Dr. Dinesh Patel Profile

Dr. Dinesh Patel

at Colorado State Univ

SPIE Involvement:

Author

Publications (36)

SPIE Journal Paper | 12 October 2016

Comparison of defects responsible for nanosecond laser-induced damage and ablation in common high index optical coatings

Yejia Xu, Mohammed Abdulameer, Luke Emmert, Travis Day, Dinesh Patel, Carmen Menoni, Wolfgang Rudolph

OE, Vol. 56, Issue 01, 011019, (October 2016) https://doi.org/10.1117/12.10.1117/1.OE.56.1.011019

KEYWORDS: Laser optics, Laser induced damage, Optical coatings, Laser ablation, Hybrid fiber optics, Laser damage threshold, Absorption, Tantalum, Optical engineering, Microscopes

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Proceedings Article | 23 November 2015 Paper

Optical coatings excited by femtosecond lasers near the damage threshold: challenges and opportunities

Luke Emmert, Cristina Rodriguez, Zhanliang Sun, Farzin Beygi Azar Aghbolagh, Stefan Günster, Detlev Ristau, Dinesh Patel, Carmen Menoni, Wolfgang Rudolph

Proceedings Volume 9632, 96320K (2015) https://doi.org/10.1117/12.2196553

KEYWORDS: Optical coatings, Femtosecond phenomena, Laser induced damage, Dielectrics, Third-harmonic generation, Dielectric filters, Laser damage threshold, Ultrafast phenomena, Mirrors, Polarizers, Coating, Absorption, Pulsed laser operation, Picosecond phenomena

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Proceedings Article | 23 November 2015 Paper

Comparative STEREO-LID (Spatio-TEmporally REsolved Optical Laser-Induced Damage) studies of critical defect distributions in IBS, ALD, and electron-beam coated dielectric films

Yejia Xu, Amir Khabbazi, Travis Day, Andrew Brown, Luke Emmert, Joseph Talghader, Ella Field, Damon Kletecka, John Bellum, Dinesh Patel, Carmen Menoni, Wolfgang Rudolph

Proceedings Volume 9632, 963215 (2015) https://doi.org/10.1117/12.2196548

KEYWORDS: Laser induced damage, Laser optics, Optical coatings, Probability theory, Atomic layer deposition, Dielectrics, Laser damage threshold, Coating, Ion beams, Sputter deposition, Deposition processes, Electron beams

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Proceedings Article | 23 September 2015 Paper

Depth determination of critical fluence-limiting defects within planarized and non-planarized mirror coatings

Christopher Stolz, Justin Wolfe, Paul Mirkarimi, James Folta, John Adams, Marlon Menor, Rajesh Raman, Norm Neilsen, Mary Norton, Ronald Luthi, Nick Teslich, Carmen Menoni, Dinesh Patel

Proceedings Volume 9627, 96271C (2015) https://doi.org/10.1117/12.2197349

KEYWORDS: Silica, Mirrors, Laser induced damage, Thin film coatings, Etching, Optical coatings, Resistance, Multilayers, Scanning electron microscopy, Thin films

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Proceedings Article | 2 December 2014 Paper

Modification of multilayer mirror top-layer design for increased laser damage resistance

D. Schiltz, D. Patel, L. Emmert, C. Baumgarten, B. Reagan, W. Rudolph, J. Rocca, C. Menoni

Proceedings Volume 9237, 92371G (2014) https://doi.org/10.1117/12.2068244

KEYWORDS: Coating, Silica, Laser induced damage, Multilayers, Absorption, Resistance, Laser damage threshold, Reflectors, Mirrors, Interfaces

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Proceedings Article | 7 March 2014 Paper

Periodic nanostructures fabricated by Talbot extreme ultraviolet lithography

W. Li, D. Patel, C. Menoni, A. Stein, W. Chao, E. Anderson, M. Marconi

Proceedings Volume 8973, 89730D (2014) https://doi.org/10.1117/12.2041688

KEYWORDS: Photomasks, Lithography, Nanostructures, Nanolithography, Extreme ultraviolet lithography, Extreme ultraviolet, Imaging systems, Nanoimprint lithography, Photoresist materials, X-ray optics

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Proceedings Article | 3 December 2013 Paper

