Dr. Vijay Kumar

Assistant Professor

Department of Physics

National Institute of Technology, Warangal - 506004, Telangana, INDIA

: vijay@nitw.ac.in

: 9493330158

Interests: Nano-Optics; Singular Optics; Correlation Optics; Fiber Singular Optics: Spin-Orbit interactions: Structured Light-matter Interactions.

The universe consists of matter and electromagnetic radiation. We are very well equipped to manipulate matter well below the subwavelength level to create metamaterials. In today’s world of Nanophotonics, structuring light is equally as important as structuring matter. We are interested in, how we can structure amplitude, phase, polarization and coherence properties of light to structured light as per our requirements. We are also interested in “Structured light – structured matter interactions" wherein we adopt unified approach of the Singular Optics and Nano-Optics, to structure light at nanoscale and explore its interactions with nanostructures toward the development of all optical nanophotonics devices.

Personal Webpage: https://sites.google.com/view/vijaykumarnitw/

PROFESSIONAL EXPERIENCE:

1. Nov. 2019 onwards: Assistant Professor at National Institute of Technology Warangal (NITW), Warangal, INDIA.   

2. Oct. - Nov. 2019: Planning and Budgeting Committee (PBC) – Postdoctoral Fellow at Tel-Aviv University, Ramat Aviv, ISRAEL.

3. Jan. 2019 - Sept. 2019: Assistant Professor (Adhoc) at Hansraj College, University of Delhi, Delhi, INDIA. 

4. June 2017 - June 2018: SERB - National postdoctoral fellow (NPDF) at Indian Institute of Science Education and Research (IISER) Pune, INDIA. 

5. Oct. 2015 - 20 June 2017: Postdoctoral fellow at Physical Research Laboratory (PRL), Ahmedabad, INDIA.

6. Sept. 2014 - Sept. 2015: Postdoctoral fellow at University of Naples Federico-II, Naples, ITALY.

 

EDUCATION:

1) 2009-2014: Ph.D. in Physics (Experimental optics), University of Hyderabad, India.

2) 2006-2008: Master of Science in Physics, University of Mysore, India.

3) 2003-2006: Bachelor of Science in Physic, Karnatak University, India.

Course Taught Previously

1. Nonlinear Optics for M.Sc. (Tech) Engineering Physics.

Publications

 International Journal papers:

  1. Bekshaev, L. Mikhaylovskaya, S. Patil, Vijay Kumar and R. P. Singh, "Optical-vortex diagnostics via Fraunhofer slit diffraction with controllable wavefront curvature" J. Opt. Soc. Am. A, 37, 780 (2020).
  2. Satchi Kumari, Vijay Kumar, S. G. Reddy and R.P.Singh, "Tunable ultraslow light propagation in ruby" Opt. Comm. 473, 125913 (2020).
  3. Deepak K. Sharma, Vijay Kumar, Adarsh B. Vasista, Diptabrata Paul, Shailendra K. Chaubey and G. V. Pavan Kumar, “Optical orbital angular momentum read-out using a self-assembled plasmonic nanowire” ACS Photonics 6, 148 (2019).
  4. Satchi Kumari, Shompa Kumari, Avesh Kumar, Vijay Kumar and R.P. Singh, "Transition from two-photon absorption to saturable absorption in gold patterned ruby thin film" Optik 182, 186 (2019).
  5. Deepak K. Sharma, Vijay Kumar*, Adarsh B. Vasista, Shailendra K. Chaubey and G. V. Pavan Kumar, “Spin-Hall effect in the scattering of structured light from plasmonic nanowire” Opt. Lett. 43, 2474 (2018).
  6. Vijay Kumar*, Ali Anwar and R. P. Singh, “Structuring Stokes correlation functions using vector-vortex beam” J. Opt. 20, 015604 (2018).
  7. G. Reddy, Vijay Kumar, Yoko Miyamoto and R. P. Singh, “Scattering of Poincaré beams: polarization speckles” Opt. Exp. 25, 19886 (2017).
  8. Vijay Kumar*, Bruno Piccirillo, S. G. Reddy and R. P. Singh, “Topological structures in vector speckle fields” Lett. 42, 466 (2017).
  9. Vijay Kumar* and Nirmal K. Viswanathan, “Topological structures in vector-vortex beam fields” J. Opt. Soc. Am. B 31, A40-A45 (2014). (Top downloads in June 2014)
  10. Enrique J. Galvez , Brett L. Rojec, Vijay Kumar and Nirmal K. Viswanathan, “Generation of asymmetric umbilics in light’s polarization” Phys. Rev. A, 89, 031801(R) (2014).
  11. Vijay Kumar and Nirmal K. Viswanathan, “Topological structures in Poynting vector field: An Experimental realization” Opt. Lett. 38, 3886, (2013).
  12. Vijay Kumar, Geo M. Philip and Nirmal K. Viswanathan, “Formation and Morphological Transformation of Polarization Singularities: Hunting the Monstar” Opt.15, 044027 (2013).
  13. Vijay Kumar* and Nirmal K. Viswanathan, “Pancharatnam-Berry phase in polarization singular beams” Opt.15, 044026 (2013).
  14. Shankar Pidishety, Vijay Kumar and Nirmal K. Viswanathan, “Plasmon-mediated Vectorial Topological Dipole: Formation and Annihilation” Lett. 37, 4233 (2012).
  15. Geo M. Philip, Vijay Kumar, Giovanni Milione, and Nirmal K. Viswanathan, “Manifestation of the Gouy phase in vector-vortex beams” Opt. Lett. 37, 2667 (2012).
  16. Vijay Kumar, V.V.G. Krishna Inavalli and Nirmal K. Viswanathan, “Dynamic Evolution of Transverse Energy Flow in Focused Asymmetric Optical Vector-Vortex Beams” Opt. Comm. 285, 4866 (2012).

