39 citations · 139 across the 12 of their papers we have counts for
12 papers
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…
High Space-bandwidth Product Label-free Examination of iPSC-derived Brain Organoids via Fourier Ptychographic Microscopy
Mikolaj Krysa, Mikolaj Rogalski, Piotr Arcab +7
Fourier ptychographic microscopy (FPM) is a promising quantitative phase imaging technique that enables high-resolution, label-free imaging over a large field-of-view. Here, we pre…
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…
High space-bandwidth in quantitative phase imaging using partially spatially coherent optical coherence microscopy and deep neural network
Ankit Butola, Sheetal Raosaheb Kanade, Sunil Bhatt +7
Quantitative phase microscopy (QPM) is a label-free technique that enables to monitor morphological changes at subcellular level. The performance of the QPM system in terms of spat…
A transparent waveguide chip for versatile TIRF-based microscopy and nanoscopy
Anish Priyadarshi, Firehun Tsige Dullo, Deanna L. Wolfson +6
Total internal reflection fluorescence microscopy (TIRF) has enabled low-background, live-cell friendly imaging of cell surfaces and other thin samples thanks to the shallow penetr…
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…
Deep learning architecture LightOCT for diagnostic decision support using optical coherence tomography images of biological samples
Ankit Butola, Dilip K. Prasad, Azeem Ahmad +6
Optical coherence tomography (OCT) is being increasingly adopted as a label-free and non-invasive technique for biomedical applications such as cancer and ocular disease diagnosis.…
Characterization of color cross-talk of CCD detectors and its influence in multispectral quantitative phase imaging
Azeem Ahmad, Anand Kumar, Vishesh Dubey +3
Multi-spectral quantitative phase imaging (QPI) is an emerging imaging modality for wavelength dependent studies of several biological and industrial specimens. Simultaneous multi-…
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…