Defect insensitive 100 J/cm2 multilayer mirror coating process

Christopher Stolz, Justin Wolfe, Paul Mirkarimi, James Folta, John Adams, Marlon Menor, Nick Teslich, Regina Soufli, Carmen Menoni, Dinesh Patel

Proceedings Volume 8885, 888502 (2013) https://doi.org/10.1117/12.2030477

KEYWORDS: Etching, Silica, Multilayers, Coating, Mirrors, Resistance, Laser induced damage, Ion beams, Visualization, Sputter deposition

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Proceedings Article | 19 November 2013 Paper

Improvements in the laser damage behavior of Ta2O5/SiO2 interference coatings by modification of the top layer design

D. Patel, D. Schiltz, P. Langton, L. Emmert, L. Acquaroli, C. Baumgarten, B. Reagan, J. Rocca, W. Rudolph, A. Markosyan, R. Route, M. Fejer, C. Menoni

Proceedings Volume 8885, 888522 (2013) https://doi.org/10.1117/12.2030380

KEYWORDS: Laser induced damage, Reflectors, Silica, Scattering, Multilayers, Picosecond phenomena, Absorption, Surface roughness, Ion beams, Sputter deposition

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Proceedings Article | 14 November 2013 Paper

Predictive growth model of LID: light intensification model

ChingSeong Tan, D. Patel, X. Wang, D. Schlitz, P. S. Dehkordi, C. Menoni, E. Chong

Proceedings Volume 8885, 88850A (2013) https://doi.org/10.1117/12.2030291

KEYWORDS: Laser induced damage, Absorption, Backscatter, Light scattering, Ionization, Chemical species, Scattering, Crystals, Monte Carlo methods, Convolution

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Proceedings Article | 14 November 2013 Paper

Laser damage in dielectric films: What we know and what we don't

Wolfgang Rudolph, Luke Emmert, Zhanliang Sun, Dinesh Patel, Carmen Menoni

Proceedings Volume 8885, 888516 (2013) https://doi.org/10.1117/12.2030894

KEYWORDS: Absorption, Laser induced damage, Electrons, Thin films, Continuous wave operation, Microscopy, Scattering, Optical coatings, Silica, Ionization

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Proceedings Article | 14 November 2013 Paper

Confocal photothermal microscopy of thin films based on etalon and thermal lensing effects

Z. Sun, A. Mansoori, X. Zhang, L. Emmert, D. Patel, C. Menoni, W. Rudolph

Proceedings Volume 8885, 88851Y (2013) https://doi.org/10.1117/12.2029955

KEYWORDS: Absorption, Microscopes, Confocal microscopy, Fabry–Perot interferometers, Laser beam diagnostics, Thermal effects, Reflectivity, Signal detection, Thin films, Signal to noise ratio

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Proceedings Article | 27 September 2013 Paper

High-average-power 100-Hz repetition rate table-top soft x-ray lasers

Jorge Rocca, Brendan Reagan, Keith Wernsing, Yong Wang, Liang Yin, Shoujun Wang, Mark Berrill, Mark Woolston, Alden Curtis, Federico J. Furch, Vyacheslav Shlyaptsev, Brad Luther, Dinesh Patel, Mario Marconi, Carmen Menoni

Proceedings Volume 8849, 88490N (2013) https://doi.org/10.1117/12.2024251

KEYWORDS: X-ray lasers, Pulsed laser operation, Plasma, Optical amplifiers, Semiconductor lasers, Molybdenum, Laser applications, Laser development, Picosecond phenomena, Laser energy

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Proceedings Article | 27 September 2013 Paper

Coherent nanopatterning with table-top soft x-ray lasers

W. Li, V. Martinez Esquiroz, D. Patel, L. Urbanski, C. Menoni, J. Rocca, A. Stein, W. Chao, E. Anderson, M. Marconi

Proceedings Volume 8849, 88490W (2013) https://doi.org/10.1117/12.2024472

KEYWORDS: Photomasks, Lithography, Nanolithography, Nanostructures, X-ray lasers, Photoresist materials, Extreme ultraviolet, Coherence imaging, Printing, Imaging systems

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Proceedings Article | 9 July 2013 Paper

