several emerging quantum applications. However, efficient light extraction,…