Patent &Publications :

2022

L. Chen, Z. Chen, Rakesh Kumar Singh, R.V. Vinu, and J. Pu, Opt. Laser. In Eng. 148 (2022) 106771.
Joseph Rosen, Hilton B. de Aguiar, Vijayakumar Anand, YoonSeok Baek, Sylvain Gigan, Ryoichi Horisaki, Hervé Hugonnet, Saulius Juodkazis, KyeoReh Lee, Haowen Liang, Yikun Liu, Stephan Ludwig, Wolfgang Osten, YongKeun Park, Giancarlo Pedrini, Tushar Sarkar, Johannes Schindler, Alok Kumar Singh, Rakesh Kumar Singh, Guohai Situ, Mitsuo Takeda, Xiangsheng Xie, Wanqin Yang, Jianying Zhou; Applied Physics B, 2022, 128, 49.
SK Pal, RK Singh, P Senthilkumaran, Journal of optics
Aditya Chandra Mandal, Tushar Sarkar, Zeev Zalevsky & Rakesh Kumar Singh; Scientific Reports volume 12, Article number: 4564 (2022)
Tushar Sarkar, Reajmina Parvin, Maruthi M. Brundavanam, Rakesh Kumar Singh, Volume 155, 107065 (2022)
Tushar Sarkar, Vipin Tiwari, Sourav Chandra, Nandan S. Bisht, and Rakesh Kumar Singh, Phys. Rev. A 106, 013508 (2022)
Tushar Sarkar, Sourav Chandra, Vipin Tiwari, Nandan S. Bisht, Bhargab Das, Rakesh Kumar Singh, Opt. Lett. 47 (2022) , 4953
Manisha, Vipin Tiwari, Nandan S Bisht, Bhargab Das, Rakesh Kumar Singh, Opt. Commun. 528 (2023) 129002.
Manisha, Mohit Rathor, Rakesh Kumar Singh, IOP Publishing, J. Opt. 25 (2023) 025701.
Tushar Sarkar, Rakesh Kumar Singh, Applied Physics B, 129, Article number: 13 (2023)

Roadmap on chaos-inspired imaging technologies (CI2-Tech)

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

Focal intensity landscapes of tightly focused spatially varying bright ellipse fields

Structured transmittance illumination coherence holography

Measuring obscured OAM spectrum using Stokes fluctuations in a non-interferometric approach

Holography with higher-order Stokes correlation

On-axis phase-shifting correlation holography with un-polarized light

Ghost diffraction: A spatial statistical approach

Single shot and speckle free reconstruction of orthogonal polarization modes with a tuneable beam displacer

Stokes correlation to estimate topological charge from the speckle pattern

2021

Huang, Y.; R.V., V; Chen, Z.; Sarkar, T.; Singh, R.K.; Pu, J. Appl. Sci. 2021, 11, 12167.
L. Chen, Rakesh Kumar Singh, R. V. Vinu, Z. Chen, and J. Pu, (IOP) New J. Phys. 23 (2021) 113034
Tushar Sarkar, Reajmina Parvin, Maruthi M. Brundavanam, and Rakesh Kumar Singh, Opt. Lett. 46 (2021) 5546.
Tushar Sarkar, Reajmina Parvin, Maruthi M. Brundavanam, and Rakesh Kumar Singh, Phys. Rev. A 104 (2021) 013525
Tushar Sarkar, Aditya C. Mandal, Chen Ziyang, Jixiong Pu, and Rakesh Kumar Singh, Laser & Optoelectronics Progress 58 (2021) 10.
L. Chen, Rakesh Kumar Singh, A. Dogariu, Z. Chen, and Jixiong Pu, Chin. Opt. Lett. 19 (2021) 022603.