Femtosecond to nanosecond laser damage in dielectric materials

W. Rudolph, L. Emmert, C. Rodriguez, Z. Sun, X. Zhang, Y. Xu, C. Menoni, P. Langston, E. Krous, D. Patel

Proceedings Volume 8786, 878602 (2013) https://doi.org/10.1117/12.2020356

KEYWORDS: Absorption, Dielectrics, Femtosecond phenomena, Laser induced damage, Microscopy, Scattering, Annealing, Particles, Thin films, Reflection

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Proceedings Article | 4 December 2012 Paper

Ion beam sputtered Y2O3

D. Patel, P. Langston, L. Imbler, L. Emmert, A. Markosyan, R. Route, M. Fejer, W. Rudolph, C. Menoni

Proceedings Volume 8530, 85300Z (2012) https://doi.org/10.1117/12.976808

KEYWORDS: Ion beams, Absorption, Laser induced damage, Sputter deposition, Argon, Surface roughness, Oxygen, Silica, Optical coatings, Optical properties

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Proceedings Article | 4 December 2012 Paper

What role do defects play in the laser damage behavior of metal oxides?

C. Menoni, P. Langston, E. Krous, D. Patel, L. Emmert, A. Markosyan, B. Reagan, K. Wernsing, Y. Xu, Z. Sun, R. Route, M. Fejer, J. Rocca, W. Rudolph

Proceedings Volume 8530, 85300J (2012) https://doi.org/10.1117/12.981732

KEYWORDS: Oxygen, Absorption, Laser induced damage, Picosecond phenomena, Metals, Oxides, Thin films, Sputter deposition, Ion beams, Silica

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SPIE Journal Paper | 9 July 2012

Third harmonic microscopy of intrinsic and induced material anisotropy in dielectric thin films

Reed Weber, Cristina Rodriguez, Duy Nguyen, Luke Emmert, Wolfgang Rudolph, Dinesh Patel, Carmen Menoni

OE, Vol. 51, Issue 12, 121807, (July 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.12.121807

KEYWORDS: Anisotropy, Microscopy, Thin films, Nanoparticles, Silica, Gold, Polarization, Signal to noise ratio, Dielectrics, Polarized microscopy

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Proceedings Article | 6 December 2011 Paper

Spontaneous and induced absorption in amorphous Ta2O5 dielectric thin films

A. Markosyan, R. Route, M. Fejer, D. Patel, C. Menoni

Proceedings Volume 8190, 81900F (2011) https://doi.org/10.1117/12.899217

KEYWORDS: Absorption, Thin films, Optical coatings, Dielectrics, Oxides, Ultraviolet radiation, Thin film coatings, Radiation effects, Signal detection, Mid-IR

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Proceedings Article | 23 November 2011 Paper

Third harmonic microscopy for optical material characterization

R. Weber, C. Rodriguez, D. Nguyen, L. Emmert, W. Rudolph, D. Patel, C. Menoni

Proceedings Volume 8190, 81900V (2011) https://doi.org/10.1117/12.899265

KEYWORDS: Anisotropy, Microscopy, Silica, Nanoparticles, Interfaces, Gold, Optical materials characterization, Optical microscopy, Polarization, Laser induced damage

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Proceedings Article | 6 December 2010 Paper

Advances in ion beam sputtered Sc2O3 for optical interference coatings

Carmen Menoni, Erik Krous, Dinesh Patel, Peter Langston, Jonathan Tollerud, Duy Nguyen, Luke Emmert, Ashot Markosyan, Roger Route, Martin Fejer, Wolfgang Rudolph

Proceedings Volume 7842, 784202 (2010) https://doi.org/10.1117/12.855604

KEYWORDS: Laser induced damage, Ion beams, Sputter deposition, Oxygen, Scandium, Picosecond phenomena, Refractive index, Atomic force microscopy, Argon, Optical coatings

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Proceedings Article | 2 December 2010 Paper

The vacuum effect of femtosecond LIDT measurements on dielectric films

D. Nguyen, L. Emmert, W. Rudolph, D. Patel, C. Menoni

Proceedings Volume 7842, 78420V (2010) https://doi.org/10.1117/12.867996

KEYWORDS: Oxygen, Silica, Dielectrics, Femtosecond phenomena, Atomic layer deposition, Atmospheric optics, Nitrogen, Laser damage threshold, Ionization, Electrons

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Proceedings Article | 29 November 2010 Paper

Femtosecond pulse S on 1 LIDT in dielectric materials: comparison of experiment and theory

