People

Ph.D. Student (Jan. 2021 - present)

Popular/Magazine article:

1. Purnesh Singh Badavath, Venugopal Raskatla, Vijay Kumar*, “Non-line-of-sight Optical Communication using Structured Light” Optics & Photonics News, 34 (12), 50 (Dec 2023). [Link]    

2. Venugopal Raskatla, Purnesh Singh Badavath, Vijay Kumar*, Satyajeet Patil and R. P. Singh, “Speckle-Based Recognition of OAM Modes” Optics & Photonics News, 33 (12), 51 (Dec 2022). [Link]

Journal Publications

1. Chayanika Sharma, Purnesh Singh Badavath and Vijay Kumar*, "Experimental realization of optical communication link with intensity degenerate orbital angular momentum beams" J Opt (2024). https://doi.org/10.1007/s12596-024-01984-x 

2. Chayanika Sharma, Purnesh Badavath, Supraja P, Rakesh Kumar R, and Vijay Kumar*, "Machine Learning-assisted Orbital Angular Momentum Recognition using Nanostructures" J. Opt. Soc. Am. A, 41, 1420-1425 (2024). 

3. Trishita Das, Manas Ranjan Pandit, Venugopal Raskatla, Purnesh Singh Badavath and Vijay Kumar*, “Astigmatic speckle‑learned OAM shift keying and OAM multiplexing” J Opt (2024). https://doi.org/10.1007/s12596-024-01899-7

4. Purnesh Badavath, Venugopal Raskatla, and Vijay Kumar*, “1D Speckle-learned Structured Light Recognition” Opt. Lett. 49, 1045 (2024). [Link]

5. Purnesh Badavath, Venugopal Raskatla, Pradeep Chakravarthy, and Vijay Kumar*, “Speckle-based Structured Light Shift-keying for Non-line-of-sight Optical Communication”, Appl. Opt., 62, G53 (2023). [Link]

6. Venugopal Raskatla, B P Singh, and Vijay Kumar*, “Speckle-learned Convolutional Neural Network for the recognition of intensity degenerate orbital angular momentum modes" Optical Engineering 62, 36104 (2023). [Link]

7. Venugopal Raskatla, B P Singh, and Vijay Kumar*, "Convolutional Networks for speckle-based OAM modes classification" Optical Engineering 61, 036114 (2022). [Link]

8. Venugopal Raskatla, B. P. Singh, Satyajeet Patil, Vijay Kumar*, R. P. Singh, “Speckle-based Deep Learning Approach for OAM Modes Classification” J. Opt. Soc. Am. A, 39, 759 (2022). [Link]

Conference Publications:

1. Venugopal Raskatla, Purnesh Singh Badavath, and Vijay Kumar "Machine learning meets singular optics: speckle-based structured light demultiplexing", Proc. SPIE 12938, Sixteenth International Conference on Correlation Optics, 129381H (5 January 2024); [Link]

2. P. S. Badavath, M. R. Pandit, and V. Kumar, "Classification of OAM Speckle Field from Fresnel to Fraunhofer Region," in Frontiers in Optics + Laser Science 2023 (FiO, LS), Technical Digest Series (Optica Publishing Group, 2023), paper FD2.2. [Link]

3. T. Das, M. R. Pandit, P. S. Badavath, and V. Kumar, "Speckle-learned Demultiplexing of Intensity Degenerate Laguerre Gaussian Beams," in Frontiers in Optics + Laser Science 2023 (FiO, LS), Technical Digest Series (Optica Publishing Group, 2023), paper JM7A.29. [Link]

4. Manas Ranjan Pandit, Trishita Das, Purnesh Singh Badavath and Vijay Kumar*, “Enhancing Classification Accuracy of Intensity Degenerate Orbital Angular Momentum modes through Astigmatism Induced by Tilted Spherical Lens”, 84th Japan Society of Applied Physics 2023, SAP Autumn Meeting 2023, paper 20p-A308-11. [Link]

5. Trishita Das, Manas Ranjan Pandit, Purnesh Singh and Vijay Kumar*, “Hermite-Gaussian Superposition Modes for Speckle-Guided Demultiplexing of Information”, 84th Japan Society of Applied Physics 2023, SAP Autumn Meeting 2023, paper 21a-A601-6. [Link]

6. P. S. Badavath, V. Raskatla, H. J. Pandit, and V. Kumar, "Non-line-of-sight optical communication using 1D Speckle Information," in Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023), Technical Digest Series (Optica Publishing Group, 2023), paper ci_p_6. [Link1] [Link2]

