52 citations · 65 across the 4 of their papers we have counts for
6 papers · 1 filter
Vector mode decay in atmospheric turbulence: a quantum inspired analysis
Isaac Nape, Nikiwe Mashaba, Nokwazi Mphuthi +3
Vector beams are inhomogeneously polarized optical fields with nonseparable, quantum-like correlations between their polarisation and spatial components, and hold tremendous promis…
All-Digital Stokes Polarimetry with a Digital Micro-mirror Device
Amogh Manthalkar, Isaac Nape, Najmeh Tabebordbar +4
Stokes polarimetry is widely used to extract the polarisation structure of optical fields, typically from six measurements, although it can be extracted from only four. To measure…
A compact single channel interferometer to study vortex beam propagation
Sruthy J. Lathika, A. Vijayakumar, Shanti Bhattacharya
We propose and demonstrate a single channel interferometer that can be used to study how vortex beams propagate. The interferometer consists of a multifunctional diffractive optica…
Dielectric cross-shaped resonator based metasurface for vortex beam generation in Mid-IR and THz wavelengths
Raghu Dharmavarapu, Ken-ichi Izumi, Ikufumi Katayama +7
Metasurfaces are engineered thin surfaces comprising two dimensional (2D) arrays of sub-wavelength spaced and sub-wavelength sized resonators. Metasurfaces can locally manipulate t…
All-dielectric metasurface for wavefront control at terahertz frequencies
Raghu Dharmavarapu, Soon Hock Ng, Shanti Bhattacharya +1
Recently, metasurfaces have gained popularity due to their ability to offer a spatially varying phase response, low intrinsic losses and high transmittance. Here, we demonstrate nu…
Engineering the axial intensity of Bessel beams
Raghu Dharmavarapu, Saulius Juodkazis, Shanti Bhattacharya
Bessel beams (BBs) appear immune to diffraction over finite propagation distances due to the conical nature of light propagation along the optical axis. This offers promising advan…