Mr. Alexei A. Kozlov Profile

Alexei A. Kozlov

Research Engineer at Univ of Rochester

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 18 December 2024 Presentation

Exploring enhancements of the multipulse, laser-induced damage resistance of methacrylate polymer coatings in the ultraviolet regime

Nathaniel Urban, Marek Stehlik, Alexei Kozlov, Marcela Mireles Ramirez, Jenny Zhao, Brittany Hoffman, Kenneth Marshall, Stavros Demos

Proceedings Volume PC13190, PC131900E (2024) https://doi.org/10.1117/12.3032777

KEYWORDS: Polymers, Ultraviolet radiation, Laser damage threshold, Resistance, Optical coatings, Laser induced damage, Silica, Polymer thin films, Laser glasses, Film thickness

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Proceedings Article | 18 December 2024 Presentation

Investigation of damage initiation and damage growth of dielectric mirrors under 351-nm, nanosecond laser pulses

Marek Stehlik, Alexei Kozlov, Kyle Kafka, Brittany Hoffman, Sara MacNally, Amy Rigatti, Stavros Demos

Proceedings Volume PC13190, PC1319003 (2024) https://doi.org/10.1117/12.3032761

KEYWORDS: Nanosecond lasers, Laser optics, Dielectrics, Dielectric mirrors, Coating, Ultraviolet radiation, UV optics, Optical limiting, Optical design, Optical components

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Proceedings Article | 18 December 2024 Presentation

Fused silica metasurface damage performance as a function of pulse duration

Kyle Kafka, Alexei Kozlov, Marek Stehlik, Stavros Demos

Proceedings Volume PC13190, PC131900F (2024) https://doi.org/10.1117/12.3033001

KEYWORDS: Silica, Picosecond phenomena, Antireflective coatings, Optical surfaces, Laser nanostructuring, Laser damage threshold, Laser applications, Femtosecond pulse shaping, Surface properties, Scanning electron microscopy

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Proceedings Article | 24 November 2023 Presentation

Investigation of the impact of defects in etched fused silica on laser damage to improve the performance of pulse-compression gratings

Russell Dent, Hu Huang, Alexei Kozlov, Amy Rigatti, Alexander Shestopalov, Stavros Demos

Proceedings Volume PC12726, PC127260I (2023) https://doi.org/10.1117/12.2686229

KEYWORDS: Silica, Optical gratings, Design and modelling, Laser induced damage, Laser damage threshold, Pulsed laser operation, Fabrication, Etching, Tolerancing, Thin films

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Proceedings Article | 24 November 2023 Presentation

Monolayer organic thin films as particle-contamination–resistant coatings

Ruobin Jia, Brittany Hoffman, Alexei Kozlov, Stavros Demos, Alexander Shestopalov

Proceedings Volume PC12726, PC127260G (2023) https://doi.org/10.1117/12.2686053

KEYWORDS: Thin film coatings, Monolayers, Optical coatings, Thin films, Particles, Interfaces, Modulation, Contamination, Vacuum, Surface properties

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Proceedings Article | 3 December 2022 Poster + Presentation

Striated composite layers for high-fluence applications

Alexei Kozlov, James Oliver, John Spaulding, Christopher Smith, Sara MacNally, David Coates, Kyle R. Kafka, Amy Rigatti, Stavros Demos

Proceedings Volume PC12300, PC1230014 (2022) https://doi.org/10.1117/12.2642334

KEYWORDS: Composites, Thin films, Laser damage threshold, Silica, Refractive index, Oxygen, Hafnium, Deposition processes, Coating

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Proceedings Article | 12 October 2021 Presentation

Embedded contamination induced by etching in E-beam deposited silica: A possible precursor to laser damage

Russell Dent, Brittany Hoffman, Alexei Kozlov, Nan Liu, Amy Rigatti, Stavros Demos, Alexander Shesopalov

Proceedings Volume 11910, 1191014 (2021) https://doi.org/10.1117/12.2597975

KEYWORDS: Contamination, Reactive ion etching, Etching, Laser damage threshold, Chemical analysis, Systems modeling, Silica, Scanning electron microscopy, Polymers, Optical fabrication

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Proceedings Article | 12 October 2021 Poster + Presentation

Monolayer organic thin films as contamination resistant coatings in optical elements

Ruobin Jia, Brittany Hoffman, Alexei Kozlov, Stavros Demos, Alexander Shestopalov

Proceedings Volume 11910, 119101N (2021) https://doi.org/10.1117/12.2605048

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SPIE Journal Paper | 4 January 2021

Long-term monitoring the damage performance of multilayer dielectric grating samples residing inside the compressor chamber of the OMEGA EP laser