7. Trishita Das, Manas Ranjan Pandit, Purnesh Singh Badavath and Vijay Kumar*, “Speckle-learned Orbital Angular Momentum De-multiplexing”, 6th International Conference on Optics, Photonics and Lasers, Funchal, Portugal, 2023. [Link]

8. P. Singh and V. Kumar, "Hermite-Gaussian Beams Classification based on 1D Speckle Information using 1D Convolutional Neural Network," in Optica Advanced Photonics Congress 2022, Technical Digest Series (Optica Publishing Group, 2022), paper LsTu5C.3. [Link]

9. P. S. Badavath and V. Kumar, "1D CNN Empowered Speckle-based non-line-of-sight Communication using Hermite-Gaussian modes," in Frontiers in Optics + Laser Science 2022 (FIO, LS), Technical Digest Series (Optica Publishing Group, 2022), paper JW5B.56. [Link]

10. Chayanika Sharma, Purnesh Singh Badavath, P Supraja, Rakesh Kumar R, Vijay Kumar*, “AI-Driven OAM Demultiplexing using Nanostructures” International Conference on Optics, Photonics and Quantum Information (OPTIQ) 2023, CUSAT, Kochi, India.

11. Purnesh Singh Badavath, and Vijay Kumar*, “1D Speckle-learned OAM Demultiplexing in Free Space Optical Communication” Photonics 2023, IISc Bangalore, India.

12. Manas Ranjan Pandit,Trishita Das, Purnesh Singh Badavath, and Vijay Kumar* “Astigmatic Transformed Far-Field Speckle-Learned Classification Of Intensity Degenerate Optical Orbital Angular Momentum Modes” Photonics 2023, IISc Bangalore, India.

13. Trishita Das, Manas Ranjan Pandit, Purnesh Singh Badavath, and Vijay Kumar* “Speckle-Learned Information Demultiplexing Using Hermite Gaussian Superposition Modes” Photonics 2023, IISc Bangalore, India.

14. Purnesh Singh Badavath, Venugopal Raskatla and Vijay Kumar*, “CNN-Powered Multicasting Optical Communication using Orbital Angular Momentum Beams”, Conference on Optics, Photonics and Quantum optics, IIT Roorkee, 2022.

15. Venugopal Raskatla, Purnesh Singh Badavath, and Vijay Kumar*, “Deep Learning enabled Speckle-based OAM Shift-Keying through Intensity Degenerate Modes”, Conference on Optics, Photonics and Quantum optics, IIT Roorkee, 2022.

Ph.D. Student (Aug. 2023 - present)

Journal Publications

1. Chayanika Sharma, Purnesh Badavath, Supraja P, Rakesh Kumar R, and Vijay Kumar*, "Machine Learning-assisted Orbital Angular Momentum Recognition using Nanostructures" J. Opt. Soc. Am. A, 41, 1420-1425 (2024). 

2. Chayanika Sharma, Purnesh Singh Badavath and Vijay Kumar*, "Experimental realization of optical communication link with intensity degenerate orbital angular momentum beams" J Opt (2024). https://doi.org/10.1007/s12596-024-01984-x 

Conference Publications

1. Chayanika Sharma, Purnesh Singh Badavath, P Supraja, Rakesh Kumar R, Vijay Kumar*, “AI-Driven OAM Demultiplexing using Nanostructures” International Conference on Optics, Photonics and Quantum Information (OPTIQ) 2023, CUSAT, Kochi, India.

2. C. Sharma and V. Kumar, "Speckled-learned Classification of Partially Coherent Vortex Beams," in Frontiers in Optics + Laser Science 2023 (FiO, LS), Technical Digest Series (Optica Publishing Group, 2023), paper JM7A.135. [Link]

M.Sc. Project Student (2023)

Journal Publications

1. Trishita Das, Manas Ranjan Pandit, Venugopal Raskatla1, Purnesh Singh Badavath and Vijay Kumar*, “Astigmatic speckle‑learned OAM shift keying and OAM multiplexing” J Opt (2024). https://doi.org/10.1007/s12596-024-01899-7

Conference Publications:

1. T. Das, M. R. Pandit, P. S. Badavath, and V. Kumar, "Speckle-learned Demultiplexing of Intensity Degenerate Laguerre Gaussian Beams," in Frontiers in Optics + Laser Science 2023 (FiO, LS), Technical Digest Series (Optica Publishing Group, 2023), paper JM7A.29. [Link]