L. Emmert, M. Mero, D. Nguyen, W. Rudolph, D. Patel, E. Krous, C. Menoni

Proceedings Volume 7842, 784211 (2010) https://doi.org/10.1117/12.868035

KEYWORDS: Ionization, Dielectrics, Laser damage threshold, Pulsed laser operation, Picosecond phenomena, Femtosecond phenomena, Absorption, Dielectric breakdown, Laser induced damage, Oxides

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Proceedings Article | 31 December 2009 Paper

Studies of femtosecond laser induced damage of HfO2 thin film in atmospheric and vacuum environments

D. Nguyen, L. Emmert, W. Rudolph, D. Patel, E. Krous, C. Menoni, M. Shinn

Proceedings Volume 7504, 750403 (2009) https://doi.org/10.1117/12.836505

KEYWORDS: Silica, Nitrogen, Femtosecond phenomena, Thin films, Laser damage threshold, Ionization, Free electron lasers, Dielectrics, Coating, Atmospheric optics

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Proceedings Article | 31 December 2009 Paper

The effect of nitrogen doping on the multiple-pulse subpicosecond dielectric breakdown of hafnia films

D. Nguyen, L. Emmert, W. Rudolph, D. Patel, E. Krous, C. Menoni

Proceedings Volume 7504, 750402 (2009) https://doi.org/10.1117/12.836504

KEYWORDS: Nitrogen, Laser damage threshold, Oxides, Hafnium, Doping, Electrons, Dielectric breakdown, Oxygen, Ions, Ionization

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Proceedings Article | 31 December 2009 Paper

Fundamental processes controlling the single and multiple femtosecond pulse damage behavior of dielectric oxide films

L. Emmert, D. Nguyen, M. Mero, W. Rudolph, D. Ristau, K. Starke, M. Jupé, C. Menoni, D. Patel, E. Krous

Proceedings Volume 7504, 75040P (2009) https://doi.org/10.1117/12.836508

KEYWORDS: Electrons, Ionization, Laser damage threshold, Oxides, Dielectrics, Laser induced damage, Absorption, Femtosecond phenomena, Pulsed laser operation, Picosecond phenomena

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Proceedings Article | 31 December 2009 Paper

Optimization of scandia thin films for high power laser coating applications

Erik Krous, Dinesh Patel, Ashot Markosyan, Duy Nguyen, Luke Emmert, Peter Langston, Roger Route, Martin Fejer, Wolfgang Rudolph, Michelle Shinn, Carmen Menoni

Proceedings Volume 7504, 750407 (2009) https://doi.org/10.1117/12.836915

KEYWORDS: Laser damage threshold, Oxygen, Coating, Ion beams, Refractive index, Absorption, Thin films, Sputter deposition, Thin film coatings, High power lasers

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Proceedings Article | 30 December 2008 Paper

Electron spin resonance spectroscopy investigation of ion beam sputtered HfO2 and SiO2 thin films

B. Langdon, D. Patel, E. Krous, P. Langston, C. Menoni, Michelle Shinn

Proceedings Volume 7132, 71320M (2008) https://doi.org/10.1117/12.804459

KEYWORDS: Silica, Annealing, Ion beams, Thin films, Spectroscopy, Oxygen, Hafnium, Spectrometers, Signal detection, Hybrid fiber optics

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Proceedings Article | 30 December 2008 Paper

SiO2/HfO2 multilayers: impact of process parameters and stack geometry on the optical and structural properties

D. Patel, P. Langston, A. Markosyan, E. Krous, B. Langdon, F. Furch, B. Reagan, R. Route, M. Fejer, J. Rocca, C. Menoni

Proceedings Volume 7132, 71320L (2008) https://doi.org/10.1117/12.804434

KEYWORDS: Multilayers, Absorption, Laser induced damage, Optical coatings, Ions, Silica, Argon, Surface roughness, Ion beams, Chemical species

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Proceedings Article | 30 December 2008 Paper

The effect of annealing on the subpicosecond breakdown behavior of hafnia films

Duy Nguyen, Luke Emmert, Mark Mero, Wolfgang Rudolph, Dinesh Patel, Eric Krous, Carmen Menoni

Proceedings Volume 7132, 71320N (2008) https://doi.org/10.1117/12.804452

KEYWORDS: Annealing, Laser damage threshold, Absorption, Picosecond phenomena, Laser induced damage, Silica, Dielectrics, Optical coatings, High power lasers, Femtosecond phenomena

