Education

Ph.D. (Optics), The University of Electro-Communications, Tokyo, Japan [2008-2011].

M.Sc. (Physics with specialization in Optics), University of Hyderabad, Hyderabad, India [2005-2007].

B.Sc.(Physics with Electronics as subsidiary), The Cochin college / Mahatma Gandhi University, Kottayam, India [2003-2005].

Experience

INSPIRE faculty at School of Physics, University of Hyderabad, India [Mar2015-Mar 2017].

Assistant Professor (on ad hoc basis) at Department of Physics, Mehsana Urban Institute of Sciences, Ganpat University, Gujarat, India [Aug2014-Mar2015].

Alexander von Humboldt fellow at Institut für Technische Optik, University of Stuttgart, Germany [Jun2012-May2014].

Researcher at Department of Engineering Science, The University of Electro-Communications, Tokyo, Japan [Apr2011-Dec2011].

Area of Interest

Coherent & Incoherent Optics, Guided Wave Optics, Singular Optics, Adaptive Optics, Signal & Image Processing...

Optical Interferometry, Wavefront sensing/reconstruction, Spectroscopy, Polarimetry, Holography, Tomography, Correloscopy...

Membership of Professional Societies / Other Academic Activities

Member of SPIE (Society of Photo-Optical Instrumentation Engineers) - The International Society for Optics and Photonics

Member of Optical Society of India

Reviewer of various optics journals

The light is characterized by freedoms of multiple parameters, e.g. amplitude, phase, frequency/wavelength, coherence, polarization etc. Full exploitation of these parameters is essential for the development of innovative optical metrology. Optical metrology constitutes one of the most important fields of applied optics as it offers unique capability of non-contact, non-destructive and highly-sensitive measurements for testing and inspection of the sample.

At Applied and Adaptive Optics Laboratory in IIST, we explore innovative techniques for optical sensing with applications in optical metrology devoted to astronomy and remote sensing.

Amplified sensing of optical phase difference through the phase of the resultant field

1. S.R. Lekshmi, Dinesh N Naik, and C. S. Narayanamurthy, “Fried’s coherence length measurement of dynamic Kolmogorov type turbulence using the autocorrelation function”, Journal of Optics 24 (4), 044010, (2022).