2. Manas Ranjan Pandit, Trishita Das, Purnesh Singh Badavath and Vijay Kumar*, “Enhancing Classification Accuracy of Intensity Degenerate Orbital Angular Momentum modes through Astigmatism Induced by Tilted Spherical Lens”, 84th Japan Society of Applied Physics 2023, SAP Autumn Meeting 2023, paper 20p-A308-11. [Link]

3. Trishita Das, Manas Ranjan Pandit, Purnesh Singh and Vijay Kumar*, “Hermite-Gaussian Superposition Modes for Speckle-Guided Demultiplexing of Information”, 84th Japan Society of Applied Physics 2023, SAP Autumn Meeting 2023, paper 21a-A601-6. [Link]

4. Trishita Das, Manas Ranjan Pandit, Purnesh Singh Badavath and Vijay Kumar*, “Speckle-learned Orbital Angular Momentum De-multiplexing”, 6th International Conference on Optics, Photonics and Lasers, Funchal, Portugal, 2023. [Link]

5. Manas Ranjan Pandit, Trishita Das, Purnesh Singh Badavath, and Vijay Kumar* “Astigmatic Transformed Far-Field Speckle-Learned Classification Of Intensity Degenerate Optical Orbital Angular Momentum Modes” Photonics 2023, IISc Bangalore, India.

6. Trishita Das, Manas Ranjan Pandit, Purnesh Singh Badavath, and Vijay Kumar* “Speckle-Learned Information Demultiplexing Using Hermite Gaussian Superposition Modes” Photonics 2023, IISc Bangalore, India.

M.Sc. Project Student (2023)

Journal Publications

1. Trishita Das, Manas Ranjan Pandit, Venugopal Raskatla1, Purnesh Singh Badavath and Vijay Kumar*, “Astigmatic speckle‑learned OAM shift keying and OAM multiplexing” J Opt (2024). https://doi.org/10.1007/s12596-024-01899-7

Conference Publications:

1. P. S. Badavath, M. R. Pandit, and V. Kumar, "Classification of OAM Speckle Field from Fresnel to Fraunhofer Region," in Frontiers in Optics + Laser Science 2023 (FiO, LS), Technical Digest Series (Optica Publishing Group, 2023), paper FD2.2. [Link]

2. T. Das, M. R. Pandit, P. S. Badavath, and V. Kumar, "Speckle-learned Demultiplexing of Intensity Degenerate Laguerre Gaussian Beams," in Frontiers in Optics + Laser Science 2023 (FiO, LS), Technical Digest Series (Optica Publishing Group, 2023), paper JM7A.29. [Link]

3. Manas Ranjan Pandit, Trishita Das, Purnesh Singh Badavath and Vijay Kumar*, “Enhancing Classification Accuracy of Intensity Degenerate Orbital Angular Momentum modes through Astigmatism Induced by Tilted Spherical Lens”, 84th Japan Society of Applied Physics 2023, SAP Autumn Meeting 2023, paper 20p-A308-11. [Link]

4. Trishita Das, Manas Ranjan Pandit, Purnesh Singh and Vijay Kumar*, “Hermite-Gaussian Superposition Modes for Speckle-Guided Demultiplexing of Information”, 84th Japan Society of Applied Physics 2023, SAP Autumn Meeting 2023, paper 21a-A601-6. [Link]

5. Trishita Das, Manas Ranjan Pandit, Purnesh Singh Badavath and Vijay Kumar*, “Speckle-learned Orbital Angular Momentum De-multiplexing”, 6th International Conference on Optics, Photonics and Lasers, Funchal, Portugal, 2023. [Link]

6. Manas Ranjan Pandit, Trishita Das, Purnesh Singh Badavath, and Vijay Kumar* “Astigmatic Transformed Far-Field Speckle-Learned Classification Of Intensity Degenerate Optical Orbital Angular Momentum Modes” Photonics 2023, IISc Bangalore, India.

7. Trishita Das, Manas Ranjan Pandit, Purnesh Singh Badavath, and Vijay Kumar* “Speckle-Learned Information Demultiplexing Using Hermite Gaussian Superposition Modes” Photonics 2023, IISc Bangalore, India.

M.Sc. Project Student (2022)

Currently pursuing Ph.D. at Nanophotonics and Metamaterial group, Optoelectronics Research Centre, University of Southampton, UK.

