K V Adarsh

  • Designation : Associate Professor
  • Phone : +91 755 269 1207, 669 1207
  • Email : adarsh@iiserb.ac.in
  • Fax : +91 755 669 2392

Group Homepage


Academic Details

    Assistant Professor (June 2009-), Physics, Indian Institute of Science Education and Research, Bhopal, India.

    Post Doctoral Fellow (2008- 2009), Department of Physics, Technion-Israel Institute of Technology, Israel.

    Post Doctoral Fellow (2007, Feb- Dec), Institute for Physics, University of Rostock, Germany..

    Visiting Research Scholar ( 2006, Jan June), Department of Material Science and Engineering, Lehigh University, Bethlehem, USA.

    Ph.D (Experimental Condensed Matter Physics), Department of Physics , Indian Institute of Science, Bangalore 560 012, India.

  • Nonlinear Optics: Ultrafast effects in semiconductors, optical control of multi-photon absorption, Electro-optic effects, Generation and modulation of Terahertz radiation, Supercontinuum generation in photonic crystal fibers; Ensembles of interacting solitons; Modulation instability in optical fibers; Soliton lasers.
  • Condensed Matter Physics: Nano-structuring in chalcogen / chalcogenide and metal / chalcogenide multilayers; Quantum size effects and tunability of optical parameters in amorphous semiconductors.
  • The nonlinear optical properties of glasses have recently become the focus of growing scientific and technological interest. In particular, chalcogenide glasses have emerged as promising candidates due to their large optical nonlinearity and sub-picosecond response time. However, they are far from being inducted into a real time application, as they are highly sensitive to bandgap light. Moreover, magnitude of the light induced effects is much larger than any other cumulative effects like thermal nonlinearity. The prime focus of my research group at IISER Bhopal is to explore experimentally the underlying phenomena behind the ultrafast nonlinear optical response of chalcogenide glasses and learn how to control, tailor and enhance them.
  • Authors Title of Article Journal Year
    Amiya Ranjan Barik,  KV Adarsh Ultrafast photoinduced anisotropy in GeSe 2 thin film
    Details
    Optics Letters 2017
    Jaya Pal,  Suman Manna,  Anirban Mondal,  Shyamashis Das,  KV Adarsh,  Angshuman Naf Colloidal Synthesis and Photophysics of M3Sb2I9 (M=Cs and Rb) Nanocrystals: Lead-Free Perovskites
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    Angewandte Chemie 2017
    Rituraj Sharma,  Aneesh J,  Rajesh Kumar Yadav,  Suresh Sanda,  Amiya Ranjan Barik,  Ashish Kumar Mishra,  Tuhim Kumar Maji,  Debjani Karmakar,  KV Adarsh Strong interlayer coupling mediated giant two-photon absorption in MoSe2/graphene oxide heterostructure: Quenching of exciton bands
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    Physical Review B 2016
    Rajesh Kumar Yadav,  Rituraj Sharma,  Aneesh J,  Abhiramnath P,  KV Adarsh Saturable absorption in one-dimensional Sb2Se3 nanowires in visible to near infrared region
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    Optics Letters 2016
    Amit Kumar Rana,  Aneesh J,  Yogendra Kumar,  Arjunan MS,  KV Adarsh,   Somaditya Sen,  Parasharam M Shirage Enhancement of two photon absorption with Ni doping in the dilute magnetic semiconductor ZnO crystalline nanorods
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    Applied Physics Letters 2015
    Pritam Khan,  Rituraj Sharma,  Uday Deshpande,  KV ADarsh First observation of the temperature-dependent light-induced response of Ge25As10Se65 thin films
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    Optics Letters 2015
    Rituraj Sharma,  Deepak Kumar,  Varadharajan Srinivasan,  Himanshu Jain,  KV Adarsh Engineering the optical response of a-Se thin films by employing morphological disorder
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    Optics Express 2015
    Pritam Khan,  Tarun Saxena,  KV Adarsh Tailoring between network rigidity and nanosecond transient absorption in a-GexAs35-xSe65 thin films
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    Optics Letters 2015
    Pritam Khan,  Rajesh Kumar Yadav,  Arinjoy Bhattacharya,  Abin Joshy,  Aneesh J,  KV Adarsh Tuning nanosecond transient absorption in a–Ge25As10Se65 thin films via background illumination
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    Optics Letters 2015
    Wasim J Mir,  Abhishek Swarnka,  Rituraj Sharma,  Aditya Katti,  KV Adarsh,  Angshuman Nag Origin of unusual excitonic absorption and emission from colloidal Ag2S nanocrystals: Ultrafast photophysics and solar cell
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    The Journal of Physical Chemistry Letters 2015
    Rituraj Sharma,  Kiran Prasai,  David A Drabold,  KV Adarsh Ultrafast defect dynamics: A new approach to all optical broadband switching employing amorphous selenium thin films
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    AIP Advances 2015
    Pritam Khan,   Prodip Acharja,  Abin Joshy,  Arinjoy Bhattacharya,  Deepak Kumar,  KV Adarsh Nanosecond light-induced transient absorption in As2S3: Self-trapped exciton recombination in amorphous chalcogenides
