Polarization singularities in superposition of vector beams

S Vyas, Y Kozawa, S Sato - Optics Express, 2013 - opg.optica.org
We present a systematic study of the superposition of two vector Laguerre-Gaussian (LG)
beams. Propagation depended field distribution obtained from the superposition of two vector …

Generation of radially polarized Bessel–Gaussian beams from c-cut Nd:YVO4 laser

S Vyas, Y Kozawa, S Sato - Optics Letters, 2014 - opg.optica.org
We experimentally demonstrate the generation of radially polarized Bessel–Gaussian beams
from a c-cut Nd:YVO_4 laser with a hemispherical cavity configuration by proper mode …

Varifocal metalens for optical sectioning fluorescence microscopy

Y Luo, CH Chu, S Vyas, HY Kuo, YH Chia… - Nano Letters, 2021 - ACS Publications
Fluorescence microscopy with optical sectioning capabilities is extensively utilized in biological
research to obtain three-dimensional structural images of volumetric samples. Tunable …

[HTML][HTML] Bronchiectasis in India: results from the European multicentre bronchiectasis audit and research collaboration (EMBARC) and respiratory research network of …

…, A Shah, A Shah, N Dutt, H Garg, S Vyas… - The Lancet Global …, 2019 - thelancet.com
Background Bronchiectasis is a common but neglected chronic lung disease. Most
epidemiological data are limited to cohorts from Europe and the USA, with few data from low-income …

Interferometric optical vortex array generator

S Vyas, P Senthilkumaran - Applied optics, 2007 - opg.optica.org
Two new interferometric configurations for optical vortex array generation are presented.
These interferometers are different from the conventional interferometers in that they are …

Self-healing of tightly focused scalar and vector Bessel–Gauss beams at the focal plane

S Vyas, Y Kozawa, S Sato - JOSA A, 2011 - opg.optica.org
The property of self-healing at the focal plane for both scalar and vector Bessel–Gauss (BG)
beams is investigated in the tight focusing condition. For the BG beam, which is partially …

Detection of phase singularity using a lateral shear interferometer

DP Ghai, S Vyas, P Senthilkumaran… - Optics and Lasers in …, 2008 - Elsevier
We demonstrate use of lateral shear interferometry for the detection of phase singularities in
optical fields. Existing interferometric methods of vortex detection entail a separate …

Soft computing approach for rainfall-runoff modelling: a review

V Chandwani, SK Vyas, V Agrawal, G Sharma - Aquatic Procedia, 2015 - Elsevier
Enormous cost and manpower utilization encountered in constructing a water resource
project demands a great deal of attention in devising precise Rainfall-Runoff models for its …

Metasurface‐based abrupt autofocusing beam for biomedical applications

Y Luo, ML Tseng, S Vyas, HY Kuo, CH Chu… - Small …, 2022 - Wiley Online Library
Manipulation and precise delivery of optical energies in the regions of interest within
specimens require different strategies. Hence, proper control of input beam parameters is a …

[HTML][HTML] Meta-lens light-sheet fluorescence microscopy for in vivo imaging

Y Luo, ML Tseng, S Vyas, TY Hsieh, JC Wu… - …, 2022 - degruyter.com
Light-sheet fluorescent microscopy has become the leading technique for in vivo imaging in
the fields of disease, medicine, and cell biology research. However, designing proper …