International conference papers:

1) Vijay Kumar, Bruno Piccirillo, S. G. Reddy, and R. P. Singh, “Polarization correlation singularities in vector speckle field” Fourth International Conference on Optical Angular Momentum, Anacapri, Italy, 2017. 
2) S. G. Reddy, Vijay. Kumar, Y. Miyamoto, and R. P. Singh, "Scattering of vector vortex beams: Polarization speckles," AS1K.4, Asia Communications and Photonics Conference, Wuhan, China, 2016. 
3) Vijay Kumar and Nirmal K. Viswanathan, “Is Monstar topologically same as lemon?” Proc. of SPIE Vol. 9379, 937909, 2015. 

4) Bruno Piccirillo, Vijay Kumar, Lorenzo Marrucci, E. Santamato, “Pancharatnam-Berry phase optical elements for generation and control of complex light: generalized superelliptical q-plates” Proc. of SPIE Vol. 9379, 937907, 2015. 
5) Vijay Kumar and Nirmal K. Viswanathan, “Topological aspects of polarization structured beams” Proc. of SPIE Vol. 8999, 89990M, 2014.
6) Vijay Kumar and Nirmal K. Viswanathan, “Polarization singularities and fiber modal decomposition” Proc. of SPIE Vol. 8637, 86371A, 2013.
7) Vijay Kumar and Nirmal K. Viswanathan, “Poynting vector of complex optical field” FW4F.5, Frontiers in optics, Orlando, Florida, USA 2013. 
8) Vijay Kumar and Nirmal K. Viswanathan, “Measuring Poynting vector of optical vortices using polarization interference” pg. 38, Second International Conference on Optical Angular Momentum, The Burrell Collection, Glasgow, UK 2013.
9) Shankar Pidishety, Vijay Kumar and Nirmal K. Viswanathan, “Plasmon-mediated Vectorial Topological Dipole” FTu3A.31, Frontiers in optics, Rochester, USA 2012.
10) Vijay Kumar, Giovanni Milione and Nirmal K. Viswanath, “Geometric phase in anisotropic polarization singular fields” pg. 27, 5th International Conference on “Singular Optics”, Ukraine, 2012.

National conference papers:
1) Vijay Kumar, S. G. Reddy, and R. P. Singh, “Realization of coherence vortex using Poincaré beams” Th3A.7, International Conference on Fiber Optics and Photonics, Kanpur, India, 2016. 
2) Ali Anwar, Nijil Lal, Chithrabhanu P, Vijay Kumar, R. P. Singh, “Tunable quantum entangled states” W2C. 2, International Conference on Fiber Optics and Photonics, Kanpur, India, 2016.
3) C. T. Samlan, Vijay Kumar and Nirmal K. Viswanathan, “Electro-optically tunable topological transformation” T4C, International Conference on Fiber Optics and Photonics, Kharagpur, India, 2014. 
4) Vijay Kumar and Nirmal K. Viswanathan, “Topological optics” Workshop on recent advances in photonics (WRAP), IIT Delhi, India 2013. 
5) Vijay Kumar and Nirmal K. Viswanathan, “Evolution of polarization singularities in few-mode fiber” WPo.22, International Conference on Fiber Optics and Photonics, Chennai, India 2012. 
6) Vijay Kumar and Nirmal K. Viswanathan, “Dynamical properties optical vortex beam with tunable anisotropy” International Conference on Contemporary Trends in Optics and Opto Electronics, Thiruvananthapuram, India, 2011. 

Magazine articles
1) Enrique J. Galvez , Brett L. Rojec, Vijay Kumar and Nirmal K. Viswanathan, “Asymmetric polarization singularities in optical beams” Optics & Photonics News, pg. 47, Dec 2014. [Link]
2) Nirmal K. Viswanathan and Vijay Kumar, “Angular momentum of light” Kiran: A Bulletin of Indian laser association, Vol.24, Iss.03, 20-25(2013). [Link]

 

PHDs Supervised

 

Workshops/Conferences

 

Projects

 

Awards and Honors

 FELLOWSHIP AWARDS:
1) January 2010: Council of Scientific and Industrial Research (India) – Junior Research Fellowship (CSIR-JRF) award for pursuing PhD.
2) June 2017: Department of science and technology (DST)-Science and Engineering Research Board (SERB), India – National Post-Doctoral Fellowship (NPDF).
3) Oct. 2019: Council for Higher Education in Israel, Planning and Budgeting Committee (PBC) outstanding Post-Doctoral Researchers from India & China.

Additional Responsibility