Dr. Francisco J. Villarreal-Saucedo Profile

Dr. Francisco J. Villarreal-Saucedo

VP of R&D at Nuburu Inc

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 17 March 2023 Presentation

Advances in high-power/high-brightness diode lasers operating at 445nm for material processing applications (Conference Presentation)

Christopher Halle, Bien Chann, Francisco Villarreal, Bryan Lochman, Wang Zhou, Matthew Sauter, Abraham Wong, Futoshi Tsutsumi, Takaoshi Okamoto

Proceedings Volume 12403, 124030P (2023) https://doi.org/10.1117/12.2650542

KEYWORDS: Materials processing, Reflectivity, Laser sources, Laser cutting, Fiber lasers, Fiber coupled lasers, Copper, Near infrared, Metals, Semiconductor lasers

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Proceedings Article | 1 April 2022 Presentation

Advances in blue high-power/high-brightness direct diode lasers using wavelength beam combining

Bien Chann, Francisco Villarreal, Wang-Long Zhou, John Roethle, Abraham Wong-Guiterrez, Matthew Sauter, Christopher Halle, Shinya Domoto, Bryan Lochman

Proceedings Volume PC11983, PC1198307 (2022) https://doi.org/10.1117/12.2611220

KEYWORDS: Semiconductor lasers, Laser applications, Fiber lasers, Fiber coupled lasers, Copper, Reflectivity, Laser welding, Laser sources, Laser processing, Fiber couplers

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Proceedings Article | 1 April 2022 Presentation

A novel method for electrically isolated impingement cooling of high-power diode laser bars

Francisco Villarreal, Bien Chann, Fernando Monjardin, Christopher Halle, Michael Denninger, Myrna Reyes, Shinya Domoto, Bryan Lochman

Proceedings Volume PC11982, PC1198203 (2022) https://doi.org/10.1117/12.2611234

KEYWORDS: Semiconductor lasers, High power diode lasers, Laser systems engineering, Laser applications, High power lasers, Reliability, Manufacturing, Continuous wave operation

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Proceedings Article | 9 March 2020 Presentation

Advances in blue and near-IR high-power/high-brightness direct diode lasers using wavelength beam combining (Conference Presentation)

Francisco Villarreal, Wang Zhou, John Roethle, Matthew Sauter, Keita Inoue, Bryan Lochman, Bien Chann

Proceedings Volume 11262, 112620U (2020) https://doi.org/10.1117/12.2544435

KEYWORDS: Laser applications, Semiconductor lasers, Mid-IR, Metals, Beam shaping, Diodes, Laser processing

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Proceedings Article | 14 September 2018 Paper

Dynamic Beam Shaper (DBS) for high-power/high-brightness direct diode laser (DDL)

M. Reyes, K. Nowak, F, Villarreal-Saucedo, B. Chann, W. Zhou, P. Tayebati

Proceedings Volume 10744, 107440W (2018) https://doi.org/10.1117/12.2322912

KEYWORDS: High power diode lasers, Beam shaping, Laser cutting, Semiconductor lasers, Aluminum, Laser applications, Laser processing

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Proceedings Article | 22 February 2017 Paper

A cutting-edge solution for 1µm laser metal processing

N. Baumbach, P. Kühl, J. Karam, J. Jonkers, F. Villarreal-Saucedo, M. Reyes

Proceedings Volume 10097, 100970J (2017) https://doi.org/10.1117/12.2252077

KEYWORDS: Laser cutting, Laser processing, Head, High power lasers, Beam shaping, Axicons, Laser sources

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Proceedings Article | 22 February 2013 Paper

Optimization of the intra-cavity optical flux in the unstable direction in RF excited annular CO2 laser in terms of power stability

Viktor Granson, Francisco Villarreal, Jochen Deile, Jesus Monjardin, Shadi Sumrain

Proceedings Volume 8600, 860004 (2013) https://doi.org/10.1117/12.2005071

KEYWORDS: Mirrors, Resonators, Laser stabilization, Carbon dioxide lasers, Confocal microscopy, Ray tracing, Beam shaping, Axicons, High power lasers, Laser resonators

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Proceedings Article | 7 February 2012 Paper

Comprehensive analysis of thermal lensing effects on the coaxial resonator of a high power RF-Excited CO2 laser

Viktor Granson, Francisco Villarreal, Jochen Deile, Jesus Monjardin, Shadi Sumrain

Proceedings Volume 8236, 823606 (2012) https://doi.org/10.1117/12.906888

KEYWORDS: Resonators, Carbon dioxide lasers, Thermal effects, Mirrors, Optical resonators, Laser applications, Electrodes, High power lasers, Free space, Axicons

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Proceedings Article | 7 February 2008 Paper

Power scaling issues of diffusion cooled annular CO2 lasers in the multi-kilowatt region

Viktor Granson, Shadi Sumrain, Peter Daniel, Francisco Villarreal, Jochen Deile

Proceedings Volume 6872, 687209 (2008) https://doi.org/10.1117/12.763060

KEYWORDS: Resonators, Electrodes, Carbon dioxide lasers, Mirrors, Laser resonators, Axicons, Diffusion, Laser marking, Plasma, Beam shaping

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Proceedings Article | 14 February 2007 Paper

Experimental and theoretical study of a coaxial, hybrid-stable-unstable resonator for high-power lasers

