13 citations · 15 across the 4 of their papers we have counts for
5 papers · 1 filter
Shack Hartmann wavefront sensor with array of phase coded masks
Nitin Dubey, Ravi Kumar, Joseph Rosen
Shack-Hartmann wavefront sensors (SHWS) are generally used to measure the wavefront curvature of light beams. Measurement accuracy and the sensitivity of these sensors are importan…
Quantitative phase-contrast imaging: a bridge between qualitative phase-contrast and phase retrieval algorithms
Nathaniel Hai, Joseph Rosen
In the last five decades, iterative phase retrieval methods draw large amount of interest across the research community as a non-interferometric approach to recover quantitative ph…
SLM aided noninvasive imaging through thin scattering layers
Saswata Mukherjee, A. Vijayakumar, Joseph Rosen
We propose and demonstrate a new imaging technique to noninvasively see through scattering layers with the aid of a spatial light modulator (SLM). A relay system projects the incoh…
Binary square axicon with chiral focusing properties for optical trapping
Balasubramani Vinoth, Anand Vijayakumar, Mani Ratnam Rai +4
We introduce a novel phase-only diffractive optical element called chiral binary square axicon (CBSA). The CBSA is designed by linearly rotating the square half-period zones of the…
Incoherent digital holograms acquired by interferenceless coded aperture correlation holography system without refractive lenses
Manoj Kumar, A. Vijayakumar, Joseph Rosen
We present a lensless, interferenceless incoherent digital holography technique based on the principle of coded aperture correlation holography. The acquired digital hologram by th…