Dr. Nathaniel D. Urban Profile

Dr. Nathaniel D. Urban

Scientist at Univ of Rochester

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 24 November 2023 Poster

High laser damage threshold polymer coatings for planarization and index-matching of freeform polarization-smoothing optics

Nathaniel Urban, Jenny Zhao, Marek Stehlik, John Marozas, Kenneth Marshall, Alexander Song, Dylan Rykert, Stavros Demos

Proceedings Volume PC12726, PC1272618 (2023) https://doi.org/10.1117/12.2684424

KEYWORDS: Laser damage threshold, Index matching antireflective coatings, Freeform optics, Coating, Polarization, Hard coatings, Crystals, Wavefronts, Ultraviolet radiation, Potassium

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Proceedings Article | 24 November 2023 Poster

Laser damage to photo and rubbed liquid crystal alignment materials

Zoey Davidson, Jason Wallace, Yasaman Sargol Zaei Aval, Nathaniel Urban, Stavros Demos, Kenneth Marshall, Selim Elhadj

Proceedings Volume PC12726, PC127260W (2023) https://doi.org/10.1117/12.2685244

KEYWORDS: Liquid crystals, Polarization, Laser induced damage, Laser damage threshold, Polyimides, Laser processing, 3D printing, Printing, Laser crystals, Design and modelling

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Proceedings Article | 17 March 2023 Presentation

Fabrication of polarization-smoothing optics for direct drive inertial confinement fusion based on novel liquid crystal devices and surface-figured potassium dihydrogen phosphate

Nathaniel Urban, Kenneth Marshall, Amy Rigatti, John Marozas, Kyle R. Kafka, Gary Mitchell, Marcela Ramirez Mireles, Jason Wallace, Ji-Mi Jang, Stavros Demos

Proceedings Volume PC12401, PC1240105 (2023) https://doi.org/10.1117/12.2651187

KEYWORDS: Potassium, Polarization, LCDs, Liquid crystals, Wave plates, Water, Speckle pattern, Spatial frequencies, Silica, Polishing

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Proceedings Article | 3 December 2022 Presentation

Laser damage performance of fused silica and potassium dihydrogen phosphate surfaces finished by fluid jet polishing

Nathaniel Urban, Kyle R. Kafka, Ji-Mi Jang, Kenneth Marshall, Rhys Emms, David Walker, Stavros Demos

Proceedings Volume PC12300, PC1230008 (2022) https://doi.org/10.1117/12.2642292

KEYWORDS: Silica, Laser induced damage, Polishing, Surface finishing, Potassium, Ultraviolet radiation, Laser damage threshold, Subaperture finishing, Resistance, Laser systems engineering

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Proceedings Article | 3 December 2022 Poster + Presentation

Optimized liquid crystals for high-power laser beam manipulation: an evaluation and feasibility study

Yasaman Sargol, Jason Wallace, Zoey Davidson, Nathaniel Urban, Stavros Demos, Keneth Marshall, Selim Elhadj

Proceedings Volume PC12300, PC123000V (2022) https://doi.org/10.1117/12.2641641

KEYWORDS: Liquid crystals, High power lasers, Laser damage threshold, Pulsed laser operation, Molecules, Molecular lasers, Crystal optics, 3D modeling, Transparency, Thermal modeling

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Proceedings Article | 3 December 2022 Poster + Presentation

Laser damage to liquid crystal alignment materials in ordinary and extraordinary modes

Zoey Davidson, Jason Wallace, Yasaman Sargol, Nathaniel Urban, Stavros Demos, Kenneth Marshall, Selim Elhadj

Proceedings Volume PC12300, PC123000Z (2022) https://doi.org/10.1117/12.2649329

KEYWORDS: Liquid crystals, Laser induced damage, Laser damage threshold, Polarization, Fusion energy, 3D printing, Printing, Laser processing, Defense systems, Data fusion

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SPIE Journal Paper | 19 May 2022

Laser-induced damage characteristics of fused silica surfaces polished to different depths using fluid jet polishing

Nathaniel Urban, Kyle R. Kafka, Kenneth Marshall, Stavros Demos

OE, Vol. 61, Issue 07, 071604, (May 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.7.071604

KEYWORDS: Surface finishing, Polishing, Laser induced damage, Silica, Resistance, Ultraviolet radiation, Contamination, Laser damage threshold, Abrasives, Optical engineering

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Proceedings Article | 12 October 2021 Poster

Large area, multi-pulse laser lifetime of purified nematic liquid crystals at near infrared wavelengths

Selim Elhadj, Craig Garvin, Andy Bayramian, William Clauson, Matthew Murachver, Jeff Jarboe, Drew Kissinger, Cote LeBlanc, Nathaniel Urban, Jason Wallace, Stavros Demos, Kenneth Marshall

Proceedings Volume 11910, 119101F (2021) https://doi.org/10.1117/12.2599826

Proceedings Article | 12 October 2021 Presentation

The effect of incident polarization handedness and ellipticity on the laser damage resistance of oriented liquid crystals in the nanosecond regime

Kenneth Marshall, Kyle Kafka, Nathaniel Urban, Jason Wallace, Stavros Demos

Proceedings Volume 11910, 119100T (2021) https://doi.org/10.1117/12.2598690

KEYWORDS: Liquid crystals, Polarization, Laser induced damage, Resistance, Laser damage threshold, Near ultraviolet, Mirrors, Circular polarizers

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Showing 5 of 9 publications

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