Bodo Ehlers, Jochen Deile, Shadi Sumrain, Viktor Granson, Francisco Villarreal, Viorel Negoita

Proceedings Volume 6452, 64520G (2007) https://doi.org/10.1117/12.700864

KEYWORDS: Mirrors, Resonators, Axicons, Electrodes, Gas lasers, Laser resonators, High power lasers, Laser beam propagation, Carbon monoxide, Laser cutting

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Proceedings Article | 8 June 2005 Paper

Enhanced peak power CO2 laser processing of PCB materials

C. Moorhouse, F. Villarreal, J. Wendland, H. Baker, D. Hall, D. Hand

Proceedings Volume 5827, (2005) https://doi.org/10.1117/12.605096

KEYWORDS: Copper, Dielectrics, Laser drilling, Gas lasers, Plasma, Pulsed laser operation, Carbon monoxide, Absorption, Coating, Bragg cells

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Proceedings Article | 21 February 2005 Paper

Highly localized CO2 laser cleaning and damage repair of silica optical surfaces

Enrique Mendez, Howard Baker, Krzysztof Nowak, Francisco Villarreal, Denis Hall

Proceedings Volume 5647, (2005) https://doi.org/10.1117/12.585293

KEYWORDS: Gas lasers, Pulsed laser operation, Silica, Laser ablation, Carbon monoxide, Atomic force microscopy, Diamond, Glasses, Bragg cells, Microscopes

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Proceedings Article | 15 July 2004 Paper

Single-pulse microvia drilling of resin-coated copper substrates using an enhanced peak power planar waveguide CO2 laser

Colin Moorhouse, Francisco Villarreal, Jozef Wendland, Howard Baker, Denis Hall, Duncan Hand

Proceedings Volume 5339, (2004) https://doi.org/10.1117/12.532310

KEYWORDS: Copper, Gas lasers, Laser drilling, Pulsed laser operation, Carbon monoxide, Cameras, Plasma, Planar waveguides, Laser damage threshold, Metals

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Proceedings Article | 10 November 2003 Paper

Pulsed operation of a 300W RF discharge excited planar waveguide CO laser with room temperature coolant

Francisco Villarreal, J. Wendland, Denis Hall, H. Baker

Proceedings Volume 5120, (2003) https://doi.org/10.1117/12.515467

KEYWORDS: Gas lasers, Pulsed laser operation, Laser resonators, Planar waveguides, Carbon dioxide lasers, Resonators, Absorption, Electrodes, Waveguides, Thermal effects

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Proceedings Article | 10 November 2003 Paper

High-power RF-excited planar waveguide carbon dioxide lasers for microprocessing applications

Denis Hall, H. Baker, F. Villarreal

Proceedings Volume 5120, (2003) https://doi.org/10.1117/12.515452

KEYWORDS: Carbon dioxide lasers, Planar waveguides, Pulsed laser operation, Laser applications, Electrodes, High power lasers, Laser processing, Carbon dioxide, Gas lasers, Absorption

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Proceedings Article | 10 November 2003 Paper

Line stabilization of slab waveguide CO2 lasers and the laser signature revisited

Howard Baker, P. Field, F. Villarreal, S. Stratton, R. Ramirez, D. Hall

Proceedings Volume 5120, (2003) https://doi.org/10.1117/12.515469

KEYWORDS: Resonators, Carbon dioxide lasers, Laser resonators, Waveguides, Waveguide lasers, Electrodes, Laser stabilization, Mirrors, Laser engraving, Pulsed laser operation

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Proceedings Article | 25 January 2001 Paper

High-peak-power CO2 planar waveguide lasers for direct high-resolution machining

Francisco Villarreal, Paul Murray, Howard Baker, Gavin Markillie, R. Ramirez, Quisheng Cao, Denis Hall

Proceedings Volume 4184, (2001) https://doi.org/10.1117/12.414064

KEYWORDS: Pulsed laser operation, Carbon dioxide lasers, Planar waveguides, Carbon dioxide, Continuous wave operation, Electrodes, Gas lasers, Picosecond phenomena, Laser ablation, High power lasers

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Proceedings Article | 14 September 1998 Paper

Ablation of concrete surfaces using a compact high-power CO2 waveguide array laser with beam shaping

Francisco Villarreal, R. Abram, Howard Baker, Denis Hall, D. Jones, E. Johnston, G. Shannon, William Steen, Julian Spencer

Proceedings Volume 3343, (1998) https://doi.org/10.1117/12.321610

KEYWORDS: Carbon dioxide lasers, Beam shaping, Waveguides, Mirrors, Waveguide lasers, Carbon dioxide, Laser ablation, Near field, High power lasers, Contamination

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Proceedings Article | 4 April 1997 Paper

Two-dimensional waveguide CO2 laser arrays and beam reformatting

R. Abram, Paul Blair, Francisco Villarreal, Alan Colley, Howard Baker, Mohammad Taghizadeh, Denis Hall

Proceedings Volume 3092, (1997) https://doi.org/10.1117/12.270193

KEYWORDS: Waveguides, Mirrors, Waveguide lasers, Beam shaping, Carbon dioxide lasers, Electrodes, Diffusion, Gas lasers, Diffractive optical elements, Resonators

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Showing 5 of 19 publications

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