Dr. George Nemes Profile

Dr. George Nemes

President at ASTiGMAT

SPIE Involvement:

Author

Area of Expertise:

Laser Beam Characterization , Polarization Control , Matrix Optics , Controlling Astigmatism , Phase-Space Optics , Optical System Design

Websites:

Company Website

Expertise in unconventional optics, laser beam characterization and propagation, matrix optics, and polarization control. Inventor of Phase-Space Beam Analizer(TM) VariSpot(R), VariFoc(TM) and VariPol(TM) unconventional optical systems, all manufactured by ASTiGMAT. Developed new methods/systems to measure M^2, and introduced two new beam invariants, generalizing the M^2: the intrinsic astigmatism, a, and the effective M^4, now included in ISO 11146-1,2,3 standards. Founder and President of ASTiGMAT, a consulting, R&D, and OEM company. Developer of laser and optics-related ISO standards.

Proceedings Article | 23 November 2015 Paper

Analysis of cumulative versus ISO-recommended calculation of damage probability using a database of real S-on-1 tests

Alexandru Zorila, Aurel Stratan, Ioana Dumitrache, Laurentiu Rusen, George Nemes

Proceedings Volume 9632, 96321H (2015) https://doi.org/10.1117/12.2194303

KEYWORDS: Laser energy, Probability theory, Standards development, Databases, Laser induced damage, Laser damage threshold, Error analysis, Laser development, Q switched lasers, Optics manufacturing, Manufacturing, Pulsed laser operation, Neodymium, Plasma physics, Plasma, Physics, High power lasers

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SPIE Journal Paper | 8 October 2014

Measuring effective area of spots from pulsed laser beams

Aurel Stratan, Alexandru Zorila, Laurentiu Rusen, George Nemes

OE, Vol. 53, Issue 12, 122513, (October 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.12.122513

KEYWORDS: Signal to noise ratio, Cameras, CCD cameras, Pulsed laser operation, Standards development, Beam analyzers, CCD image sensors, Charge-coupled devices, Optical engineering, Computer simulations

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SPIE Journal Paper | 31 May 2013

Measuring the effective pulse duration of nanosecond and femtosecond laser pulses for laser-induced damage experiments

Alexandru Zorila, Laurentiu Rusen, Aurel Stratan, George Nemes

OE, Vol. 52, Issue 05, 054203, (May 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.5.054203

KEYWORDS: Pulsed laser operation, Femtosecond phenomena, Photodiodes, Oscilloscopes, Laser induced damage, Standards development, Optical engineering, Laser damage threshold, Error analysis, Ultrafast phenomena

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Proceedings Article | 4 December 2012 Paper

Automated test station for laser-induced damage threshold measurements according to ISO 21254-1,2,3,4 standards

Aurel Stratan, Alexandru Zorila, Laurentiu Rusen, Sandel Simion, Constantin Blanaru, Constantin Fenic, Liviu Neagu, George Nemes

Proceedings Volume 8530, 85301Y (2012) https://doi.org/10.1117/12.976845

KEYWORDS: Silica, Laser induced damage, Laser damage threshold, Standards development, Pulsed laser operation, Camera shutters, Sensors, Signal processing, Dielectrics, Error analysis

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Proceedings Article | 29 April 2008 Paper

New optics for industrial laser applications: VariSpot and VariFoc

Julio Serna, George Nemeş

Proceedings Volume 7007, 700704 (2008) https://doi.org/10.1117/12.801927

KEYWORDS: Laser applications, Zoom lenses, Laser optics, Monochromatic aberrations, Collimation, LASIK, Laser vision correction, Semiconductor lasers, Diodes, Biomedical optics

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Proceedings Article | 25 April 2007 Paper

Damage tests for 355 nm laser mirror by using a new variable spot size optical system (VariSpot)

Constantin Fenic, Liviu Neagu, Cristian Viespe, Gheorghe Honciuc, George Nemeş

Proceedings Volume 6606, 66060C (2007) https://doi.org/10.1117/12.729517

KEYWORDS: Mirrors, Attenuators, Pulsed laser operation, Laser damage threshold, Neodymium, Reflectivity, Zoom lenses, Laser induced damage, Nd:YAG lasers, Diagnostics

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Proceedings Article | 12 September 2006 Paper

Optical system for variable resizing of round flat-top distributions

George Nemeş, John Hoffnagle

Proceedings Volume 6290, 629008 (2006) https://doi.org/10.1117/12.682815

KEYWORDS: Gaussian beams, Spherical lenses, Collimation, Zoom lenses, Optical components, Beam shaping, Cylindrical lenses, Lenses, CCD cameras, Charge-coupled devices

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Proceedings Article | 15 February 2006 Paper

Correlation between geometrical and intrinsic classification of general astigmatic laser beams

George Nemes

Proceedings Volume 6101, 610118 (2006) https://doi.org/10.1117/12.640294

KEYWORDS: Matrices, Global system for mobile communications, Beam propagation method, Standards development, Monochromatic aberrations, Laser beam propagation, Mathematical modeling, Laser beam characterization, Optical testing, Geometrical optics

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Proceedings Article | 30 May 2003 Paper

Intrinsic and geometrical beam classification, and the beam identification after measurement

George Nemes

Proceedings Volume 4932, (2003) https://doi.org/10.1117/12.472380

KEYWORDS: Monochromatic aberrations, Optical testing, Transmission electron microscopy, Matrices, Beam propagation method, Standards development, Free space, Laser beam propagation, Free space optics, Picosecond phenomena

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Proceedings Article | 30 May 2003 Paper

Phase space analyzer with Gaussian slits

Julio Serna, George Nemes

Proceedings Volume 4932, (2003) https://doi.org/10.1117/12.472381

KEYWORDS: Global system for mobile communications, Beam propagation method, Lenses, Sensors, Beam analyzers, Optical components, Image sensors, Geometrical optics, Monochromatic aberrations, Standards development

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Proceedings Article | 19 July 1999 Paper

Pseudo-symmetric beams: generation, propagation properties, and measurements

George Nemes, Julio Serna, Bernd Eppich, Chunyu Gao, Horst Weber

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.355032

KEYWORDS: Picosecond phenomena, Free space, Matrices, Beam propagation method, Spherical lenses, Cylindrical lenses, Free space optics, Monochromatic aberrations, Laser therapeutics

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Showing 5 of 11 publications

Conference Committee Involvement (2)

8th International Workshop on Laser Beam and Optics Characterization

22 January 2006 | San Jose, California, United States

7th International Workshop on Laser Beam and Optics Characterization

18 September 2002 | Boulder, CO, United States

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