All Stories

  1. Direct generation of multicolor Bessel beams from a Pr3+: WPFG fiber laser

    Article • Optics Express, February 2024, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  2. An Intriguing Interpretation of 1D and 2D Non-Diffracting Modes in Cosine Profile

    Article • Photonics, December 2023, MDPI AG

    Mr Srinivasa Rao Allam

  3. Direct generation of lower-order cylindrical vector vortex modes from an end-pumped Pr3+:LiYF4 laser

    Article • Applied Optics, November 2023, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  4. Illustrations of Bessel Beams in s-Polarization, p-Polarization, Transverse Polarization, and Longitudinal Polarization

    Article • Photonics, September 2023, MDPI AG

    Mr Srinivasa Rao Allam

  5. Red, orange, and dual wavelength vortex emission from Pr:WPFGF fiber laser using a microscope slide output coupler

    Article • Optics Express, May 2023, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  6. Generation of higher-order Laguerre–Gaussian modes from a diode-pumped Pr3+:LiYF4 laser with an intra-cavity spherical aberration

    Article • Journal of the Optical Society of America B, January 2023, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  7. Direct generation of 523 nm orbital Poincaré mode from a diode-pumped Pr3+:LiYF4 laser with an off-axis optical needle pumping geometry

    Article • Optics Express, September 2021, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  8. Optical vortex lattice mode generation from a diode-pumped Pr3+:LiYF4 laser

    Article • Journal of Optics, June 2021, Institute of Physics Publishing

    Mr Srinivasa Rao Allam

  9. Nonlinear frequency conversion of 3D optical bottle beams generated using a single axicon

    Article • Optics Letters, January 2021, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  10. Generating approximate non-diffractive three dimensional micro-size optical potentials by superposition

    Article • Optics Communications, December 2020, Elsevier

    Mr Srinivasa Rao Allam

  11. Ultraviolet intracavity frequency-doubled Pr3+:LiYF4 orbital Poincaré laser

    Article • Optics Express, November 2020, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  12. Characterization of off-axis phase singular optical vortex and its nonlinear wave-mixing to generate control broad OAM spectra

    Article • Physica Scripta, February 2020, Institute of Physics Publishing

    Mr Srinivasa Rao Allam

  13. Analysis of multi-photon absorption: z-scan using ultra-short Gaussian vortex beam

    Article • Laser Physics, December 2019, Institute of Physics Publishing

    Mr Srinivasa Rao Allam

  14. Theoretical study on saturable absorption using Gaussian vortex beam z-scan

    Article • Journal of Nonlinear Optical Physics & Materials, December 2019, World Scientific Pub Co Pte Lt

    Mr Srinivasa Rao Allam

  15. Equations for beam waist measurement of high peak power lasers

    Article • Journal of Nonlinear Optical Physics & Materials, June 2019, World Scientific Pub Co Pte Lt

    Mr Srinivasa Rao Allam

  16. Nonlinear spectroscopy of three-level cascade systems in the act of saturable and reverse saturable absorption

    Article • Optik, March 2019, Elsevier

    Mr Srinivasa Rao Allam

  17. Single photon nonlinear absorption spectroscopy of cascade energy level systems

    Article • Optik, February 2019, Elsevier

    Mr Srinivasa Rao Allam

  18. High-power, high repetition-rate, ultrafast fibre laser based source of DUV radiation at 266 nm

    Article • OSA Continuum, December 2018, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  19. Nonlinear absorption study in four and five energy level systems

    Article • Optik, October 2018, Elsevier

    Mr Srinivasa Rao Allam

  20. Femtosecond laser pulse assisted photoporation for drug delivery in Chronic myelogenous leukemia cells

    Article • Journal of Photochemistry and Photobiology B Biology, October 2018, Elsevier

    Mr Srinivasa Rao Allam

  21. On-axis intensity modulation-free, segmented, zero-order Bessel beams with tunable ranges

    Article • Optics Letters, June 2018, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  22. Nonlinear frequency doubling characteristics of asymmetric vortices of tunable, broad orbital angular momentum spectrum

    Article • Applied Physics Letters, April 2018, American Institute of Physics

    Mr Srinivasa Rao Allam

  23. Comparison of rate equation models for nonlinear absorption

    Article • Optik, April 2018, Elsevier

    Mr Srinivasa Rao Allam

  24. Optical limiting in the presence of simultaneous one and two photon absorption

    Article • Optik, March 2018, Elsevier

    Mr Srinivasa Rao Allam

  25. One, two and three photon absorption of two level system in femto-second laser excitation

    Article • Journal of Optics, June 2017, Springer Science + Business Media

    Mr Srinivasa Rao Allam

  26. Third order optical nonlinear studies and its use to estimate thickness of sandwiched films of tetra-phenyl porphyrin derivatives

    Article • Journal of Nonlinear Optical Physics & Materials, September 2016, World Scientific Pub Co Pte Lt

    Mr Srinivasa Rao Allam

  27. Understanding the effect of bound excitons on two photon absorption process in anatase TiO2 nanospheres using ultrafast pulses

    Article • Journal of Nonlinear Optical Physics & Materials, June 2016, World Scientific Pub Co Pte Lt

    Mr Srinivasa Rao Allam

  28. Accounting for experimental artifacts in the z-scan

    Article • January 2016, Optical Society of America (OSA)

    Mr Srinivasa Rao Allam

  29. Theoretical study on nonlinear properties of four level systems under nano-second illumination

    Article • Laser Physics, April 2015, Institute of Physics Publishing

    Mr Srinivasa Rao Allam

  30. Study of spatial rings in TPPOH 4 doped in boric acid glass

    Article • IOP Conference Series Materials Science and Engineering, February 2015, Institute of Physics Publishing

    Mr Srinivasa Rao Allam

  31. Study of optical Laue diffraction

    Article • January 2014, American Institute of Physics

    Mr Srinivasa Rao Allam