39 citations · 139 across the 12 of their papers we have counts for
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Lateral shearing optical diffraction tomography of brain organoid with reduced spatial coherence
Pawel Goclowski, Julianna Winnik, Vishesh Dubey +6
Optical diffraction tomography (ODT) is a powerful technique for quantitative, label-free reconstruction of the three-dimensional refractive index (RI) distribution of biological s…
Label-free chip-based evanescent light scattering super-resolution and superior-contrast optical microscopy (cELS)
Nikhil Jayakumar, Firehun T Dullo, Vishesh Dubey +7
Chip-based Evanescent Light Scattering (cELS) utilizes the multiple modes of a high-index contrast optical waveguide for near-field illumination of unlabeled samples, thereby repos…
High throughput spatially sensitive single-shot quantitative phase microscopy
Azeem Ahmad, Vishesh Dubey, Nikhil Jayakumar +7
High space-bandwidth product with high spatial phase sensitivity is indispensable for a single-shot quantitative phase microscopy (QPM) system. It opens avenue for widespread appli…
Influence of laser spot size at diffuser plane on the longitudinal spatial coherence function of optical coherence microscopy system
Kashif Usmani, Azeem Ahmad, Rakesh Joshi +3
Coherence properties and wavelength of light sources are indispensable for optical coherence microscopy/tomography as they greatly influence the signal to noise ratio, axial resolu…
Highly stable common-path quantitative phase microscope for biomedical imaging
Azeem Ahmad, Vishesh Dubey, Ankit Butola +2
High temporal stability is the primary requirement of any quantitative phase microscope (QPM) systems for the early stage detection of various human related diseases. The high temp…
Sub-nanometer height sensitivity by phase shifting interference microscopy under ambient environmental fluctuations
Azeem Ahmad, Vishesh Dubey, Ankit Butola +3
Phase shifting interferometric (PSI) techniques are among the most sensitive phase measurement methods. Owing to its high sensitivity, any minute phase change caused due to environ…
Study of longitudinal coherence properties of pseudo thermal light source as a function of source size and temporal coherence
Azeem Ahmad, Tanmoy Mahanty, Vishesh Dubey +3
In conventional OCT, broadband light sources are generally utilized to obtain high axial resolution due to their low temporal coherence (TC) length. Purely monochromatic (i.e., hig…