2. Nandan, MV Ratnam, VR Kiran, and Dinesh N Naik, “Retrieval of cloud liquid water path using radiosonde   measurements: Comparison with MODIS and ERA5, R”, Journal of Atmospheric and Solar-Terrestrial Physics 227, 105799. (2022).
3. TS Athira, Dinesh N Naik, “Amplified sensing of optical phase difference through the phase of the resultant field”, Journal of Optics 23 (11), 115606. (2021).
4. Pramod Panchal, Dinesh N Naik, and C. S. Narayanamurthy, “In sensitivity of higher order topologically charged Laguerre–Gaussian beams to dynamic turbulence impact”, Optics Communications 495, 127023.(2021).
5. MV Ratnam, VR Kiran, BL Madhavan, Dinesh N Naik, “Estimation of Aerosol Complex Refractive Index over a tropical atmosphere using a synergy of in-situ measurements”, R Nandan, Atmospheric Research 257, 105625. (2021).
6. Surya Kumar Gautam, Rakesh Kumar Singh, C. S. Narayanamurthy, and Dinesh N. Naik “Reconstruction of complex-object using edge point referencing,” Journal of Optics, 22, 055601 (2020).
7. Surya Kumar Gautam, Rakesh Kumar Singh, C. S. Narayanamurthy, and Dinesh N. Naik “Single-shot and twin-image free unique phase retrieval using an aspect of autocorrelation that considers the object asymmetry” JOSA A , 37, 1826-1831 (2020).
8. Vipin Tiwari, Surya Kumar Gautam, Dinesh N. Naik, Rakesh Kumar Singh, and Nandan S. Bisht, “Characterization of a spatial light modulator using polarization-sensitive digital holography,” Appl. Opt. 59, 2024-2030 (2020).
9. Pramod Panchal, Dinesh N Naik, and C. S. Narayanamurthy, “Wavefront sensing for low-coherent sources through spatial coherence revival,” Engineering Research Express, 1, 025011 (2019).
10. Pramod Panchal, Dinesh N Naik, and C. S. Narayanamurthy, “Vectorial shearing cascaded Sagnac interferometric wavefront sensor,” OSA Continuum 2, 2658-2666 (2019).
11. Shalabh Mishra, Surya Kumar Gautam, Dinesh N Naik, Ziyang Chen, Jixiong Pu and Rakesh Kumar Singh “Tailoring and analysis of vectorial coherence,” Journal of Optics, 20, 125605 (2018).
12. Sujai Matta, Pramitha Vayalamkuzhi, Dinesh N Naik and Nirmal K Viswanathan “Evolution of phase singularities from fork-shaped phase grating in the near-field,” Journal of Optics, 20, 075604 (2018).
13. C. T. Samlan, Rashmi Ranjan Suna, Dinesh N. Naik, and Nirmal K. Viswanathan, “Spin-orbit beams for optical chirality measurement,”,Appl. Phys. Lett. 112, 031101 (2018).
14. T Pradeep Chakravarthy, Dinesh N Naik and Nirmal K Viswanathan, “Geometric phase due to orbit–orbit interaction: rotating LP11 modes in a two-mode fiber,” Journal of Optics, 19, 1C (2017).
15. Dinesh N. Naik, Nabil A. Saad, D. Narayana Rao and Nirmal K. Viswanathan, “Ultrashort vortex from a Gaussian pulse - An achromatic-interferometric approach,” Scientific Reports, 7, 2395 (2017).
16. Dinesh N. Naik, and Nirmal K. Viswanathan, “Generation of singular optical beams from fundamental Gaussian beam using Sagnac interferometer,” J. Opt. 18, 095601 (2016).
17. Dinesh N. Naik, T. Pradeep Chakravarthy, and Nirmal K. Viswanathan, “Generation of optical vortex dipole from superposition of two transversely scaled Gaussian beams,” Appl. Opt. 55, B91-B97 (2016).
18. Dinesh N. Naik, T. Pradeep Chakravarthy, Nirmal K. Viswanathan, “Effect of residual phase gradients in optical null interference,” Opt. Lett. 41, 92-95 (2016).
19. C T Samlan, Dinesh N. Naik, and Nirmal K. Viswanathan, “Isogyres - Manifestation of Spin-orbit interaction in uniaxial crystal: A closed-fringe Fourier analysis of conoscopic interference,” Scientific Reports 6, 33141 (2016).
20. C T Samlan, Dinesh N. Naik, and Nirmal K. Viswanathan, “A study of geometric phase topology using Fourier transform method,” J. Opt. 18, 075602 (2016).
21. Alok Kumar Singh, Dinesh N. Naik, Giancarlo Pedrini, Mitsuo Takeda, and Wolfgang Osten, “Exploiting scattering media for exploring 3-D objects,” Light: Science & Applications,6, e16219 (2017).
22. Mitsuo Takeda, Alok Kumar Singh, Dinesh N. Naik, Giancarlo Pedrini, and Wolfgang Osten, “Holographic correloscopy - unconventional holographic techniques for imaging a three-dimensional object through an opaque diffuser or via a scattering wall: A review,” IEEE Transactions on Industrial Informatics, PP, 1 (2015).
23. Dinesh N. Naik, Giancarlo Pedrini, Mitsuo Takeda, and Wolfgang Osten, “Spectrally resolved incoherent holography: 3D spatial and spectral imaging using a Mach–Zehnder radial-shearing interferometer,” Opt. Lett. 39, 1857-1860 (2014).
24. Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Yoko Miyamoto, and Mitsuo Takeda, “Characterization of spatial polarization fluctuations in scattered field,” J. Opt. 16, 105010 (2014).
25. Mitsuo Takeda, Wei Wang, Dinesh N. Naik, and Rakesh Kumar Singh “Spatial Statistical Optics and Spatial Correlation Holography: A Review,” Optical Review 21, 849–861(2014).
26. Wolfgang Osten, Ahmad Faridian, Peng Gao, Klaus Körner, Dinesh N. Naik, Giancarlo Pedrini, Alok Kumar Singh, Mitsuo Takeda, and Marc Wilke, “Recent advances in digital holography [Invited],” Appl. Opt. 53, G44-G63 (2014)
27. Alok Kumar Singh, Dinesh N. Naik, Giancarlo Pedrini, Mitsuo Takeda, and Wolfgang Osten, “Looking through a diffuser and around an opaque surface: A holographic approach,” Opt. Express 22, 7694-7701 (2014).
28. Dinesh N. Naik, Giancarlo Pedrini, and Wolfgang Osten, “Recording of incoherent-object hologram as complex spatial coherence function using Sagnac radial shearing interferometer and a Pockels cell,” Opt. Express 21, 3990-3995 (2013).
29. Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Maruthi M. Brundabanam, Yoko Miyamoto, and Mitsuo Takeda, “Vectorial van Cittert–Zernike theorem based on spatial averaging: experimental demonstrations,” Opt. Lett. 38, 4809-4812 (2013).
30. Dalip Singh Mehta, Dinesh N. Naik, Rakesh Kumar Singh, and Mitsuo Takeda, “Laser speckle reduction by multimode optical fiber bundle with combined temporal, spatial, and angular diversity,” Appl. Opt. 51, 1894-1904 (2012).
31. Dinesh N. Naik, Takahiro Ezawa, Rakesh Kumar Singh, Yoko Miyamoto, and Mitsuo Takeda, “Coherence holography by achromatic 3-D field correlation of generic thermal light with an imaging Sagnac shearing interferometer,” Opt. Express 20, 19658-19669 (2012).
32. Dinesh N. Naik, Rakesh Kumar Singh, Hitoshi Itou, Maruthi M. Brundavanam, Yoko Miyamoto, and Mitsuo Takeda, “Single-shot full-field interferometric polarimeter with an integrated calibration scheme,” Opt. Lett. 37, 3282-3284 (2012).
33. Rakesh Kumar Singh, Dinesh N. Naik, Hitoshi Itou, Yoko Miyamoto, and Mitsuo Takeda, “Stokes holography,” Opt. Lett. 37, 966-968 (2012).
34. Maruthi M. Brundavanam, Yoko Miyamoto, Rakesh Kumar Singh, Dinesh N. Naik, Mitsuo Takeda, and Ken’ichi Nakagawa, “Interferometer setup for the observation of polarization structure near the unfolding point of an optical vortex beam in a birefringent crystal,” Opt. Express 20, 13573-13581 (2012).
35. Dinesh N. Naik, Rakesh Kumar Singh, Takahiro Ezawa, Yoko Miyamoto, and Mitsuo Takeda, “Photon correlation holography,” Opt. Express 19, 1408-1421 (2011).
36. Dinesh N. Naik, Takahiro Ezawa, Yoko Miyamoto, and Mitsuo Takeda, “Real-time coherence holography,” Opt. Express 18, 13782-13787 (2010).
37. Dinesh N. Naik, Takahiro Ezawa, Yoko Miyamoto, and Mitsuo Takeda, “Phase-shift coherence holography,” Opt. Lett. 35, 1728-1730 (2010).
38. Dinesh N. Naik, Takahiro Ezawa, Yoko Miyamoto, and Mitsuo Takeda, “3-D coherence holography using a modified Sagnac radial shearing interferometer with geometric phase shift,” Opt. Express 17, 10633-10641 (2009).

