Resolution enhancement in quantitative phase microscopy

V Micó, J Zheng, J Garcia, Z Zalevsky… - Advances in Optics and …, 2019 - opg.optica.org
Quantitative phase microscopy (QPM), a technique combining phase imaging and
microscopy, enables visualization of the 3D topography in reflective samples, as well as the …

Phase recovery with intensity and polarization correlation

T Sarkar, S Chandra, RK Singh - Progress in Optics, 2023 - Elsevier
The challenge of phase recovery from the experimentally available magnitude of the signal
appears in various fields of science and engineering. To prepare a broad framework and …

Increasing field of view and signal to noise ratio in the quantitative phase imaging with phase shifting holography based on the Hanbury Brown-Twiss approach

L Chen, Z Chen, RK Singh, RV Vinu, J Pu - Optics and Lasers in …, 2022 - Elsevier
Quantitative phase imaging (QPI) plays an essential role in exploring properties of objects
exemplified by transparent and absorption-free samples. Within the realm of QPI, the …

Wide field fluorescence epi-microscopy behind a scattering medium enabled by speckle correlations

M Hofer, C Soeller, S Brasselet, J Bertolotti - Optics express, 2018 - opg.optica.org
Fluorescence microscopy is widely used in biological imaging, however scattering from
tissues strongly limits its applicability to a shallow depth. In this work we adapt a …

Imaging through scattering media with the auxiliary of a known reference object

W Yang, G Li, G Situ - Scientific Reports, 2018 - nature.com
Imaging through scattering media has been one of the main challenges in optics, and are
encountered in many different disciplines of sciences, ranging from biology, mesoscopic …

Noninvasive three-dimensional imaging through scattering media by three-dimensional speckle correlation

Y Okamoto, R Horisaki, J Tanida - Optics letters, 2019 - opg.optica.org
We present a method for noninvasive three-dimensional imaging through scattering media
by using a three-dimensional memory effect in scattering phenomena. In the proposed …

Holography with higher-order Stokes correlation

T Sarkar, V Tiwari, S Chandra, NS Bisht, RK Singh - Physical Review A, 2022 - APS
We present and experimentally demonstrate a holography technique with a higher-order
Stokes correlation of the random light field. The proposed technique is capable to …

Holographic imaging through a scattering layer using speckle interferometry

AS Somkuwar, B Das, RV Vinu, YK Park, RK Singh - JOSA A, 2017 - opg.optica.org
Optical imaging through complex scattering media is one of the major technical challenges
with important applications in many research fields, ranging from biomedical imaging to …

Lensless Fourier transform holography for coherence waves

RK Singh, S Vyas, Y Miyamoto - Journal of Optics, 2017 - iopscience.iop.org
Coherence functions behave like a wave and follow two–four dimensional wave equations.
Utilizing this feature, we propose a lensless Fourier transform holography for coherence …

Hanbury Brown–Twiss approach for imaging through a dynamic scattering medium

S Chandra, T Sarkar, R Kumar, B Das, RK Singh - Optics Letters, 2023 - opg.optica.org
The Hanbury Brown–Twiss approach, associated with the correlation of intensity fluctuations
at two different points in a wave field, unveils fundamental aspects of light. Here, we propose …