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Enam Chowdhury

  • Assistant Professor, Physics
  • Assistant Professor, Materials Science Engineering
  • Electrical & Computer Engr.
  • 2041 College Rd
    Columbus, OH 43210
  • 614-292-4286
  • 614-247-8392

About

Dr. Enam Chowdhury is an Assistant Professor of Electrical and Computer Engineering, Material Science Engineering and Physics at The Ohio State University. Professor Chowdhury’s group studies materials in extreme conditions of interaction with high and ultra-high intensity lasers, by which materials may be exposed to light intensities more than 100 billion-billion times the intensity of sunlight on the earth. Under such extreme conditions, materials tend to go through rapid transformation, which has wide ranging fundamental science and future industrial applications, like development of next generation particle accelerators, cancer therapy, planetary science, astrophysics and laser micro-and nano-machining and photonic devices. He led the design and construction of the 400 TW SCARLET laser system at The Ohio State University High Energy Density Physics (HEDP) Laboratory in conjunction with a team of scientists, engineers and graduate students. SCARLET was completed in 2012; since then the team has moved into a very active phase of research using what is currently one of the most intense lasers in the world. It is part of seven founding facilities of the LaserNetUS, a national high intensity laser user facility network funded by the Department of Energy.

Education

Dr. Chowdhury received his A.B. in Physics from Wabash College, M.S. in Electrical and Computer Engineering and PhD in Physics from University of Delaware.

Chowdhury group’s primary research tracks

Femtosecond laser induced damage fundamentals and applications, probing laser damage with atomic spatial and femtosecond temporal resolution, high energy density conditions

Non-perturbative laser interaction with solids, harmonic generation, dynamic meta-photonics

Ultra-intense laser materials interaction, relativistic interactions, particle acceleration and novel NDE source generation for material investigation.

Journal Articles

2019

  • Shcherbakov, M.R.; Werner, K.; Fan, Z.; Talisa, N. et al., 2019, "Photon acceleration and tunable broadband harmonics generation in nonlinear time-dependent metasurfaces." Nature Communications 10, no. 1,
  • Danson, C.N.; Haefner, C.; Bromage, J.; Butcher, T. et al., 2019, "Petawatt and exawatt class lasers worldwide." High Power Laser Science and Engineering

2018

  • Sergaeva, O.; Gruzdev, V.; Austin, D.; Chowdhury, E., 2018, "Ultrafast excitation of conduction-band electrons by high-intensity ultrashort laser pulses in band-gap solids: Vinogradov equation versus Drude model." Journal of the Optical Society of America B: Optical Physics 35, no. 11, 2895-2905 - 2895-2905.

2014

  • Mitchell, R.A.; Schumacher, D.; Chowdhury, E., 2014, "Modeling femtosecond pulse laser damage using particle-in-cell simulations." Optical Engineering 53, no. 12,

2005

  • Palaniyappan, S.; Dichiara, A.; Chowdhury, E.; Falkowski, A. et al., 2005, "Ultrastrong field ionization of Nen+ (n≤8): Rescattering and the role of the magnetic field." Physical Review Letters 94, no. 24,

2000

  • Yang, J.Z.H.; Chowdhury, E.A.; Walker, B.C., 2000, "6 W, 5 mJ amplification with a 28% efficient, kHz, Ti:sapphire regenerative amplifier." Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest 290 - 290.
  • Kolodzey, J.; Chowdhury, E.A.; Adam, T.N.; Qui, G. et al., 2000, "Electrical conduction and dielectric breakdown in aluminum oxide insulators on silicon." IEEE Transactions on Electron Devices 47, no. 1, 121128 - 121128.

1999

  • Olowolafe, J.O.; Rau, I.; Kolodzey, J.; Chowdhury, E.A. et al., 1999, "Structural, electronic and optical properties of AlN-based oxides on Si and GaN substrates." IEEE Semiconducting and Semi-Insulating Materials Conference, SIMC 222-226 - 222-226.

Papers in Proceedings

2020

  • Tripepi, M.; Hastings, M.; Schweinsberg, A.; Vanderhoef, L. et al. "Midwave infrared ultrashort pulse laser frequency conversion in single crystal, polycrystalline, and amorphous optical materials." (1 2020).

