Dr. Alexander A. Puretzky Profile

Dr. Alexander A. Puretzky

R&D at Oak Ridge National Lab

SPIE Involvement:

Author

Publications (26)

Proceedings Article | 13 March 2024 Presentation

Presentation

Synthesis of 2D Janus and heterostructures by hyperthermal PLD implantation with in situ diagnostics

Kai Xiao, Sumner Harris, Yiling Yu, Yu-Chuan Lin, Austin Houston, Jordan Hachtel, Alexander Puretzky, Christopher Rouleau, Mina Yoon, Gerd Duscher, David Geohegan

Proceedings Volume PC12874, PC128740I (2024) https://doi.org/10.1117/12.3005378

KEYWORDS: Crystals, Quantum processing, Quantum conversion, Selenium, Raman spectroscopy, Materials science, Heterojunctions, 2D materials, Vibration, Spectroscopy

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Proceedings Article | 5 October 2023 Presentation

Presentation

Nanoscale measurement and manipulation of single-photon emitter photophysics

Benjamin Lawrie, Alex Puretzky, Weijun Luo, Xi Ling

Proceedings Volume PC12657, PC1265704 (2023) https://doi.org/10.1117/12.2677345

KEYWORDS: Quantum emitters, Gases, Solid state electronics, Quantum photonics, Quantum correlations, Photoluminescence, Excitons, Solids, Solar energy, Simulations

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Proceedings Article | 17 March 2023 Presentation

Presentation

Combining gas-phase, structural, and optical diagnostics for in situ feedback and control during pulsed laser deposition

Sumner Harris, Christopher Rouleau, Alexander Puretzky, Seok Joon Yun, Liangbo Liang, Ondrej Dyck, Tom Berlijn, Gyula Eres, Gerd Duscher, Austin Houston, Yu-Chuan Lin, Mina Yoon, Kai Xiao, David Geohegan

Proceedings Volume PC12410, PC1241006 (2023) https://doi.org/10.1117/12.2650571

KEYWORDS: Feedback control, Pulsed laser deposition, Optical diagnostics, Beam controllers, Diagnostics, Selenium, Raman spectroscopy, Materials science, Machine learning, Ions

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Proceedings Article | 10 May 2021 Open Access

Open Access

Paper

Position and field-dependent analysis of SNSPD waveforms (Conference Presentation), (Withdrawal Notice)

Claire Marvinney, Yun-Yi Pai, Brian Lerner, Matthew Feldman, Jie Zhang, Alexander Puretzky, Aaron Miller, Benjamin Lawrie

Proceedings Volume 11721, 117210H (2021) https://doi.org/10.1117/12.2585925

KEYWORDS: Nanowires, Diffractive optical elements, Quantum communications, Microscopes, Wave propagation, Superconductors, Single photon detectors, Single photon, Sensors, Scanning tunneling microscopy

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Proceedings Article | 8 March 2021 Presentation

Presentation

In situ characterization of the laser-induced synthesis and photonic properties of nanostructures in a TEM

Chenze Liu, Yu-Chuan Lin, Yiling Yu, Yueying Wu, Alexander Puretzky, Mina Yoon, Gyula Eres, Christopher Rouleau, Philip Rack, Kai Xiao, Gerd Duscher, David Geohegan

Proceedings Volume 11675, 116750D (2021) https://doi.org/10.1117/12.2578719

KEYWORDS: Transmission electron microscopy, Laser crystals, Crystals, Crystallography, Heterojunctions, Spectroscopy, Pulsed laser deposition, Particles, Optical simulations, Materials science

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Proceedings Article | 5 March 2021 Presentation

Presentation

In situ diagnostics of photoinduced processing and exciton diffusivity enhancement in two-dimensional semiconductors

Yiling Yu, Yifei Yu, Guoqing Li, Linyou Cao, Alexander Puretzky, Christopher Rouleau, David Geohegan

Proceedings Volume 11675, 116750E (2021) https://doi.org/10.1117/12.2578948

KEYWORDS: Crystals, Second-harmonic generation, Micro raman spectroscopy, Single photon, Magnetism, Excitons, Electron microscopy, Crystallography, Chemical vapor deposition