Won the Springer (India) Pvt. Ltd. award for the Best oral presentation in “Nonlinear Optics” category at the International Conference on Fiber Optics and Photonics- PHOTONICS 2016, at IIT Kanpur on 4^th – 8^th December 2016.

Presented Invited talk in Biomedical Imaging and Sensing Conference 2016 (BISC'16) held at Pacifico Yokohama, Yokohama, Japan during May 18-20, 2016.

Won the Best Poster Award in the “IEEE Workshop on Recent Advances in Photonics (WRAP) 2015”, organized by IEEE Photonics Society on 16th and 17th December at Indian Institute of Science, Bangalore. Karnataka, India

Received the INSPIRE Faculty Award of Department of Science and Technology, Government of India, to carry out independent research in 2015.

Presented Invited talk in ICOL-2014, XXXVIII Optical Society of India Symposium: International Conference on Optics & Optoelectronics held at IRDE, Dehradun, Uttarakhand, India during March 05-08, 2014.

Presented Invited talk in Digital Holography and Three-Dimensional Imaging, OSA (Optical Society of America) conference held in Hawaii, USA during April 21-25, 2013.

My research work on coherence holography and intensity-correlation holography was recognized as the exceptionally best scientific research in Japan in the field of Optics by the Japan Society of the Applied Physics (JSAP) in 2012. My scientific paper titled “Coherence holography by achromatic 3-D field correlation of generic thermal light with an imaging Sagnac shearing interferometer” published in Optics Express with Takahiro Ezawa, Rakesh Kumar Singh, Yoko Miyamoto, and Mitsuo Takeda as co-authors received the 54^th Optics Award (2012) of the Japan Society of the Applied Physics (JSAP).

Awarded the Postdoctoral Research Fellowship of Alexander von Humboldt foundation, Germany in 2012 for doing research at Institut für Technische Optik (ITO), Universität Stuttgart, Germany.

Received the University President Award of the University of Electro-Communications, Tokyo, Japan for the best thesis and excellent research in Ph. D in 2011.

Received the First Prize of Poster Presentation Award of XXXV Optical Society of India Symposium: International Conference on Contemporary Trends in Optics & Optoelectronics held at IIST, Thiruvananthapuram, India in 2011.

Received the Best Presentation Award of the 6th Optics & Photonics Japan (OPJ) 2010 as recognition of the best oral papers presented by the young scientists at the conference organized by Optical Society of Japan (OSJ).

Awarded the Monbukagakusho (MEXT) scholarship of Japanese government for 2007 to study for doctoral degree under the guidance of Prof. Mitsuo Takeda in the University of Electro-Communications, Tokyo, Japan.

Selected for the Summer Fellowship Program of year 2006 in the Department of Physics, Indian Institute of Technology, Madras, India to carry out a project on ‘Spectrally resolved phase shifting interferometry for characterizing dispersive optical wedges’ under the guidance of Dr. Nirmal K. Viswanathan.

Secured the 3^rd rank in B Sc. Physics Examination (among 1310 candidates) conducted by Mahatma Gandhi University, Kottayam, Kerala in 2005.

Optical Fabrication and Testing [PH613]

Fourier Optics [PH619]

Adaptive Optics [PH622]

Optical System Analysis and Design [PH623]

Solid State Physics [PH635]

Optics and Optoelectronics Laboratory [PH631]

Design and Analysis Laboratory [PH632]