2019

  • Talisa, N.; Tripepi, M.; Harris, B.; Alshafey, A. et al. "Single-Shot Few-Cycle Pulse Laser-induced Damage and Ablation of HfO2/SiO2-based Optical Thin Films." (5 2019).
  • Hastings, M.G.; Werner, K.; Schweinsberg, A.; Austin, D. et al. "Modeling Harmonic Generation in Poly crystalline ZnSe." (5 2019).
  • Ensley, T.R.; Hastings, M.G.; Werner, K.; Schweinsberg, A. et al. "Ultrafast nonlinear refraction measurements of transparent materials in the mid-infrared for modeling harmonic and supercontinuum generation." (1 2019).
  • Vanderhoef, L.; Schweinsberg, A.; Werner, K.; Tripepi, M. et al. "Mid-infrared spectroscopy of laser filamentation in optics." (1 2019).
  • Werner, K.; Tripepi, M.; Schweinsberg, A.; Vanderhoef, L. et al. "Generation of broad spectral components from mid-infrared ultrashort pulse laser propagation through single-and poly-crystalline optical materials." (8 2019).
  • Erbsen, W.; Morrison, J.; Frische, K.; George, K.M. et al. "Dual chirped pulse amplification (CPA) ultra-intense system for efficient MeV ion acceleration at kHz repetition rate." (8 2019).
  • Tripepi, M.; Schweinsberg, A.; Werner, K.; Talisa, N. et al. "Non-linear optics and harmonic generation in ZnS using femtosecond mid-IR pulses near zero dispersion wavelength." (5 2019).
  • Werner, K.; Tripepi, M.; Schweinsberg, A.; Hastings, M. et al. "Generation of broad spectral components from midwave infrared ultrashort pulse laser propagation through ZnSe and ZnS." (1 2019).
  • Berger, P.R.; Li, M.; Mattei, R.M.; Niang, M.A. et al. "Advancements in Solution Processable Devices using Metal Oxides For Printed Internet-of-Things Objects." (3 2019).
  • Tripepi, M.; Schweinsberg, A.; Werner, K.; Talisa, N. et al. "Non-linear optics and harmonic generation in ZnS using femtosecond mid-IR pulses near zero dispersion wavelength." (1 2019).
  • Talisa, N.; Tripepi, M.; Harris, B.; AlShafey, A. et al. "Single-shot few-cycle pulse laser-induced damage and ablation of HfO2/SiO2-based optical thin films." (1 2019).
  • Hastings, M.G.; Werner, K.; Schweinsberg, A.; Wilmer, B.L. et al. "Modeling harmonic generation in polycrystalline ZnSe." (1 2019).

2018

  • Talisa, N.; Werner, K.; Chowdhury, E. "Time-Resolved Surface Microscopy of Single Shot Few-Cycle Pulse Laser Ablation of Single Layer TiO2Thin Films." (8 2018).
  • Shcherbakov, M.R.; Werner, K.; Fan, Z.; Talisa, N. et al. "Nonlinear manifestations of photon acceleration in rapidly evolving semiconductor metasurfaces." (1 2018).
  • Shcherbakov, M.R.; Werner, K.; Fan, Z.; Talisa, N. et al. "Nonlinear Manifestations of Photon Acceleration in Rapidly Evolving Semiconductor Metasurfaces." (8 2018).
  • Chowdhury, E.; Talisa, N.; Werner, K.; Irani, S. et al. "Strong Field Laser induced surface structuring in Mid-IR wavelengths." (1 2018).
  • Werner, K.; Talisa, N.; Wilmer, B.; Vanderhoef, L. et al. "Ultrafast mid-infrared non-perturbative nonlinear optics in polycrystalline zinc selenide." (8 2018).
  • Talisa, N.; Werner, K.; Chowdhury, E. "Time-resolved surface microscopy of single shot few-cycle pulse laser ablation of single layer TiO2thin films." (1 2018).
  • Werner, K.; Talisa, N.; Wilmer, B.; Vanderhoef, L. et al. "Ultrafast mid-infrared non-perturbative nonlinear optics in polycrystalline zinc selenide." (1 2018).
  • Werner, K.; Talisa, N.; Wilmer, B.; Vanderhoef, L. et al. "Mid-wave infrared nonlinear optics in polycrystalline zinc selenide and zinc sulfide." (1 2018).

2017

  • Gruzdev, V.; Austin, D.; Sergaeva, O.; Chowdhury, E. "Simulations of ultrafast laser-induced excitation and heating of electron sub-system of semiconductors with the Vinogradov equation and multi-band Keldysh formula." (11 2017).

2015

  • Poole, P.; Willis, C.; Cochran, G.; McMahon, M. et al. "Liquid crystals as high repetition rate targets for ultra intense laser systems." (1 2015).