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Proceedings Article | 5 March 2021 Presentation + Paper

Presentation + Paper

In situ electron-beam processing and cathodoluminescence microscopy for quantum nanophotonics

Vasudevan Iyer, Scott Retterer, Jason Fowlkes, Stephen Jesse, Alexander Puretzky, Jordan Hachtel, Philip Rack, Benjamin Lawrie

Proceedings Volume 11675, 1167504 (2021) https://doi.org/10.1117/12.2578528

KEYWORDS: Nanophotonics, Microscopy, Plasmonics, Single photon, Nonlinear optics, Color centers, Structural design, Scanning electron microscopy, Quantum optics, Quantum information processing

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Proceedings Article | 7 September 2018 Presentation + Paper

Presentation + Paper

DNA methylation detection using UV nano bowtie antenna enhanced Raman spectroscopy

Ling Li, Shuang Fang Lim, Alexander Puretzky, Brandon J. Long, Robert Riehn, Hans Hallen

Proceedings Volume 10727, 107270B (2018) https://doi.org/10.1117/12.2321283

KEYWORDS: Raman spectroscopy, Absorption, Molecules, Antennas, Plasmons, Ultraviolet radiation, Plasmonics, Deep ultraviolet, Ultraviolet detectors, Crystals

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Proceedings Article | 21 April 2017 Presentation

Presentation

Correlating the optical properties of WS2 monolayers grown by CVD with isoelectronic Mo doping level (Conference Presentation)

Kai Wang, Nick Cross, Abdelaziz Boulesbaa, Pushpa Pudasaini, Mengkun Tian, Masoud Mahjouri-Samani, Mark Oxley, Christopher Rouleau, Alexander Puretzky, Philip Rack, Kai Xiao, Mina Yoon, Gyula Eres, Gerd Duscher, David Geohegan

Proceedings Volume 10093, 1009305 (2017) https://doi.org/10.1117/12.2256543

KEYWORDS: Molybdenum, Doping, Optical properties, Chemical vapor deposition, Chemical species, Luminescence, Crystals, Transition metals, Ultrafast imaging, Absorption

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Proceedings Article | 21 April 2017 Presentation

Presentation

Ultrafast charge and energy exchanges at hybrid interfaces involving 2D semiconductors (Conference Presentation)

Abdelaziz Boulesbaa, Kai Wang, Viktoriia Babicheva, Ivan Kravchenko, Ming-Wei Lin, Masoud Mahjouri-Samani, Mengkun Tian, Alexander Puretzky, Ilia Ivanov, Christopher Rouleau, Bobby Sumpter, David Geohegan

Proceedings Volume 10093, 1009308 (2017) https://doi.org/10.1117/12.2253659

KEYWORDS: Interfaces, Spectroscopy, Plasmons, Semiconductors, Heterojunctions, Aluminum, Excitons, Ultrafast phenomena, Optoelectronics, Femtosecond phenomena

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Proceedings Article | 21 April 2017 Presentation

Presentation

New approaches for synthesis and processing of 2D materials (Conference Presentation)

Masoud Mahjouri-Samani, Christopher Rouleau, Alexander Puretzky, Gyula Eres, Kai Xiao, Gerd Duscher, Mina Yoon, David Geohegan

Proceedings Volume 10093, 1009303 (2017) https://doi.org/10.1117/12.2253430

KEYWORDS: Laser processing, Nanoparticles, Semiconductors, Crystals, Metals, Chalcogenides, Electronics, Photonics, Semiconductor lasers, Tunable lasers

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Proceedings Article | 21 April 2017 Presentation

Presentation

Optical signatures of defects in low temperature Raman and photoluminescence spectra of 2D crystals (Conference Presentation)

Alexander Puretzky, Masoud Mahjouri-Samani, Xufan Li, Kai Xiao, Kai Wang, Juan Carlos Idrobo, Liangbo Liang, Bobby Sumpter, Mina Yoon, Vincent Meunier, David Geohegan