Alexei Kozlov, Stavros Demos, David Canning, Brian Kruschwitz, Leon Waxer, Brittany Hoffman, Amy Rigatti, Nickolaos Savidis

OE, Vol. 60, Issue 03, 031008, (January 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.3.031008

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SPIE Journal Paper | 21 November 2020 Open Access

Round-robin measurements of the laser-induced damage threshold with sub-picosecond pulses on optical single layers

Laurent Lamaignère, Alexandre Ollé, Marine Chorel, Nadja Roquin, Alexei Kozlov, Brittany Hoffman, James Oliver, Stavros Demos, Laurent Gallais, Raluca Negres, Andrius Melninkaitis

OE, Vol. 60, Issue 03, 031005, (November 2020) https://doi.org/10.1117/12.10.1117/1.OE.60.3.031005

KEYWORDS: Laser damage threshold, Hybrid fiber optics, Laser induced damage, Refractive index, Dielectrics, Optical engineering, Sensors, Environmental sensing, Diagnostics, Beam propagation method

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Proceedings Article | 18 September 2020 Open Access

Investigation of excitation dynamics in HfO2 and SiO2 monolayers using subpicosecond pump-and-probe damage testing (Withdrawal Notice)

Kyle R. Kafka, Brittany Hoffman, Alexei Kozlov, Stavros Demos

Proceedings Volume 11514, 1151411 (2020) https://doi.org/10.1117/12.2571240

KEYWORDS: Silica, Pulsed laser operation, Picosecond phenomena, Laser damage threshold, Laser ablation, Laser induced damage, Resistance, Electrons, Laser energy, Oxides

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Proceedings Article | 3 December 2019 Presentation

Round-robin measurements of optical coatings laser-induced–damage threshold in the subpicosecond range (Conference Presentation)

Laurent Lamaignère, Alexandre Ollé, Marine Chorel, Nadja Roquin, Alexeï Kozlov, Brittany Hoffman, Stavros Demos, Laurent Gallais, Andrius Melninkaitis

Proceedings Volume 11173, 1117319 (2019) https://doi.org/10.1117/12.2536678

KEYWORDS: Laser damage threshold, Optical coatings, Optical testing, Laser optics, Standards development, Control systems, Optical components, High power lasers, Polarization, Environmental sensing

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Proceedings Article | 20 December 2017 Paper

Damage testing of nematic liquid crystalline materials for femtosecond to nanosecond pulse lengths at 1053 nm

T. Kosc, K. Marshall, A. Kozlov, S. Papernov, S. Demos

Proceedings Volume 10447, 104471G (2017) https://doi.org/10.1117/12.2281406

KEYWORDS: Liquid crystals, Laser damage threshold, Liquids, Femtosecond phenomena, Laser induced damage

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Proceedings Article | 13 January 2017 Paper

Study of the picosecond laser damage in HfO2/SiO20based thin-film coatings in vacuum

A. Kozlov, S. Papernov, J. Oliver, A. Rigatti, B. Taylor, B. Charles, C. Smith

Proceedings Volume 10014, 100141Y (2017) https://doi.org/10.1117/12.2242832

KEYWORDS: Thin film coatings, Laser damage threshold, Picosecond phenomena, Thin films, Multilayers, Hybrid fiber optics, Pulsed laser operation, Quantum wells, Scanning electron microscopy, Optical coatings

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SPIE Journal Paper | 15 July 2016

Role of HfO₂/SiO₂ thin-film interfaces in near-ultraviolet absorption and pulsed laser damage

Semyon Papernov, Alexei Kozlov, James Oliver, Chris Smith, Lars Jensen, Stefan Günster, Heinrich Mädebach, Detlev Ristau

OE, Vol. 56, Issue 01, 011004, (July 2016) https://doi.org/10.1117/12.10.1117/1.OE.56.1.011004

KEYWORDS: Hybrid fiber optics, Absorption, Interfaces, Near ultraviolet, Thin films, Laser induced damage, Laser damage threshold, Thin film coatings, Resistance, Ion beams

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Proceedings Article | 23 November 2015 Paper

The role of film interfaces in near-ultraviolet absorption and pulsed-laser damage in ion-beam-sputtered coatings based on HfO2/SiO2 thin-film pairs

S. Papernov, A. Kozlov, J. Oliver, C. Smith, L. Jensen, D. Ristau, S. Günster, H. Mädebach

Proceedings Volume 9632, 96320B (2015) https://doi.org/10.1117/12.2196654

KEYWORDS: Absorption, Interfaces, Silica, Near ultraviolet, Laser damage threshold, Thin film coatings, Thin films, Laser induced damage, Resistance, Hybrid fiber optics