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    Journal of Non-Crystalline Solids 2015
    Rituraj Sharma,  Aneesh J,  Rajesh Kumar Yadav,  Sam Eppen George,  KV Adarsh Ultrafast Saturable Absorption in a-As2S5/Au Heterostructures
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    OSA Technical Digest (online) 2015
    Pritam Khan,  Amiya Ranjan Barik,  EM Vinod,  KS Sangunni,  KV Adarsh Observation of photobleaching and intensity dependent kinetics in Ge22As22Se56 thin films under sub-bandgap light illumination
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    IOP Conf. Series: Materials Science and Engineering 2015
    Pritam Khan,  Tarun Saxena,  Himanshu Jain,  KV Adarsh Nanosecond light induced, thermally tunable transient dual absorption bands in a-Ge5As30Se65 thin film
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    Scientific Reports 2014
    Pritam Khab,  Himanshu Jain,  KV Adarsh Role of Ge:As ratio in controlling the light-induced response of a-GexAs35−xSe65 thin films
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    Scientific Reports 2014
    Amiya Ranjan Barik,  Mukund Bapna,  David A Drabold,  KV Adarsh Ultrafast light induced unusually broad transient absorption in the sub-bandgap region of GeSe2 thin film
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    Scientific Reports 2014
    S Binu,  Pritam Khan,  AR Barik,  Rituraj Sharma,  R Golovchak,  Himanshu Jain,  KV Adarsh Photoinduced formation of Ag nanoparticles on the surface of As2S3/Ag thin bilayer
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    Materials Research Express 2014
    Pritam Khan,  KV Adarsh Composition dependent light induced crossover from photodarkening to photobleaching in GexAs35-xSe65 thin films
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    AIP Conference Proceedings 2014
    Rituraj Sharma,  Anjali K Sajeev,  Sam E George,  KV Adarsh Laser Assisted Single Step Method to Synthesize Ag Nanoparticles on Chalcogenide Surface
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    OSA Technical Digest 2014
    Mukund Bapna,  AR Barik,  KV Adarsh Nanosecond pulse triggered absorption modulation in a-As50Se50 chalcogenide thin films
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    Journal of Non-Crystalline Solids 2013
    AR Barik,  Ramakanta Naik,  KV ADarsh Unusual observation of fast photodarkening and slow photobleaching in a-GeSe 2 thin film
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    Journal of Non-Crystalline Solids 2013
    Mukund Bapna,  Rituraj Sharma,  AR Barik,  Pritam Khan,  Rakesh Ranjan Kumar,  KV Adarsh Light induced diffusion driven self assembly of Ag nanoparticles in a-Se/Ag bi-layer thin film with ultrafast optical response
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    Applied Physics Letters 2013
    Rakesh Ranjan Kumar,  AR Barik,  EM Vinod,  Mukund Bapna,  KS Sangunni,  KV Adarsh Crossover from photodarkening to photobleaching in a-Ge x Se 100-x thin films Authors
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    Optics Letters 2013
    AR Barik,  Mukund Bapna,  Ramakanta Naik,  Uday Deshpande,  T Shripathi,  KV Adarsh Intensity-dependent transient photodarkening in visible and far infrared absorption spectra of As 50 Se 50 thin film
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    Materials Chemistry and Physics 2013
    Rituraj Sharma,  Pritam Khan,  S Binu,  KV Adarsh Time evolution of photo-generated defect states in a-Se thin films
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    AIP Conference Proceedings 2013
    Pritam Khan,  Rituraj Sharma,  KV Adarsh Nanosecond Light Induced Transient Absorption In a-Ge5As30Se65 Thin Films
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    AIP Conference Proceedings 2013
    Pritam Khan,  AR Barik,  EM Vinod,  KS Sangunni,  Himanshu Jain,  KV Adarsh Coexistence of fast photodarkening and slow photobleaching in Ge 19 As 21 Se 60 thin films
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    Optics Express 2012
    Ramakanta Naik,  KV Adrash,  R Ganesan,  KS Sangunni Giant photoinduced optical bleaching at room and liquid helium temperatures in Sb/As 2 S 3 multilayered films
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    Optics Communications 2011
    AR Barik,  KV Adarsh,  Ramakanta Naik,  R Ganesan,  KS Sangunni,  D Zhao,  H Jain Kinetics of photodarkening at room and liquid He temperatures in a‐As45Se 55 thin film
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    Physica Status Solidi (c) 2011
    AR Barik,  KV Adarsh,  Ramakanta Naik,  R Ganesan,  G Yang,  D Zhao,  H Jain,  K Shimakawa Role of rigidity and temperature in the kinetics of photodarkening in Ge x As (45-x) Se 55 thin films
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    Optics Express 2011
    AR Barik,  KV Adrash,  Ramakanta Naik,  Suchand Sandeep,  Reji Philip,  H Jain Photoinduced transparency of effective three-photon absorption coefficient for femtosecond laser pulses in Ge16As29Se55 thin films
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    Applied Physics Letters 2011