Proceedings Volume 10093, 1009307 (2017) https://doi.org/10.1117/12.2253363

KEYWORDS: Raman spectroscopy, Crystals, Crystallography, Luminescence, Transition metals, Optoelectronics, Flexible circuits, Environmental sensing, Gases, Optical properties

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Proceedings Article | 21 April 2017 Presentation

Presentation

Pulsed laser vaporization synthesis of boron loaded few layered graphene (Conference Presentation)

Wesley Tennyson, Mengkun Tian, Karren More, David Geohegan, Alexander Puretzky, Alexander Papandrew, Christopher Rouleau, Mina Yoon

Proceedings Volume 10093, 1009309 (2017) https://doi.org/10.1117/12.2252764

KEYWORDS: Materials science, Oxidation, Boron, Graphene, Carbon, Pulsed laser operation, Solids, Resistance, Laser ablation, Argon

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Proceedings Article | 7 March 2014 Paper

Paper

Catalytic nanoparticles for carbon nanotube growth synthesized by through thin film femtosecond laser ablation

C. Rouleau, M. Tian, A. Puretzky, M. Mahjouri-Samani, G. Duscher, D. Geohegan

Proceedings Volume 8969, 896907 (2014) https://doi.org/10.1117/12.2045951

KEYWORDS: Nanoparticles, Femtosecond phenomena, Particles, Carbon nanotubes, Thin films, Laser ablation, Metals, Platinum, Atmospheric particles, Chemical vapor deposition

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Proceedings Article | 7 March 2014 Paper

Paper

Exploring growth kinetics of carbon nanotube arrays by in situ optical diagnostics and modeling

A. Puretzky, D. Geohegan, S. Pannala, C. Rouleau

Proceedings Volume 8969, 896904 (2014) https://doi.org/10.1117/12.2045949

KEYWORDS: Nanoparticles, Carbon nanotubes, Carbon, Chemical vapor deposition, Single walled carbon nanotubes, Diffusion, Chemical species, Transmission electron microscopy, Molecules, Metals

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Proceedings Article | 17 October 2003 Paper

Paper

Synthesis of multifunctional single-wall carbon nanotube-amorphous diamond thin film composites

David Geohegan, C. Schittenhelm, Alexander Puretzky, M. Lance, Gerald Jellison, Philip Britt

Proceedings Volume 4977, (2003) https://doi.org/10.1117/12.483866

KEYWORDS: Single walled carbon nanotubes, Resistance, Diamond, Composites, Thin films, Carbon, Coating, Ions, Raman spectroscopy, Pulsed laser deposition

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Proceedings Article | 17 October 2003 Paper

Paper

In situ optical absorption spectroscopy, incandencence, and light scattering characterization of single-wall carbon nanotube synthesis by the laser vaporization technique

Alexander Puretzky, David Geohegan, C. Schittenhelm

Proceedings Volume 4977, (2003) https://doi.org/10.1117/12.483865

KEYWORDS: Single walled carbon nanotubes, Particles, Carbon, Temperature metrology, Laser ablation, Nanoparticles, Absorption, Quartz, Light scattering, Absorption spectroscopy

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Proceedings Article | 9 August 2002 Paper

Paper

Laser synthesis of single-wall carbon nanotubes with time-resolved in situ diagnostics

David Geohegan, Alexander Puretzky, Henrik Schittenhelm, Xudong Fan, Philip Britt, Michael Guillorn, Michael Simpson, Vladimir Merkulov, Derek Austin, Stephen Pennycook, David Joy

Proceedings Volume 4762, (2002) https://doi.org/10.1117/12.478646

KEYWORDS: Single walled carbon nanotubes, Nanoparticles, Carbon, Carbon nanotubes, Diagnostics, Spectroscopy, Metals, Plasma, Annealing, Imaging spectroscopy

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Proceedings Article | 18 March 2002 Paper

Paper

Laser synthesis of single-wall carbon nanotubes with time-resolved in-situ diagnostics

David Geohegan, Alexander Puretzky, Henrik Schittenhelm, Xudong Fan, Philip Britt, Michael Guillorn, Michael Simpson, Vladimir Merkulov, Derek Austin, Stephen Pennycook, David Joy