Popular/Magazine article:

1. Purnesh Singh Badavath, Venugopal Raskatla, Vijay Kumar*, “Non-line-of-sight Optical Communication using Structured Light” Optics & Photonics News, 34 (12), 50 (Dec 2023). [Link]    

2. Venugopal Raskatla, Purnesh Singh Badavath, Vijay Kumar*, Satyajeet Patil and R. P. Singh, “Speckle-Based Recognition of OAM Modes” Optics & Photonics News, 33 (12), 51 (Dec 2022). [Link]

Journal Publications:

1. Trishita Das, Manas Ranjan Pandit, Venugopal Raskatla, Purnesh Singh Badavath and Vijay Kumar*, “Astigmatic speckle‑learned OAM shift keying and OAM multiplexing” J Opt (2024). https://doi.org/10.1007/s12596-024-01899-7

2. Purnesh Badavath, Venugopal Raskatla, and Vijay Kumar*, “1D Speckle-learned Structured Light Recognition” Opt. Lett. 49, 1045 (2024). [Link]

3. Purnesh Badavath, Venugopal Raskatla, Pradeep Chakravarthy, and Vijay Kumar*, “Speckle-based Structured Light Shift-keying for Non-line-of-sight Optical Communication”, Appl. Opt., 62, G53 (2023). [Link]

4. Venugopal Raskatla, B P Singh, and Vijay Kumar*, “Speckle-learned Convolutional Neural Network for the recognition of intensity degenerate orbital angular momentum modes" Optical Engineering 62, 36104 (2023). [Link]

5. Venugopal Raskatla, B P Singh, and Vijay Kumar*, "Convolutional Networks for speckle-based OAM modes classification" Optical Engineering 61, 036114 (2022). [Link]

6. Venugopal Raskatla, B. P. Singh, Satyajeet Patil, Vijay Kumar*, R. P. Singh, “Speckle-based Deep Learning Approach for OAM Modes Classification” J. Opt. Soc. Am. A, 39, 759 (2022). [Link]

Conference Publications:

1. Venugopal Raskatla, Purnesh Singh Badavath, and Vijay Kumar "Machine learning meets singular optics: speckle-based structured light demultiplexing", Proc. SPIE 12938, Sixteenth International Conference on Correlation Optics, 129381H (5 January 2024); [Link]

2. P. S. Badavath, V. Raskatla, H. J. Pandit, and V. Kumar, "Non-line-of-sight optical communication using 1D Speckle Information," in Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023), Technical Digest Series (Optica Publishing Group, 2023), paper ci_p_6. [Link1] [Link2]

3. V. Raskatla and V. Kumar, "Deep Learning assisted Recognition of Perfect Optical Vortices through Astigmatic Transformed Speckle Patterns," in Frontiers in Optics + Laser Science 2022 (FIO, LS), Technical Digest Series (Optica Publishing Group, 2022), paper JTu5A.23. [Link]

4. Venugopal Raskatla and Vijay Kumar, "Deep learning assisted OAM modes demultiplexing", Proc. SPIE 12126, 121260A, 2021. [Link]

5. Venugopal Raskatla and Vijay Kumar, "Deep Learning Assisted Classification of Noisy Laguerre Gaussian Modes," JTu1A.16, Frontiers in optics, Washington, DC, USA 2021. [Link]

6. Purnesh Singh Badavath, Venugopal Raskatla and Vijay Kumar*, “CNN-Powered Multicasting Optical Communication using Orbital Angular Momentum Beams”, Conference on Optics, Photonics and Quantum optics, IIT Roorkee, 2022.

7. Venugopal Raskatla, Purnesh Singh Badavath, and Vijay Kumar*, “Deep Learning enabled Speckle-based OAM Shift-Keying through Intensity Degenerate Modes”, Conference on Optics, Photonics and Quantum optics, IIT Roorkee, 2022. 

M.Sc. Project Student (2021)

Currently pursuing Ph.D at Max Planck Institute for the Science of Light, Staudtstrasse 2, 91058, Erlangen, Germany.

Journal Publications:

1. Himangi J. Pandit, Vijay Kumar, and R. P. Singh, “Dynamical charge inversion of polarization correlation vortex in propagating vector speckle field” J. Opt. 24, 064005 (2022). [Link]  

Conference Publications:

2. P. S. Badavath, V. Raskatla, H. J. Pandit, and V. Kumar, "Non-line-of-sight optical communication using 1D Speckle Information," in Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023), Technical Digest Series (Optica Publishing Group, 2023), paper ci_p_6. [Link1] [Link2]

3. Himangi J. Pandit, Vijay Kumar, and R. P. Singh "Charge inversion of polarization correlation vortex", Proc. SPIE 12126, 1212607, 2021. [Link]

4. Himangi. J. Pandit, Vijay Kumar, and R. P. Singh, "Dynamical Charge Inversion of Polarization Correlation Vortex Propagating through a Cylindrical Lens," JW7A.41, Frontiers in optics, Washington, DC, USA 2021. [Link]