Dr. P. Prem Kiran-Profile

Name: P. Prem Kiran

University Of Hyderabad

Publications overview:

    For more details http://scholar.google.co.in/citations?user=8Z4dQE4AAAAJ&hl=en
  • In peer reviewed Journals/publications (including papers in press)    :31
  • Recognized and reputable journals with ISBN/ISSN number  :26
  • Book chapters :4
  • Conference proceedings as full papers :30
  • Conference & Workshop contributions (oral & poster) :~53
Significant Publications :

  1. Ch. Leela, P. Venkateshwarlu, R.V. Singh, P. Verma and P. Prem Kiran, “Spatio-temporal dynamics behind the shock front from compacted nanopowders”, Opt. Exp. 22, S2, A268 - A275 (2014). Pdf

  2. Ch. Leela, S. Bagchi, V. Rakesh Kumar, S.P. Tewari, and P. Prem Kiran, “Dynamics of laser induced micro-shock waves and hot core plasma in quiescent air”, Laser Particle Beams 31(02), pp. 263-272 (2013). pdf
  3. S. Bagchi, P. Prem Kiran, W.M. Wang , Z. M. Sheng, M. K. Bhuyan, M. Krishnamurthy and G. Ravindra Kumar, “Surface Plasmon mediated enhanced MeV ion emission from sub-lambda grating surfaces with moderately intense (1015-1016 W cm-2) femtosecond laser pulses”, Phys. Plasmas 19, 030703 (2012) Pdf
  4. *S. Bagchi, P. Prem Kiran, K. Yang, A.M. Rao, M.K. Bhuyan, M. Krishnamurthy and G. Ravindra Kumar, “Bright, low debris, ultrashort hard x-ray table top source using carbon nanotubes”, Physics of Plasmas, 18, 014502 1-4 (2011). Pdf
  5. This article brings out the advantages of a nanostructured surfaces over a traditionally used polished metal surface as a source of X-rays and lead the way to table-top laser based x-ray source. This work revealed that the MWNT-coated surface produced an X-ray flux that was two orders of magnitude more intense and with three orders of magnitude better suppression in ion debris than polished copper target.

    *Appeared as Research highlight in Nature India; doi:10.1038/nindia.2011.12; Published online 31 January 2011

    *Research Highlights in Physics of Plasmas

    *Appeared in TOP 20 most downloaded papers in the months of March and August 2011

  6. S. Bagchi, P. Prem Kiran, M.K. Bhuyan, M. Krishnamurthy, K. Yang, A.M. Rao and G. Ravindra Kumar, “Surface roughness-aided hard x-ray emission from carbon nanotubes”, Pramana 75(6), 1197-1202 (2010).

  7. *P. Prem Kiran, S. Bagchi, C.L. Arnold, S. Sivaram Krishnan, G. Ravindra Kumar, and A. Couairon “Filamentation without intensity clamping”, Optics Express 18, 21504 – 21510 (2010). Pdf
  8. This article reports the observations about the new regime of filamentation without intensity clamping. The measurements on the minimum cutoff wavelength of the supercontinuum emission (SCE) associated with filaments indicate that intensity is not clamped under tight focusing geometry.

  9. *P. Prem Kiran, S. Bagchi, S. Sivaram Krishnan, C.L. Arnold, G. Ravindra Kumar, and A. Couairon “Focal dynamics of multiple filaments: Microscopic Imaging and Reconstruction”, Phys. Rev. A 82, 013805 (2010). Pdf
  10. Direct imaging of the entire filamentary structures arising from the tightly focused intense femtosecond pulses is presented. This study brought out a two-rate phenomenon in the growth of filament number with laser power. A new regime of complete ionization of the medium is observed due to the combination of tight focusing conditions, strong nonlinear absorption and plasma defocusing, driving the intensity above a certain threshold. Clear deviation from the notion of intensity saturation in standard ultrashort pulse filamentation due to intensity clamping occurring at levels 1013 W/cm2 is observed to fail. An analogy between the mechanisms of filamentation of fs laser pulses and oscillatory motion of a particle in the well is introduced

  11. P. Prem Kiran, ShivaKiran N. Bhakta B., Goutam De, and D. Narayana Rao, “Nonlinear optical properties and surface plasmon enhanced optical limiting properties of Ag-Cu nanoclusters co-doped in SiO2 sol-gel films”, J. Appl. Phys. 96, 6717 – 6723 (2004). Pdf
  12. P. Prem Kiran, D. Raghunath Reddy, B.G. Maiya, Aditya Dharmadhikari, G. Ravindra Kumar and D. Narayana Rao, “Enhanced optical limiting and nonlinear absorption properties of azoarene appended phosphorus (V) tetratolylporphyrins”, Appl. Opt. LPEO 41, 7631 – 7636 (2002). Pdf
  13. P. Prem Kiran, N.K.M. Naga Srinivas, D. Raghunath Reddy, B.G. Maiya, Aravinder S. Sandhu, Aditya Dharmadhikari, G. Ravindra Kumar, D. Narayana Rao, “Heavy atom effect on nonlinear absorption and optical limiting characteristics of 5,10,15,20-(tetratolyl) porphyrinato phosphorus (V) dichloride”, Opt. Commun. 202, 347 – 352 (2002). Pdf
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University of Hyderabad, P.O. Central University, Hyderabad 500046, India.
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