142 citations · 384 across the 38 of their papers we have counts for
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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.…
Chip-based Resonance Raman Spectroscopy Using Tantalum Pentoxide Waveguides
David A. Coucheron, Dushan N. Wadduwage, G. Senthil Murugan +2
Blood analysis is an important diagnostic tool, as it provides a wealth of information about the patient health. Raman spectroscopy is a promising tool in blood analysis, but wides…
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…