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Enam Chowdhury

  • Research Associate Professor, Physics
  • Research Associate Professor, Materials Science Engineering
  • 1040 Physics Research Building
    191 W Woodruff Ave
    Columbus, OH 43210
  • 614-292-4286

About

Chowdhury's research interests are mainly in the field of short pulse lasers, ultra-fast dynamics of solids, ultra-intense and high energy density laser matter interaction. He led the design and construction of the 500 TW SCARLET laser system at the OSU High Energy Density Physics (HEDP) Laboratory in conjunction with a team of scientists, engineers and graduate students. SCARLET was completed in 2012 and 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.

Their experimental campaign currently focuses on particle acceleration, both for cancer treatment and for the activation and detection of nuclear materials, and on studying the fundamental mechanisms of damage caused to materials exposed to ultra-high intensity femtosecond laser light. In the effort to study how femtosecond lasers interact with solids near material damage threshold, his team is building the GRAY (GReater Average Yield) laser, which is a kHz femtosecond laser and will be capable of producing pulses from 5 - 500,000 fs, and wavelengths from 200 - 10,000 nm.

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,

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

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).
  • 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." (1 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).
  • Shcherbakov, M.R.; Werner, K.; Fan, Z.; Talisa, N. et al. "Nonlinear manifestations of photon acceleration in rapidly evolving semiconductor metasurfaces." (1 2018).
  • Chowdhury, E.A.; Morrison, J.T.; Frische, K.; Feister, S. et al. "Time resolved dynamics of sub-micron liquid sheet interaction with a relativistic intensity kHz laser." (1 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." (8 2018).
  • Werner, K.; Talisa, N.; Wilmer, B.; Vanderhoef, L. et al. "Ultrafast mid-infrared non-perturbative nonlinear optics in polycrystalline zinc selenide." (8 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).
  • Chowdhury, E.A.; Kafka, K.R.P.; Talisa, N.; Austin, D. et al. "Few cycle pulse Damage morphology of an ultra-broad band chirped mirror." in Conference on Lasers and Electro-Optics (CLEO). (1 2017).
  • Chowdhury, E.A.; Kafka, K.R.P.; Talisa, N.; Austin, D. et al. "Few cycle pulse Damage morphology of an ultra-broad band chirped mirror." (1 2017).
  • Chowdhury, E.A.; Kafka, K.R.P.; Talisa, N.; Austin, D. et al. "Few cycle pulse Damage morphology of an ultra-broad band chirped mirror." (10 2017).
  • Chowdhury, E.A.; Kafka, K.R.P.; Talisa, N.; Austin, D. et al. "Few cycle pulse damage morphology of an ultra-broad band chirped mirror." (1 2017).

