Journal Papers

1. S. Mehta and B. Pathak, "Fourier ptychography microscopy with programmable beam illumination," Opt. Express  33, 12071-12089 (2025).

2. Jomy, A., Mehta, S., Jacob, J., Anirudh, S., Krishna, D. K., Kumar, R., ... & Pathak, B. (2025). Experimental arrangement to study the impact of atmospheric turbulence on user-defined beams. Review of Scientific Instruments, 96(1). https://doi.org/10.1063/5.0233969. 

3. Tillo, D., & Ivan, J. S. (2025). Estimating object and field phase through in-line intensity measurements using a twinning algorithm. Optics Communications, 131544.https://doi.org/10.1016/j.optcom.2025.131544

4.  Harikrishnan, P., & Naik, D. N. (2025). Tunable wavelength laser surface profilometry through tilted interference. Measurement, 242(A), 115838. https://doi.org/10.1016/j.measurement.2024.115838

5. Tillo, D., & Ivan, J. S. (2024). Estimating unwrapped phase through phase gradients. Optik, 171901.https://doi.org/10.1016/j.ijleo.2024.171901

6. Jagroop, Dakshin Tillo, C. S. Narayanamurthy, & Dayala Dev, S. (2024). Precise refractive index measurement of fused silica optics. Measurement Science and Technology, 10.1088/1361-6501/ad4382.

7. Panchal, P., Kadhiarakath Manathparambil, Z., & Narayanamurthy, C. S. (2024). Optimum design technique for two lenses telescopic system using collimation testing and Zernike polynomials. Journal of Optics, 10.1007/s12596-023-01426-0.

8. Karnati, S., & Pathak, B. (2024). Analysis of biospeckle pattern using grey-level and color-channel assessment methods. Laser Physics, 34(10), 105601. 

9. Sadhukhan, S., & Narayanamurthy, C. S. (2024). Turbulence impacted wavefront corrections using beam modulation technique. Optics Communications, 10.1016/j.optcom.2024.130716.

10. Gautam, S. K., & Naik, D. N. (2023). Deformation estimation along a desired direction using digital speckle correlation technique. Frontiers in Optics + Laser Science 2023 (FiO, LS), paper JM7A.102.

11. Athira, T. S., & Naik, D. N. (2023). Nonlinear phase accumulation for a linear path delay in low coherence Fourier transform spectral interferometry. Physica Scripta, 10.1088/1402-4896/acd0e2.

12. S., L., Naik, D. N., & Narayanamurthy, C. S. (2023). Insensitivity of partially coherent Gaussian-Schell model beams to the impact of dynamic Kolmogorov type turbulence. Journal of Modern Optics, 70(3), 161–169. https://doi.org/10.1080/09500340.2023.2219770

13. Gautam, S. K., Panchal, P., Athira, T. S., & Naik, D. N. (2022). Phase retrieval algorithm using edge point referencing. Optics Letters, https://doi.org/10.1364/OL.475163.

14. Arun, S., & Ivan, J. S. (2022). Polarisation-spatial entanglement upon reflection across a dielectric. Optics Communications, https://doi.org/10.1016/j.optcom.2022.128006.

15. Lekshmi, S. R., Naik, D. N., & Narayanamurthy, C. S. (2022). Fried's coherence length measurement of dynamic Kolmogorov type turbulence using the autocorrelation function. Journal of Optics, 10.1088/2040-8986/ac3f91.

16. Ramakrishnan, J., & Ivan, J. S. (2022). A quantum genetic algorithm for optimization problems on the Bloch sphere. Quantum Information Processing, https://link.springer.com/article/10.1007%2Fs11128-021-03368-7.

17. Ramakrishnan, J., & Ivan, J. S. (2022). Ameliorated phase sensitivity through intensity measurements in a Mach–Zehnder interferometer. Quantum Information Processing, https://doi.org/10.1007/s11128-021-03376-7.

18. Sadhukhan, S., Sadhukhan, S., Brundavanam, M. M., & Narayanamurthy, C. S. (2022). Spectral switch anomalies in a Sagnac interferometer with respect to a Galilean frame. Journal of the Optical Society of America A, https://doi.org/10.1364/JOSAA.468755.

19. Panchal, P., Naik, D. N., & Narayanamurthy, C. S. (2021). Insensitivity of higher order topologically charged Laguerre–Gaussian beams to dynamic turbulence impact. Optics Communications, https://doi.org/10.1016/j.optcom.2021.127023.

20. Asokan, S., & Ivan, J. S. (2021). Polarization-spatial Gaussian entanglement in partially coherent light fields. Journal of the Optical Society of America A: Optics and Image Science, and Vision, https://doi.org/10.1364/JOSAA.430464.

