Assistant Professor

Dr Ravi Kumar

Department of Physics

Interests

  1. Optical Information Processing
  2. Digital Holography
  3. Computational/Optical Imaging

Faculty Details

Education

2012

Sri Venkateswara College
University of Delhi
India
BSc (H)

2013

Maharshi Dayanand University, Rohtak
India
BEd

2015

Indian Institute of Technology (ISM)
Dhanbad
India
MSc

2018

Indian Institute of Technology (ISM)
Dhanbad
India
PhD

Experience

  • November 2020 to August 2022, Postdoctoral Research Fellow, Ben-Gurion University of the Negev, Israel
  • November 2019 to November 2020, Postdoctoral Research Fellow, Nanjing University of Science and Technology, China
  • July 2018 - July 2019, Postdoctoral Research Fellow, National University of Singapore, Singapore

Research Interest

  • Optical Information Processing
  • Digital Holography
  • Computational/Optical Imaging
  • Quantitative Phase Imaging

Awards & Fellowships

  • 2020 – PBC Fellowship – Planning & Budgeting Committee (PBC) of the Council for Higher Education (CHE), Israel, 2020
  • 2020 – India Top Cited Paper Award - IOP Publishing
  • 2016 – Best poster Award in national conference NCLC-2016, held at IIT(ISM) Dhanbad
  • 2016 – Best poster award in international conference q-PaCE-2016, held at IIT(ISM) Dhanbad
  • 2014 – Qualified CSIR-UGC NET exam (All India Rank 84) in Physical Sciences.