2016

  • Negres, R.A.; Stolz, C.J.; Kafka, K.R.P.; Chowdhury, E.A. et al. "40-fs broadband low dispersion mirror thin film damage competition." in 48th SPIE Annual Laser Damage Symposium on Optical Materials for High-Power Lasers. (1 2016).
  • Talisa, N.; Werner, K.; Kafka, K.; Austin, D.R. et al. "Probing the dynamics of the interaction between few-cycle laser pulses and single crystal (100) Si and GaAs near the laser-induced damage threshold." in 48th SPIE Annual Laser Damage Symposium on Optical Materials for High-Power Lasers. (1 2016).
  • Kafka, K.R.P.; Talisa, N.; Tempea, G.; Austin, D.R. et al. "Few-cycle pulse laser-induced damage of thin films in air and vacuum ambience." (1 2016).
  • Kafka, K.R.P.; Talisa, N.; Tempea, G.; Austin, D.R. et al. "Few-cycle pulse laser-induced damage of thin films in air and vacuum ambience." (1 2016).
  • Negres, R.A.; Stolz, C.J.; Kafka, K.R.P.; Chowdhury, E.A. et al. "40-fs broadband low dispersion mirror thin film damage competition." (1 2016).
  • Chowdhury, E.; Kafka, K.R.P.; Austin, D.R.; Werner, K. et al. "Ultra-fast bandgap photonics in mid-IR wavelengths." in Conference on Ultrafast Bandgap Photonics. (1 2016).
  • Kafka, K.R.P.; Talisa, N.; Tempea, G.; Austin, D.R. et al. "Few-cycle pulse laser-induced damage of thin films in air and vacuum ambience." in 48th SPIE Annual Laser Damage Symposium on Optical Materials for High-Power Lasers. (1 2016).
  • Talisa, N.; Werner, K.; Kafka, K.; Austin, D.R. et al. "Probing the dynamics of the interaction between few-cycle laser pulses and single crystal (100) Si and GaAs near the laser-induced damage threshold." (1 2016).
  • Talisa, N.; Werner, K.; Kafka, K.; Austin, D.R. et al. "Probing the dynamics of the interaction between few-cycle laser pulses and single crystal (100) Si and GaAs near the laser-induced damage threshold." (1 2016).
  • Chowdhury, E.; Kafka, K.R.P.; Austin, D.R.; Werner, K. et al. "Ultra-fast bandgap photonics in mid-IR wavelengths." (1 2016).
  • Negres, R.A.; Stolz, C.J.; Kafka, K.R.P.; Chowdhury, E.A. et al. "40-fs broadband low dispersion mirror thin film damage competition." (1 2016).
  • Chowdhury, E.; Kafka, K.R.P.; Austin, D.R.; Werner, K. et al. "Ultra-fast bandgap photonics in mid-IR wavelengths." (1 2016).

2015

  • Kafka, K.R.P.; Chowdhury, E.A.; Negres, R.A.; Stolz, C.J. et al. "Test station development for laser-induced optical damage performance of broadband multilayer dielectric coatings." (1 2015).
  • Mitchell, R.A.; Schumacher, D.W.; Chowdhury, E.A. "First principles simulation of laser-induced periodic surface structure using the particle-in-cell method." (1 2015).
  • Stolz, C.J.; Negres, R.A.; Kafka, K.; Chowdhury, E. et al. "150-ps broadband low dispersion mirror thin film damage competition." (1 2015).
  • Chowdhury, E.; Kafka, K.; Mitchell, R.; Russell, A.M. et al. "Single shot femtosecond laser ablation of Copper: Experiment vs. Simulation." (1 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).
  • Chowdhury, E.; Kafka, K.; Mitchell, R.; Russell, A.M. et al. "Single-shot femtosecond laser ablation of copper: Experiment vs. simulation." (1 2015).
  • Kafka, K.R.P.; Chowdhury, E.A.; Negres, R.A.; Stolz, C.J. et al. "Test station development for laser-induced optical damage performance of broadband multilayer dielectric coatings." in 47th Annual Laser Damage Symposium on Optical Materials for High-Power Lasers. (1 2015).
  • Mitchell, R.A.; Schumacher, D.W.; Chowdhury, E.A. "First principles simulation of laser-induced periodic surface structure using the particle-in-cell method." in 47th Annual Laser Damage Symposium on Optical Materials for High-Power Lasers. (1 2015).
  • Chowdhury, E.; Kafka, K.; Mitchell, R.; Russell, A.M. et al. "Single shot femtosecond laser ablation of Copper: Experiment vs. Simulation." in 47th Annual Laser Damage Symposium on Optical Materials for High-Power Lasers. (1 2015).
  • Mitchell, R.A.; Schumacher, D.W.; Chowdhury, E.A. "First principles simulation of laser-induced periodic surface structure using the particle-in-cell method." (1 2015).
  • Kafka, K.R.P.; Chowdhury, E.A.; Negres, R.A.; Stolz, C.J. et al. "Test station development for laser-induced optical damage performance of broadband multilayer dielectric coatings." (1 2015).
  • Stolz, C.J.; Negres, R.A.; Kafka, K.; Chowdhury, E. et al. "150-ps broadband low dispersion mirror thin film damage competition." (1 2015).
  • Stolz, C.J.; Negres, R.A.; Kafka, K.; Chowdhury, E. et al. "150-ps broadband low dispersion mirror thin film damage competition." in 47th Annual Laser Damage Symposium on Optical Materials for High-Power Lasers. (1 2015).