Unscrambling OAM mode using digital phase-shifting in the Stokes fluctuations

Higher-order Stokes-parameter correlation to restore the twisted wave front propagating through a scattering medium

Correlation Holography with A Single-Pixel Detector A Review

Estimating topological charge of propagating vortex from single-shot non-imaged speckle

A wavefront division multiplexing holographic scheme and its application in looking through diffuser

Recovery and Characterization of Orbital Angular Momentum Modes with Ghost Diffraction Holography

2020

R. V. Vinu, Z. Chen, Rakesh Kumar Singh, and Jixiong Pu, Optica 7 (2020) 1697.
Vipin Tiwari, Surya Kumar Gautam, Dinesh N. Naik, Rakesh Kumar Singh, and Nandan S Bisht, Appl. Opt. 59 (2020) 2024.
A. Roy, Rakesh Kumar Singh, and Maruthi M Brundavanam, J. Opt. (IOP) 22 (2020) 125603.
S. K. Gautam, Rakesh Kumar Singh, C. S. Narayanamurthy, Dinesh N. Naik, J. Opt. Soc. Am. A 37 (2020)1826.
Surya Kumar Gautam, Rakesh Kumar Singh, C. S. Narayanamurthy, and Dinesh N. Naik, J. Opt. 22 (2020) 055601.
Z. Chen, D. Singh, Rakesh Kumar Singh, and J. Pu, J. Phys. Commun. (IOP) 4 (2020) 045009.
L. Chen, Z. Chen, Rakesh Kumar Singh, and J. Pu, Opt. Express 28 (2020) 8145.
L. Chen, Rakesh Kumar Singh, Z. Chen, and J. Pu, Opt. Lett. 45 (2020) 212.

Characterization of a spatial light modulator using polarization-sensitive digital holography

Non-invasive tracking of polarization rotation from speckle patterns

Single-shot and twin-image free unique phase retrieval using an aspect of autocorrelation that considers the object asymmetry

Reconstruction of complex-object using edge point referencing

Imaging of polarimetric-phase object through scattering medium by phase shifting

Complex field measurement in a single pixel hybrid correlation holography

Phase shifting digital holography with Hanbury Brown-Twiss approach

Ghost diffraction holographic microscopy

2019

R.V. Vinu, Z. Chen, J. Pu, Y. Otani, and Rakesh Kumar Singh, Opt. Lett. 44 (2019) 5711.
L. Wan, X. Ji, Rakesh Kumar Singh, Z. Chen, and J. Pu, IEEE J. Quant. Electron. 55 (2019) 6100306
Vinu R. V., Kyoohyun Kim, Atul S. Somkuwar, YongKeun Park, and Rakesh Kumar Singh, Opt. Commun. 439 (2019) 218-223.

Speckle-field digital polarization holographic microscopy

Use of scattering layer as a programmable spectrum filter

Imaging through scattering medium using digital holography

2018

Salabh Mishra, Surya Kumar Gautam, Dinesh N. Naik, Ziyang Chen, Jixiong Pu, and Rakesh Kumar Singh, J. Opt. 20 (2018) 125605.
A. P. Vetal, Darshika Singh, Rakesh Kumar Singh, and Deepak Mishra, Opt. and Laser in Eng. 111 (2018) 227.
Darshika Singh, Ziyang Chen, Jixiong Pu, and Rakesh Kumar Singh, J. Opt 20 (2018) 085605
Darshika Singh, and Rakesh Kumar Singh, Opt. Express 26 (2018) 10801-10812.
Gokul G. Nair, R. V. Vinu, Dinesh N. Naik, Michael Linde Jakobsen, Steen G. Hanson, and Rakesh Kumar Singh, Proc. SPIE 10750 (2018) 107500A
R. V. Vinu, Darshika Singh, Jixiong Pu, and Rakesh Kumar Singh, Proc. SPIE 10711 (2018) 107110Q
Annie Varghese, Bhargab Das, and Rakesh Kumar Singh, Opt. Commun. 422 (2018) 3-7.