2014

  • Chowdhury, E.; Austin Dr, A.; Kafka, K.; Blaga, C. et al. "Femtosecond laser solid interaction near material damage threshold at mid IR wavelengths." (1 2014).
  • Chowdhury, E.; Austin, D.; Kafka, K.; Blaga, C. et al. "Femtosecond laser solid interaction near material damage threshold at mid IR wavelengths." (1 2014).
  • Mitchell, R.A.; Schumacher, D.; Chowdhury, E. "Using Particle-In-Cell simulations to model femtosecond pulse laser damage." (1 2014).

2013

  • Mitchell, R.A.; Schumacher, D.; Chowdhury, E. "Modeling femtosecond pulse laser damage on conductors using Particle-In-Cell simulations." (1 2013).
  • Poole, P.; Trendafilov, S.; Shvets, G.; Smith, D. et al. "Femtosecond laser damage threshold of pulse compression gratings for petawatt scale laser systems." (11 2013).
  • Lim, S.; Montenegro, M.; Pradhan, A.K.; Nahar, S.N. et al. "Broadband and monochromatic X-ray irradiation of platinum: Monte Carlo simulations for dose enhancement factors and resonant theranostics." (4 2013).

2012

  • Feister, S.; George, K.M.; Jiang, S.; Chowdhury, E. et al. "Wavefront transfer for on-shot focal spot characterization at the 400 TW SCARLET laser." (1 2012).
  • Chowdhury, E.; Poole, P.; Daskalova, R.; Freeman, R.R. et al. "Pulse width dependent damage testing of critical components in vacuum for petawatt class short pulse lasers." (1 2012).
  • Feister, S.; George, K.M.; Jiang, S.; Chowdhury, E. et al. "Wavefront transfer for on-shot focal spot characterization at the 400 TW SCARLET laser." (12 2012).

2011

  • Poole, P.; Willis, C.; Daskalova, B.; Jiang, S. et al. "Development of a 0.5 PW high contrast ti: Sapphire laser system at OSU to achieve peak focal intensities exceeding 1022 W/cm2." (1 2011).
  • Chowdhury, E.; Poole, P.; Daskalova, R.; Freeman, R.R. et al. "Pulse width dependent damage testing of critical components in vacuum for petawatt class short pulse lasers." (12 2011).
  • Poole, P.; Willis, C.; Daskalova, B.; Jiang, S. et al. "Development of a 0.5 PW high contrast ti: Sapphire laser system at OSU to achieve peak focal intensities exceeding 1022 W/cm2." (12 2011).
  • Poole, P.; Willis, C.; Chowdhury, E.; Daskalova, R. et al. "Damage testing of critical optical components for high power ultra fast lasers." (12 2011).
  • Poole, P.; Willis, C.; Chowdhury, E.; Daskalova, R. et al. "Damage testing of critical optical components for high power ultra fast lasers." (12 2011).

2010

  • Chowdhury, E.; Poole, P.; Jiang, S.; Taylor, B. et al. "Damage testing of critical optical components for high power ultra-fast lasers." (12 2010).

2007

  • Chowdhury, E.A.; Link, A.; Offermann, D.; Van Woerkom, L. et al. "In situ single shot peak intensity calibration of multi-joule ultra-intense laser focus." (1 2007).

2006

  • Ghebregziabher, I.; Chowdhury, E.A.; MacDonald, J.; Walker, B.C. "Bremsstrahlung radiation from the ultraintense field ionization of atoms." (1 2006).

2005

  • Ghebregziabher, I.; Chowdhury, E.A.; MacDonald, J.; Walker, B.C. "Bremsstrahlung radiation from the ultraintense field ionization of atoms." (10 2005).
  • Ghebregziabher, I.; Chowdhury, E.A.; MacDonald, J.; Walker, B.C. "Bremsstrahlung radiation from the ultraintense field ionization of atoms." (1 2005).
  • Ghebregziabher, I.; Chowdhury, E.A.; MacDonald, J.; Walker, B.C. "Bremsstrahlung radiation from the ultraintense field ionization of atoms." (1 2005).

2003

  • Chowdhury, E.A.; Walker, B.C. "Relativistic rescattering effects in atoms and ions in ultra-intense fields." (1 2003).
  • Chowdhury, E.A.; Ongadi, G.; Walker, B.C.; Tamosaitis, R.S. et al. "Micro-optic spatial mode conversion for terawatt class amplifiers." (1 2003).