2014

  • Kafka, K.; Austin, D.; Cheng, J.; Trendafilov, S. et al. "Laser Induced Periodic Surface Structure Formation in Germanium Above Laser Damage Fluence by Mid IR Femtosecond Laser Irradiation." (1 2014).
  • Mitchell, R.A.; Schumacher, D.; Chowdhury, E. "Using Particle-In-Cell simulations to model femtosecond pulse laser damage." (1 2014).
  • Austin, D.; Kafka, K.; Blaga, C.I.; Dimauro, L.F. et al. "Measurement of femtosecond laser damage thresholds at mid IR wavelengths." (1 2014).
  • Austin, D.; Kafka, K.; Blaga, C.I.; Dimauro, L.F. et al. "Measurement of femtosecond laser damage thresholds 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).
  • Kafka, K.; Austin, D.; Cheng, J.; Trendafilov, S. et al. "Laser Induced Periodic Surface Structure Formation in Germanium Above Laser Damage Fluence by Mid IR Femtosecond Laser Irradiation." in SPIE Laser Damage - 46th Annual Symposium on Optical Materials for High Power Lasers. (1 2014).
  • Austin, D.; Kafka, K.; Blaga, C.I.; Dimauro, L.F. et al. "Measurement of femtosecond laser damage thresholds at mid IR wavelengths." in SPIE Laser Damage - 46th Annual Symposium on Optical Materials for High Power Lasers. (1 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).
  • Kafka, K.; Austin, D.; Cheng, J.; Trendafilov, S. et al. "Laser induced periodic surface structure formation in germanium above laser damage fluence by mid IR femtosecond laser irradiation." (1 2014).

2013

  • Mitchell, R.A.; Schumacher, D.; Chowdhury, E. "Modeling femtosecond pulse laser damage on conductors using Particle-In-Cell simulations." (1 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).
  • 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).

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." (12 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.; 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

  • Pradhan, A.K.; Nahar, S.N.; Montenegro, M.; Chowdhury, E.A. et al. "Multi-Disciplinary Role of Atomic Astrophysics: From Stellar Interiors to Cancer Research Via Nanotechnology." in International Conference on Recent Advances in Spectroscopy - Theoretical, Astrophysical and Experimental Perspectives. (1 2010).
  • Pradhan, A.K.; Nahar, S.N.; Montenegro, M.; Chowdhury, E.A. et al. "Multi-Disciplinary Role of Atomic Astrophysics: From Stellar Interiors to Cancer Research Via Nanotechnology." (1 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).
  • Pradhan, A.K.; Nahar, S.N.; Montenegro, M.; Chowdhury, E.A. et al. "Multi-disciplinary role of atomic astrophysics: From stellar interiors to cancer research via nanotechnology." (1 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).
  • Link, A.; Chowdhury, E.A.; Morrison, J.T.; Ovchinnikov, V.M. et al. "Development of an in situ peak intensity measurement method for ultraintense single shot laser-plasma experiments at the Sandia Z petawatt facility." (11 2006).
  • Link, A.; Chowdhury, E.A.; Morrison, J.T.; Ovchinnikov, V.M. et al. "Development of an in situ peak intensity measurement method for ultraintense single shot laser-plasma experiments at the Sandia Z petawatt facility." in 16th Topical Conference on High-Temperature Plasma Diagnostics. (10 2006).
  • Link, A.; Chowdhury, E.A.; Morrison, J.T.; Ovchinnikov, V.M. et al. "Development of an in situ peak intensity measurement method for ultraintense single shot laser-plasma experiments at the Sandia Z petawatt facility." (10 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).