Memberships

  • OSA Member, March 2021 - till now

Publications

Journal Articles
      • Mandapati, Vinny Cris, Harsh Vardhan, Shashi Prabhakar, Sakshi, Ravi Kumar, Salla Gangi Reddy, Ravindra P. Singh, and Kehar Singh. 2023. "Multi-User Nonlinear Optical Cryptosystem Based on Polar Decomposition and Fractional Vortex Speckle Patterns" Photonics 10, no. 5: 561. https://doi.org/10.3390/photonics10050561
      • Collision in a phase-only asymmetric cryptosystem based on interference and phase-truncated Fourier transforms
      • R. Kumar†,*, V. Anand†, and J. Rosen, 3D single shot lensless incoherent optical imaging using coded phase aperture system with point response of scattered airy beams, Scientific Reports (Nature Portfolio) 13, 2996 (2023). IF: 4.996
      • Ravi Kumar*, Sakshi, and Kehar Singh, An asymmetric optical cryptosystem based on Radon transform for phase image encryption [invited], Asian Journal of Physics, 31(7), A1-A12 (2022).
      • Y. Xiong, J. Gu, and R. Kumar*, Security analysis on an interference-based optical image encryption scheme, Applied Optics, 61(30), 9045-9051 (2022). IF: 1.905
      • Sachin, Ravi Kumar*, and Phool Singh, Multiuser optical image authentication platform based on sparse constraint and polar decomposition in Fresnel domain, Physica Scripta, 97(11), 115101 (2022). IF: 3.081
      • Jawahar Prabhakar Desai†, Ravi Kumar†,*, and Joseph Rosen, Optical incoherent imaging using annular synthetic aperture with superposition of phase-shifted optical transfer functions, Optics Letters, 47(16), 4012-4015 (2022). IF: 3.560
      • Y. Xiong and Ravi Kumar*, Security analysis on asymmetric optical cryptosystem based on interference and equal modulus decomposition, Optical and Quantum Electronics, 54, 507 (2022). IF: 2.794
      • Y. Xiong and Ravi Kumar*, Security analysis on the interference-based optical image cryptosystem with a designed amplitude modulator, Applied Optics, 61(20) 5998-6005( 2022). IF: 1.905
      • D. Smith†, S. Gopinath†, F. G. Arockiaraj†, A. N. K. Reddy, V. Balasubramani, R. Kumar, N. Dubey, S..H. Ng, T. Katkus, S. J. Selva, D. Renganathan, B. R. K. Manueldoss, A. S. J. F. Rajeswary, S. Navaneethakrishnan, S. R. Inbanathan, S-M. Valdma, P. P Angamuthu, A. Jayavel, M. Kumar, R. A. Ganeev, P. J. Magistretti, C. Depeursinge, S. Juodkazis, J. Rosen, V. Anand, Non-Linear Reconstruction of Images from Patterns Generated by Deterministic or Random Optical Masks – Concepts and Review of Research, Journal of Imaging, 8(6), 174 (2022).
      • Vijaykumar Anand†, S Khonina†, R Kumar, N Dubey, ANK Reddy, J Rosen, and S Juodkazis, Three-dimensional Incoherent Imaging Using Spiral Rotating Point Spread Functions Created by Double-helix Beams [invited], Nanoscale Research Letters, 17, 37 (2022). IF: 5.418
      • Nathaniel Hai†, Ravi Kumar†, and Joseph Rosen, Single-shot TIE using polarization multiplexing (STIEP) for quantitative phase imaging, Optics and Lasers in Engineering, 151, 16912 (2022). IF:5.666
      • Sachin, Ravi Kumar*, and Phool Singh, Modified plaintext attacks in a session for an optical cryptosystem based on DRPE with PFS, Applied Optics, 61(2), 623-628 (2022). IF: 1.905
      • Nitin Dubey, Ravi Kumar, and Joseph Rosen, COACH-based Shack–Hartmann wavefront sensor with an array of phase coded masks, Optics Express, 29(20), 31859-31874 (2021). IF: 3.833
      • Sachin, Ravi Kumar*, and Phool Singh, Unequal modulus decomposition and modified Gerchberg Saxton algorithm based asymmetric cryptosystem in Chirp Z transform domain, Optical and Quantum Electronics, 53(5), 254 2021. IF: 2.794
      • Phool Singh¥, Ravi Kumar¥,*, A. K. Yadav, and Kehar Singh, Security analysis and modified attack algorithms for a nonlinear optical cryptosystem based on DRPE, Optics and Lasers in Engineering, 139, 106501 (2021). IF=5.666
      • Eakta Kumari, Saurabh Mukherjee, Phool Singh, and Ravi Kumar*, Asymmetric Color Image Encryption and Compression based on Discrete Cosine Transform in Fresnel Domain, Results in Optics, 1, 100005 (2020).
      • Pankaj Rakheja, Phool Singh, Rekha Vig, and Ravi Kumar, Double image encryption scheme for iris template protection using 3D Lorenz system and modified equal modulus decomposition in hybrid transform domain, Journal of Modern Optics, 67(7), 592-605 (2020) IF=1.293
      • R. Kumar and C. Quan, Asymmetric multi-user optical cryptosystem based on polar decomposition and Shearlet transform, Optics and Lasers in Engineering, 120, 118-126 (2019). IF=5.666
      • Fuqiang Zhong, Ravi Kumar, and Quan Chenggen, RGB laser speckles based 3D profilometry, Applied Physics Letters, 114(20), 201104 (2019). IF=3.971
      • Ravi Kumar, Fuqiang Zhong, and Quan Chenggen, Optical voice information hiding using enhanced iterative algorithm and computational ghost imaging, Journal of Optics, 21(6), 065704 (2019). IF=2.077
      • Y. Xiong, R. Kumar, and C. Quan, Security analysis on an optical encryption and authentication scheme based on phase-truncation and phase-retrieval algorithm, IEEE Photonics Journal, 11(5), 7801514 (2019). IF=2.25