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Proceedings Article | 31 October 2014 Paper

Interface absorption versus film absorption in HfO2/SiO2 thin-film pairs in the near-ultraviolet and relation to pulsed-laser damage

S. Papernov, A. Kozlov, J. Oliver

Proceedings Volume 9237, 92370Q (2014) https://doi.org/10.1117/12.2068241

KEYWORDS: Absorption, Silica, Coating, Interfaces, Thin films, Near ultraviolet, Oxides, Multilayers, Atomic force microscopy, Laser damage threshold

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SPIE Journal Paper | 25 June 2014 Open Access

Near-ultraviolet absorption annealing in hafnium oxide thin films subjected to continuous-wave laser radiation

Semyon Papernov, Alexei Kozlov, James Oliver, Terrance Kessler, Alexander Shvydky, Brendan Marozas

OE, Vol. 53, Issue 12, 122504, (June 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.12.122504

KEYWORDS: Absorption, Continuous wave operation, Hybrid fiber optics, Annealing, Near ultraviolet, Thin films, Pulsed laser operation, Hafnium, Oxides, Semiconductor lasers

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Proceedings Article | 19 November 2013 Paper

Near-ultraviolet absorption-annealing effects in HfO2 thin films subjected to continuous-wave laser irradiation at 355 nm

S. Papernov, A. Kozlov, J. Oliver, T. Kessler, B. Marozas

Proceedings Volume 8885, 888504 (2013) https://doi.org/10.1117/12.2031640

KEYWORDS: Absorption, Continuous wave operation, Near ultraviolet, Annealing, Pulsed laser operation, Thin films, Laser irradiation, Semiconductor lasers, Laser damage threshold, Multilayers

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Proceedings Article | 21 September 2007 Paper

Vapor-phase-deposited organosilane coatings as hardening agents for high-peak-power laser optics

K. Marshall, Z. Culakova, B. Ashe, C. Giacofei, A. Rigatti, T. Kessler, A. Schmid, J. Oliver, A. Kozlov

Proceedings Volume 6674, 667407 (2007) https://doi.org/10.1117/12.734723

KEYWORDS: Laser damage threshold, Head-mounted displays, Silicon, Diffraction gratings, Natural surfaces, Resistance, Water, Laser systems engineering, Glasses, Optical coatings

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Proceedings Article | 15 January 2007 Paper

Evaluation of cleaning methods for multilayer diffraction gratings

B. Ashe, K. Marshall, C. Giacofei, A. Rigatti, T. Kessler, A. Schmid, J. Oliver, J. Keck, A. Kozlov

Proceedings Volume 6403, 64030O (2007) https://doi.org/10.1117/12.694884

KEYWORDS: Diffraction gratings, Ions, Diffraction, Silicon, Laser damage threshold, Scanning electron microscopy, Contamination, Photoresist materials, Silicon carbide, Laser systems engineering

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Proceedings Article | 7 February 2006 Paper

Thin-film design for multilayer diffraction gratings

J.B. Oliver, T.J. Kessler, H. Huang, J. Keck, A.L. Rigatti, A.W. Schmid, A. Kozlov, T.Z. Kosc

Proceedings Volume 5991, 59911A (2006) https://doi.org/10.1117/12.638818

KEYWORDS: Coating, Diffraction gratings, Photoresist materials, Reflectivity, Multilayers, Optical design, Etching, Holography, Thin films, Laser damage threshold

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Proceedings Article | 7 February 2006 Paper

Manufacture and development of multilayer diffraction gratings

J. Keck, J.B. Oliver, T.J. Kessler, H. Huang, J. Barone, J. Hettrick, A.L. Rigatti, T. Hoover, K.L. Marshall, A.W. Schmid, A. Kozlov, T.Z. Kosc

Proceedings Volume 5991, 59911G (2006) https://doi.org/10.1117/12.638819

KEYWORDS: Diffraction gratings, Etching, Photoresist materials, Polymers, Holography, Coating, Laser damage threshold, Multilayers, Fusion energy, Oxygen

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Proceedings Article | 7 February 2006 Paper

Thin-film polarizers for the OMEGA EP laser system

J.B. Oliver, A.L. Rigatti, J.D. Howe, J. Keck, J. Szczepanski, A.W. Schmid, S. Papernov, A. Kozlov, T.Z. Kosc

Proceedings Volume 5991, 599119 (2006) https://doi.org/10.1117/12.638809

KEYWORDS: Coating, Polarizers, Silica, Crystals, Thin films, Laser systems engineering, Transmittance, National Ignition Facility, Pulsed laser operation, Laser damage threshold

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Showing 5 of 24 publications

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