Sourav Chandra

Indian Institute of Technology (Banaras Hindu University) Varanasi | BHU · Department of Physics

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 and experimentally demonstrate an imaging and phase recovery technique through a dynamic scattering medium using the Hanbury Brown–Twiss approach. A detailed theo...

The concept of polarization length is introduced and analyzed by using normalized Stokes correlation of the random field. In order to measure the polarization length, we use Stokes parameters of the random field and then estimated two-point Stokes correlations to determine polarization length

We propose and experimentally demonstrate a new method to measure the spatial polarization dynamics of laser speckle. This is realized by using the concept of the Poincare vector correlations and experimentally measured Stokes parameters. Two-point correlations of the Stokes parameters offer a new and stable experimental technique to determine the...

We propose and experimentally demonstrate an on-axis phase-shifting correlation holography technique with un-polarized light. The randomness of the un-polarized light is exploited to evaluate the higher-order polarization correlation and to consequently apply it in the reconstruction of the hologram from the randomness. A detailed theoretical analy...

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 reconstruct the complex-valued object from the random light field, and overcome twin image issues in the higher-order correlation holography without angular shift, phase shifting, an...