39 citations · 117 across the 15 of their papers we have counts for
15 papers
Comparative study of microscopy methods to assess fish intestinal microvilli
Ankit Butola, Luis E. Villegas-Hernández, Dhivya B. Thiyagarajan +3
The primary function of intestinal microvilli is to increase the surface area of the intestinal lining to maximize nutrient absorption. This is especially important as fish, like o…
Label-free correlative morpho-chemical tomography of 3D kidney mesangial cells
Ankit Butola, Biswajoy Ghosh, Jaena Park +6
Label-free characterization of biological specimens seeks to supplement existing imaging techniques and avoid the need for contrast agents that can disturb the native state of livi…
Taxonomy of hybridly polarized Stokes vortex beams
Gauri Arora, Ankit Butola, Ruchi Rajput +5
Structured beams carrying topological defects, namely phase and Stokes singularities, have gained extensive interest in numerous areas of optics. The non-separable spin and orbital…
Single-shot multispectral quantitative phase imaging using deep neural network
Sunil Bhatt, Ankit Butola, Anand Kumar +5
Multi-spectral quantitative phase imaging (MS-QPI) is a cutting-edge label-free technique to determine the morphological changes, refractive index variations and spectroscopic info…
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-resolution single-shot phase-shifting interference microscopy using deep neural network for quantitative phase imaging of biological samples
Sunil Bhatt, Ankit Butola, Sheetal Raosaheb Kanade +2
White light phase-shifting interference microscopy (WL-PSIM) is a prominent technique for high-resolution quantitative phase imaging (QPI) of industrial and biological specimens. H…
Multi-modal on-chip nanoscopy and quantitative phase image reveals the morphology of liver sinusoidal enodthelial cells
David A. Coucheron, Ankit Butola, Karolina Szafranska +6
Visualization of three-dimensional morphological changes in the subcellular structures of a biological specimen is one of the greatest challenges in life science. Despite conspicuo…
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…
High spatially sensitive quantitative phase imaging assisted with deep neural network for classification of human spermatozoa under stressed condition
Ankit Butola, Daria Popova, Dilip K Prasad +8
Sperm cell motility and morphology observed under the bright field microscopy are the only criteria for selecting particular sperm cell during Intracytoplasmic Sperm Injection (ICS…
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…