Proceedings Volume 4636, (2002) https://doi.org/10.1117/12.459725

KEYWORDS: Single walled carbon nanotubes, Nanoparticles, Carbon, Carbon nanotubes, Spectroscopy, Metals, Diagnostics, Annealing, Imaging spectroscopy, Plasma

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Proceedings Article | 12 April 2001 Paper

Paper

Time-resolved diagnostics and mechanisms of single-wall carbon nanotube synthesis by the laser vaporization technique

David Geohegan, Alexander Puretzky, Xudong Fan, Stephen Pennycook, Michael Guillorn, Michael Simpson, Vladimir Merkulov, Derek Austin, David Joy

Proceedings Volume 4347, (2001) https://doi.org/10.1117/12.425010

KEYWORDS: Single walled carbon nanotubes, Carbon, Imaging spectroscopy, Nanoparticles, Spectroscopy, Laser ablation, Plasmas, Carbon nanotubes, Cobalt, Diagnostics

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Proceedings Article | 23 March 2000 Paper

Paper

In-situ plasma diagnostic investigations of single-wall carbon nanotube synthesis by laser ablation of C-Ni-Co targets

David Geohegan, Alexander Puretzky, Xudong Fan, Michael Guillorn, Michael Simpson, Vladimir Merkulov, Stephen Pennycook

Proceedings Volume 3935, (2000) https://doi.org/10.1117/12.380791

KEYWORDS: Single walled carbon nanotubes, Carbon, Imaging spectroscopy, Laser ablation, Nanoparticles, Spectroscopy, Plasma, Astatine, Carbon nanotubes, Cobalt

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Proceedings Article | 23 March 2000 Paper

Paper

Aspects of nanoparticle formation during pulsed laser ablation

Richard Wood, Jean-Noel LeBoeuf, David Geohegan, Alexander Puretzky, Kuan-Ren Chen

Proceedings Volume 3935, (2000) https://doi.org/10.1117/12.380807

KEYWORDS: Nanoparticles, Laser ablation, Diffusion, Particles, Silicon, Argon, Chemical species, Scattering, Silver, Laser induced fluorescence

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Proceedings Article | 23 March 2000 Paper

Paper

Computer modeling of the interaction of a laser-ablated plume with an ambient background gas

Jean-Noel LeBoeuf, Richard Wood, Kuan-Ren Chen, David Geohegan, Alexander Puretzky

Proceedings Volume 3935, (2000) https://doi.org/10.1117/12.380794

KEYWORDS: Multiple scattering, Silicon, Monte Carlo methods, Computer simulations, Laser ablation, Ions, Argon, Helium, Gases, Scattering

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Proceedings Article | 25 February 2000 Paper

Paper

Dynamics of the vapor plumes produced by the MALDI technique

Boris Luk'yanchuk, N. Kirichenko, Alexander Puretzky, David Geohegan

Proceedings Volume 4070, (2000) https://doi.org/10.1117/12.378152

KEYWORDS: Proteins, Molecules, Data modeling, Laser ablation, Particles, Pulsed laser operation, Crystals, Solids, Molecular lasers, 3D modeling

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Proceedings Article | 15 July 1999 Paper

Paper

Pulsed-laser-deposited amorphous diamond and related materials: synthesis, characterization, and field emission properties

Vladimir Merkulov, Douglas Lowndes, Larry Baylor, Gerald Jellison, Alexander Puretzky, David Geohegan

Proceedings Volume 3618, (1999) https://doi.org/10.1117/12.352708

KEYWORDS: Ions, Carbon, Diamond, Plasmons, Charged particle optics, Silicon, Fusion energy, Ellipsometry, Atomic force microscopy, Pulsed laser deposition

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Proceedings Article | 10 April 1995 Paper

Paper

Laser-ablation-plume thermalization dynamics in background gases studied by time-resolved imaging, spectroscopic, and ion probe diagnostics

David Geohegan, Alexander Puretzky

Proceedings Volume 2403, (1995) https://doi.org/10.1117/12.206256

KEYWORDS: Ions, Argon, Yttrium, Gases, Luminescence, Absorption, Plasma, Photography, Scattering, Laser ablation

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Showing 5 of 26 publications

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