Recovery of polarimetric parameters from non-imaged laser-speckles

Investigation of transverse motion of concealed scatterer using correlation of speckled speckles from static surface layer

Effect of speckle pattern illumination on holographic recording and reconstruction

Tailoring and analysis of vectorial coherence

Reconstruction of apertured Fourier transform hologram using compressed sensing

Highly stable lens-less digital holography using cyclic lateral shearing interferometer and residual decollimated beam

Lensless Stokes holography with the Hanbury Brown-Twiss approach

2018

Sreelal M., Vinu R. V, and Rakesh Kumar Singh, Opt. Lett. 42 (2017) 5194.
Rakesh Kumar Singh, Sunil Vyas, and Yoko Miyamoto, J. Opt. 19 ( 2017) 115705
Abhijit Roy, Rakesh Kumar Singh, and Maruthi M. Brundavanam, Opt. Lett. 42 (2017) 4343.
Rachit Saluja, G. R. K. S. Subrahmanyam, Deepak Mishra, R. V. Vinu, and Rakesh Kumar Singh, Appl. Opt. 58 (2017) 6949.
A. S. Somkuwar, B. Das, R. V. Vinu, YongKeun Park, and Rakesh Kumar Singh, J. Opt. Soc. Am. A 34 (2017) 1932.
Rakesh Kumar Singh, Opt. Lett. 42 (2017) 2515.
B. Das, N. S. Bisht, R. V. Vinu, and Rakesh Kumar Singh, Appl. Opt. 56 (2017) 4591.
V. Aparna, Niraj K. Soni, R. V. Vinu, and Rakesh Kumar Singh, SPIE Proc. 10074 (2017) 100741P
R. V. Vinu, Charu Gaur, Kedar Khare, and Rakesh Kumar Singh, SPIE Proc. 10074 (2017) 1007409

Lensless Fourier transform holography for coherence waves

Hybrid correlation holography with a single pixel detector

Compressive correlation holography

Holographic imaging through a scattering layer using speckle interferometry

Lensless complex amplitude image retrieval through a visually opaque scattering medium

Jones matrix microscopy from a single-shot intensity measurement

Anisotropy imaging using polarization and angular multiplexing

Sparsity assisted approach for imaging from laser speckle

Controlled modulation of depolarization in laser speckle

2017

2016

Abhijeet Roy, Rakesh Kumar Singh, and Maruthi M. Brundavanam, Appl. Phys. Lett. 109 (2016) 201108.
Vinu R. V., and Rakesh Kumar Singh, Appl. Phys. Let. 109 (2016) 111108.
Niraj Kumar Soni, Vinu R. V. and Rakesh Kumar Singh, Opt. Letter 41 (2016) 906.
Rahul G. Waghmare, P. Ram Sukumar, G. R. K. S. Subrahmanyam, Rakesh Kumar Singh, and Deepak Mishra, J. Opt. Soc. Am. A 33 (2016) 326

Determining helicity and topological structure of coherent vortex beam from laser speckle

Polarization modulation for imaging behind the scattering medium

Particle-filter-based phase estimation in digital holographic interferometry

Analysis of polarization speckle for imaging through random birefringent scatterer

2015

Vinu R. V., and Rakesh Kumar Singh, Applied Optics 54, 6491-6497 (2015)
Rakesh Kumar Singh, Anadraj M. Sharma, and P. Senthilkumaran, Opt. Lett. 40 (2015) 2751
Niraj K. Soni, Atul S. Somkuwar, and Rakesh Kumar Singh, Proc. SPIE 9652 (2015) 965420.
Vinu R. V., and Rakesh Kumar Singh, Opt. Lett. 40 (2015) 1227
Monika Bahal, Brijesh Kumar Singh, Rakesh Kumar Singh,and P. Senthilkumaran, J. Opt. Soc. Am. A 32 (2015) 514
Lijo Thomas, J. Soloman Ivan, P. A. Ameen Yasir, Richa Sharma, Rakesh Kumar Singh, C. S. Narayanamurthy, and K. S. Dasgupta, Appl. Opt. 54 (2015) 699

Vortex array embedded in partially coherent beam

Jones matrix imaging for transparent and anisotropic sample

Internal energy flows of coma affected singular beams in low Numerical Aperture systems