      • R. Kumar and C. Quan, Optical color image encryption using spiral phase transform and chaotic pixel scrambling, Journal of Modern Optics, 66(7), 776-785 (2019). IF=1.293
      • Fuqiang Zhong, Ravi Kumar, and Quan Chenggen, A cost-effective single-shot structured light system for 3D shape measurement, IEEE Sensors Journal, 19(17), 7335-7346 (2019). IF=4.325
      • Pankaj Rakheja, Rekha Vig, Phool Singh, and Ravi Kumar, An Iris biometric protection scheme using 4D hyperchaotic system and modified equal modulus decomposition in hybrid multi resolution wavelet domain, Optical and Quantum Electronics, 51(6), 204 (2019). IF=2.794
      • Ravi Kumar, Basanta Bhaduri, and John T. Sheridan, Nonlinear double image encryption using 2D non-separable linear canonical transform and phase retrieval algorithm, Optics & Laser Technology, 107, 353-360 (2018). IF=4.939
      • Ravi Kumar, Basanta Bhaduri, and Bryan Hennelly, QR code based nonlinear image encryption using Shearlet transform and spiral phase transform, Journal of Modern Optics, 65(3), 321-330 (2018). IF=1.293
      • Ravi Kumar, Basanta Bhaduri, and Naveen K. Nischal, Nonlinear QR code based optical image encryption using spiral phase transform, equal modulus decomposition and singular value decomposition, Journal of Optics, 20(1), 015701 (2018). IF=2.077
      • Ravi Kumar, Basanta Bhaduri, and Quan Chenggen, Asymmetric optical image encryption using Kolmogorov phase screens and equal modulus decomposition, Optical Engineering, 56(11), 113109 (2017). IF=1.352
      • Ravi Kumar, and Basanta Bhaduri, Optical image encryption in Fresnel domain using spiral phase Transform, Journal of Optics, 19(9), 095701 (2017). IF=2.077
      • Ravi Kumar, and Basanta Bhaduri, Optical image encryption using Kronecker product and hybrid phase masks, Optics & Laser Technology, 95, 51-55 (2017). IF=4.939
Book Chapters
      • R. Kumar*, Y. Xiong, and Sakshi, Optical Cryptosystems Based on Spiral Phase Modulation, In: Chen, H., Liu, Z. (eds) Recent Advanced in Image Security Technologies. Studies in Computational Intelligence, vol 1079 (2023). Springer Cham. DOI: https://doi.org/10.1007/978-3-031-22809-4_3
      • Sachin, Phool Singh, Ravi Kumar, and A. K. Yadav, Asymmetric Cryptosystem for Color Images Based on Unequal Modulus Decomposition in Chirp-Z Domain. In: Gupta, G., Wang, L., Yadav, A., Rana, P., Wang, Z. (eds) Proceedings of Academia-Industry Consortium for Data Science. Advances in Intelligent Systems and Computing, vol 1411 (2021). Springer, Singapore. DOI: https://doi.org/10.1007/978-981-16-6887-6_27
Peer reviewed conference Proceedings
    • A. Bleahu, S. Gopinath, R. Kumar, F.G. Arokiaraj, D. Smith, T. Kahro, P. A. Praveen, S.H. Ng, A. Pristy, T. Katkus, A. Simon, K. Kukli, A. Tamm, S. Juodkazis, J. Rosen, and V. Anand, 4D imaging using accelerating airy beams and nonlinear reconstruction, Proceedings of SPIE, 12445, Practical Holography XXXVII: Displays, Materials, and Applications, 124450Z (8 March 2023); DOI: https://doi.org/10.1117/12.2649853
    • J. P. Desai, R. Kumar, and J. Rosen, Resolution-Enhanced Incoherent Imaging Using Annular Synthetic Aperture with Superposition of Phase - Shifted Optical Transfer Functions, in Frontiers in Optics + Laser Science 2022 (FIO, LS), Technical Digest Series (Optica Publishing Group, 2022), paper FM5E.5. DOI: https://doi.org/10.1364/FIO.2022.FM5E.5
    • Ravi Kumar, Nathaniel Hai, and Joseph Rosen, Quantitative phase imaging based on single-shot TIE using polarization multiplexing, in Digital Holography and 3-D Imaging 2022, D. Chu, J. Park, C. Cheng, and P. Ferraro, eds., Technical Digest Series (Optica Publishing Group, 2022), paper M4A.2. DOI: https://doi.org/10.1364/DH.2022.M4A.2
    • Nitin Dubey, Vijayakumar Anand, Svetlana Khonina, Ravi Kumar, Andra Naresh Kumar Reddy, and Joseph Rosen, Incoherent Digital Holography using Spiral Rotating Point Spread Functions Created by Double-helix Beams, in Digital Holography and 3-D Imaging 2022, D. Chu, J. Park, C. Cheng, and P. Ferraro, eds., Technical Digest Series (Optica Publishing Group, 2022), paper M1A.3. DOI: https://doi.org/10.1364/DH.2022.M1A.3
    • Nitin Dubey, Ravi Kumar, and Joseph Rosen, COACH-based Shack-Hartmann wavefront sensor, OSA Imaging and Applied Optics Congress 2021 (3D, COSI, DH, ISA, pcAOP), OSA Technical Digest (Optical Society of America, 2021), paper DW5C.1; DOI: https://doi.org/10.1364/DH.2021.DW5C.1
    • Ravi Kumar and Quan Chenggen, Multiuser optical information authentication using photon counting in spiral phase transform domain, Proceedings of SPIE 11027, Quantum Optics and Photon Counting (2019), 110270D (30 April 2019); DOI: https://doi.org/10.1117/12.2520844
    • Ravi Kumar and Basanta Bhaduri, Double image encryption in Fresnel domain using wavelet transform, gyrator transform and spiral phase masks, Proceedings of SPIE 10449, Fifth International Conference on Optical and Photonics Engineering, 104490O (13 June 2017); DOI: https://doi.org/10.1117/12.2269897

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