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Proceedings Article | 16 January 2008 Paper

Influence of process conditions on the optical properties of HfO2/SiO2 coatings for high-power laser coatings

B. Langdon, D. Patel, E. Krous, J. Rocca, C. Menoni, F. Tomasel, S. Kholi, P. McCurdy, Peter Langston, Albert Ogloza

Proceedings Volume 6720, 67200X (2008) https://doi.org/10.1117/12.753027

KEYWORDS: Hybrid fiber optics, Surface roughness, Crystals, Argon, Optical coatings, Atomic force microscopy, Ion beams, Sputter deposition, Ions, High power lasers

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Proceedings Article | 11 October 2007 Paper

Interferometric lithography with sub-100-nm resolution using a tabletop 46.9-nm laser

P. Wachulak, D. Patel, M. Capeluto, C. Menoni, J. Rocca, M. Marconi

Proceedings Volume 6702, 67020I (2007) https://doi.org/10.1117/12.732900

KEYWORDS: Photoresist materials, Mirrors, Interferometry, Polymethylmethacrylate, Lithography, Laser applications, Nanostructures, Extreme ultraviolet, Capillaries, Photoresist developing

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Proceedings Article | 8 October 2007 Paper

High-brightness tabletop soft X-ray lasers at high repetition rate: injection-seeding of solid target plasma amplifiers and other developments

J. Rocca, Y. Wang, B. Luther, M. Berrill, M. Larotonda, E. Granados, D. Alessi, D. Martz, F. Pedacci, D. Patel, V. Shlyaptsev, C. Menoni

Proceedings Volume 6702, 670202 (2007) https://doi.org/10.1117/12.734285

KEYWORDS: Amplifiers, X-ray lasers, Plasma, Solids, Optical amplifiers, Silver, Pulsed laser operation, Laser applications, Picosecond phenomena, Spatial coherence

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Proceedings Article | 15 January 2007 Paper

Assessing the impact of atomic oxygen in the damage threshold and stress of Hafnia films grown by ion beam sputter deposition

D. Patel, Y. Wang, M. Larotonda, J. Lovewell, J. Jensen, K. Hsiao, E. Krous, J. Rocca, C. Menoni, F. Tomasel, S. Kholi, P. McCurdy

Proceedings Volume 6403, 640314 (2007) https://doi.org/10.1117/12.696080

KEYWORDS: Hybrid fiber optics, Oxygen, Ion beams, Laser damage threshold, Sputter deposition, Plasma, Picosecond phenomena, Optical coatings, Laser induced damage, X-ray diffraction

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Proceedings Article | 4 December 2002 Paper

Small signal frequency response of laser diodes using a femtosectond frequency comb

Ovidio Anton, G. Vaschenko, Dinesh Patel, Jon Pikal, Carmen Menoni

Proceedings Volume 4871, (2002) https://doi.org/10.1117/12.460479

KEYWORDS: Modulation, Semiconductor lasers, Optical parametric oscillators, Quantum wells, Femtosecond phenomena, Optical testing, Laser optics, Spectrum analysis, Laser damage threshold, Optical amplifiers

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Proceedings Article | 11 June 2002 Paper

Improvement in the frequency response of 1.3-um buried heterostructure InAsP lasers

Carmen Menoni, Ovidio Anton, Dinesh Patel, G. Vaschenko, Gary Robinson, Jon Pikal

Proceedings Volume 4643, (2002) https://doi.org/10.1117/12.470420

KEYWORDS: Modulation, Quantum wells, Optical parametric oscillators, Semiconductor lasers, Heterojunctions, Resistors, Laser optics, Femtosecond phenomena, Optical testing, Solids

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Proceedings Article | 8 November 2001 Paper

Analysis of the modulation response of 1.3-um strained InAsP lasers

Ovidio Anton, Dinesh Patel, G. Vaschenko, Gary Robinson, Jon Pikal, Carmen Menoni

Proceedings Volume 4533, (2001) https://doi.org/10.1117/12.447767

KEYWORDS: Modulation, Quantum wells, Semiconductor lasers, Inductance, Heterojunctions, Resistors, Laser damage threshold, Network security, Laser processing, Signal analysis

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Showing 5 of 36 publications

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