Synthesis of statistical properties of randomly fluctuating polarized fields

Experimental determination of Generalized Stokes parameters

Phase-Shearing using a Mach-Zehnder interferometer

2014

Mitsuo Takeda, Wei Wang, Dinesh N. Naik, and Rakesh Kumar Singh, Opt. Review 21 (2014) 849
Rakesh Kumar Singh, Vinu R.V., and Anandraj Sharma M, Opt. Eng. 53(2014) 104102
Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Yoko Miyamoto, and Mitsuo Takeda, J. Opt. (IOP) 16 (2014) 105010.
Rakesh Kumar Singh, Anandraj Sharma M., and Bhargab Das, Opt. Lett. 39 (2014) 5054.
Vinu R. V., Manoj Kumar Sharma, Rakesh Kumar Singh, and P. Senthilkumaran, Opt. Lett. 39 (2014) 2407.
Rakesh Kumar Singh, Vinu R. V., and Anandraj Sharma M., Applied Phys. Lett. 104 (2014) 111108.
Manoj Kumar Sharma, Rakesh Kumar Singh, Joby Joseph, and P. Senthilkumaran, Opt. Laser Eng. 57 (2014) 48.

Generation of spatial coherence comb by Dammann grating

Quantitative phase-contrast imaging through a scattering media

Characterization of spatial polarization fluctuations in scattered field

Retrieving complex coherence from two-point intensity correlation using holographic principle

Recovery of complex valued objects from two-point intensity correlation measurement

Optical transfer function of an optical system with spiral zone masks in presence of primary aberrations

Spatial statistics optics and spatial correlation holography: A review

2013

Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Maruthi M. Brundavanam, Yoko Miyamoto, and Mitsuo Takeda, Opt. Lett. 38 (2013) 4809
Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Maruthi M. Brundavanam, Yoko Miyamoto, and Mitsuo Takeda, SPIE Prof. 8788 (2013) 87880O.

Relation between vectorial source structure and coherence-polarization of light

Vectorial van Cittert-Zernike theorem based on experimental averaging: experimental demonstrations

2013

2012

Dinesh N. Naik, Takahiro Ezawa, Rakesh Kumar Singh, Yoko Miyamoto, and Mitsuo Takeda, Opt. Express 20 (2012) 19658
Dinesh N. Naik, Rakesh Kumar Singh, Hitoshi Itou, Maruthi M. Brundavanam, Yoko Miyamoto, and Mitsuo Takeda, Opt. Lett. 37 (2012) 3282
Maruthi M. Brundavanam, Yoko Miyamoto, Rakesh Kumar Singh, Dinesh N. Naik, Mitsuo Takeda, and Ken’ichi Nakagawa, Opt. Express 20 (2012) 13573
Dalip Singh Mehta, Dinesh N. Naik, Rakesh Kumar Singh, and Mitsuo Takeda, Appl. Opt. 51 (2012) 1894
Maruthi M. Brundavanam, Yoko Miyamoto, Rakesh Kumar Singh, Dinesh N. Naik, Mitsuo Takeda, and Ken’ichi Nakagawa, Proc. Of SPIE 8480 (2012) 848008
Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Yoko Miyamoto, and Mitsuo Takeda, Opt. Lett. 37 (2012) 966

Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial and angular diversity

Coherence holography by achromatic 3-D field correlation of generic thermal light with an imaging Sagnac shearing interferometer

Stokes Holography

Observation of spatial polarization structure near unfolding point of an optical vortex beam using a birefringent Mach-Zehnder interferometer

Single-shot full filed interferometric polarimeter with an integrated calibration scheme

Interferometer setup for the observation of polarization structure near the unfolding point of an optical vortex beam in a birefringent crystal

2012

2011

Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Yoko Miyamoto, and Mitsuo Takeda, Opt. Express 19 (2011) 11558
Dinesh N. Naik, Rakesh Kumar Singh, Takahiro Ezawa, Yoko Miyamoto, and Mitsuo Takeda, Opt. Express 19 (2011) 1408
Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Yoko Miyamoto, Mitsuo Takeda, Proc. SPIE 8082 (2011),808208/1-10.
Dinesh N. Naik, Rakesh Kumar Singh, Hitoshi Itou Yoko Miyamoto, and Mitsuo Takeda, SPIE 8082 (2011) 80821T/ 1-7.
Dinesh N. Naik, Rakesh Kumar Singh, Takahiro Ezawa, Yoko Miyamoto, and Mitsuo Takeda, Proc. SPIE 8173 (2011) 817319.