21. Athira, T. S., & Naik, D. N. (2021). Amplified sensing of optical phase difference through the phase of the resultant field. Journal of Optics, 10.1088/2040-8986/ac213e.

22. Budhiraju, V. R., Sriram, K. V., & Narayanamurthy, C. S. (2021). Design of two-mirror telescope systems with freeform surfaces: modified configurations and analysis. Journal of Astronomical Telescopes, Instruments, and Systems, 10.1117/1.JATIS.7.1.014002.

23. Asokan, S., Yasir, P. A. A., & Ivan, J. S. (2020). Estimation of dislocated phases in wavefronts through intensity measurements using a Gerchberg–Saxton type algorithm. Applied Optics, https://doi.org/10.1364/AO.400482.

24. Gautam, S. K., Singh, R. K., Narayanamurthy, C. S., & Naik, D. N. (2020). Single-shot and twin-image free unique phase retrieval using an aspect of autocorrelation that considers the object asymmetry. Journal of the Optical Society of America, 10.1364/JOSAA.402731.

25. Tiwari, V., Gautam, S. K., Naik, D. N., Singh, R. K., & Bisht, N. S. (2020). Characterization of a spatial light modulator using polarization-sensitive digital holography. Applied Optics, 10.1364/AO.380572.

26. Asokan, S., & Ivan, J. S. (2020). Gaussian spatial-polarization entanglement in a folded Mach–Zehnder interferometer. Journal of the Optical Society of America A, https://doi.org/10.1364/JOSAA.386502.

27. Gautam, S. K., Singh, R. K., Narayanamurthy, C. S., & Naik, D. N. (2020). Reconstruction of complex-object using edge point referencing. Journal of Optics, 10.1088/2040-8986/ab7e8b.

28. Shishir, D., & Ivan, J. S. (2019). Non-Gaussian bosonic channels in the Tavis–Cummings model. Quantum Information Processing, 10.1007/s11128-019-2412-5.

29. Thomas, B. P., Pillai, S. A., & Narayanamurthy, C. S. (2018). Photoelastic digital holographic polariscope. Journal of Modern Optics, 10.1080/09500340.2019.1575484.

30. Garai, S., & Ivan, J. S. (2018). Gaussian channels that are eventually entanglement breaking yet asymptotically nonclassicality saving. Physical Review A, https://doi.org/10.1103/PhysRevA.98.052353.

31. Mishra, S., Gautam, S. K., Naik, D. N., Chen, Z., Pu, J., & Singh, R. K. (2018). Tailoring and analysis of vectorial coherence. Journal of Optics, 10.1088/2040-8986/aaef2a.

32. Sabapathy, K. K., Ivan, J. S., García-Patrón, R., & Simon, R. (2018). Divergence-free approach for obtaining decompositions of quantum-optical processes. Physical Review A, https://doi.org/10.1103/PhysRevA.97.022339.

33. Yasir, P. A. A., & Ivan, J. S. (2018). Estimation of phases with dislocations in paraxial wave fields from intensity measurements. Physical Review A, https://doi.org/10.1103/PhysRevA.97.023817.

34. Asokan, S., & Ivan, J. S. (2018). Radial–angular entanglement in Laguerre–Gaussian mode superpositions. Journal of the Optical Society of America A, https://doi.org/10.1364/josaa.35.000785.

35. Matta, S., Vayalamkuzhi, P., Naik, D. N., & Viswanathan, N. K. (2018). Evolution of phase singularities from fork-shaped phase grating in the near-field. Journal of Optics, 10.1088/2040-8986/aac68c.

36. Sai Meghana, T., & Ivan, J. S. (2018). Free space optical communication using a shape parameter. The European Physical Journal Plus, 133, 1-11. 

Conference proceedings

1. Deepak K. Jaduvanshi, Biswajit Pathak and C. S. Narayanamurthy  (2024). “Accurate Phase Reconstruction in Digital Holography Microscopy Using Fresnel Biprism”, Proceedings of SPIE: 12852, 128520S.

2. Haneen, V. N., & Naik, D. N. (2024). Introducing phase variations in spatial coherence using dynamics of spatially incoherent source. In Women in Optics and Photonics in India 2023 (Vol. 13108, p. 1310811). SPIE.

3. Athira, T. S., Panchal, P., Gautam, S. K., & Naik, D. N. (2021). Revealing relative phase shift of individual beams through the phase of the superposed beam. ICOL-2019: Proceedings of the International Conference on Optics and Electro-Optics, Dehradun, India (pp. 571-573). Springer Singapore.

4. Athira, T. S., & Naik, D. N. (2023). Sensitivity enhancement in low coherence Fourier transform spectral interferometry. In Women in Optics and Photonics in India 2022 (Vol. 12638). SPIE.