Vectorial coherence holography

Highly stable interferometric technique for polarization mapping

Photon correlation holography

Stokes holography for recording and reconstructing objects using polarization fringes

State of polarization mapping using a calibrated interferometric polarimeter

2011

2010

Sunil Vyas, Rakesh Kumar Singh, and P. Senthilkumaran, Opt. Laser Technol. 42 (2010) 878
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Opt. Laser Technol. 42 (2010) 120
Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Yoko Miyamoto, Mitsuo Takeda, Proc. of SPIE, 7782 (2010) 778209
Dinesh N. Naik, Takahiro Ezawa, Rakesh Kumar Singh, Yoko Miyamoto, Mitsuo Takeda, Proc. of SPIE, 7790 (2010) 77900Q-1

Vortices in generalized Stokes parameters

Fractional vortex lens

3-D coherence holography using a commercial projector for display and incoherent illumination of a coherence hologram

Optical transfer function of an optical system with a vortex phase mask in the presence of primary aberrations

2010

2009

Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, J. Opt. Soc. Am. A 26 (2009) 576
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Opt. Commun. 282 (2009) 1501
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Opt. Laser Eng. 47 (2009) 831

Tight focusing of vortex beams in presence of astigmatism

Structure of a tightly focused vortex beam in the presence of primary coma

Tight focusing of linearly-, and circularly polarized vortex beams; Effect of third order spherical aberration

2008

Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, J. Opt. Soc. Am. A 25 (2008) 1307
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, J. Opt. A: Pure Appl. Opt. 10 (2008) 075008
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Opt. Commun. 281 (2008) 5939
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Optik 119(2008) 459
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Opt. Commun. 281 (2008) 923

Focusing of a singular beam in the presence of spherical aberration and defocusing

Focusing of linearly-, and circularly polarized Gaussian background vortex beams by a high numerical aperture system afflicted with third-order astigmatism

Effect of primary spherical aberration on high-numerical –aperture focusing of a Laguerre-Gaussian beam

Effect of primary coma on the tight focusing of a Laguerre-Gaussian beam by a high numerical aperture system; vectorial diffraction theory

Focusing of a vortex carrying beam with Gaussian background by an aperture system in presence of coma

2008

2007

Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Opt. Commun. 270 (2007) 128
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Opt. Laser Eng. 45 (2007) 488
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, Opt. Laser Eng. 45 (2007) 773
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, J. Opt. A: Pure Appl. Opt. 9 (2007) 543

Influence of astigmatism and defocusing on the focusing of a singular beam

Effect of coma on the focusing of an aperture singular beam

Focusing of a vortex carrying beam with Gaussian background by a lens in the presence of spherical aberration and defocusing

Effect of astigmatism on the diffraction of a vortex carrying beam with Gaussian background

Review Papers

Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, “Laser beams with phase singularities; A review” Invertis Journal Sci. Technol. 1 (2007) 85
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, “ ” Invertis Jour. Sci. Technol. 1 (2008) 197
Rakesh Kumar Singh, P. Senthilkumaran, and Kehar Singh, “Tight focusing of optical beams; A review part II” Invertis Jour. Sci. Technol. 2 (2009) 1
T. Sarkar, M. Dixit, R. K. Singh, " " ICOL-2019: Proceedings of the International Conference on Optics and Electro-Optics, Dehradun, India (2021).
Joseph Rosen, Hilton B. de Aguiar, Vijayakumar Anand, YoonSeok Baek, Sylvain Gigan, Ryoichi Horisaki, Hervé Hugonnet, Saulius Juodkazis, KyeoReh Lee, Haowen Liang, Yikun Liu, Stephan Ludwig, Wolfgang Osten, YongKeun Park, Giancarlo Pedrini, Tushar Sarkar, Johannes Schindler, Alok Kumar Singh, Rakesh Kumar Singh, Guohai Situ, Mitsuo Takeda, Xiangsheng Xie, Wanqin Yang, Jianying Zhou; Applied Physics B, 2022, 128, 49.