Ms. Deitze Otaduy Profile

Deitze Otaduy

at Univ. of Deusto

SPIE Involvement:

Editor | Author

SPIE Journal Paper | 5 December 2012

Optical design and development of a fiber coupled high-power diode laser system for laser transmission welding of plastics

Eva Rodríguez Vidal, Iban Quintana, Jon Etxarri, Urko Azkorbebeitia, Deitze Otaduy, Francisco González, Fernando Moreno

OE, Vol. 51, Issue 12, 124301, (December 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.12.124301

KEYWORDS: Semiconductor lasers, Laser systems engineering, Fiber coupled lasers, Laser welding, Polarization, Fiber couplers, Laser development, Optical design, Optical fibers, Zemax

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Proceedings Article | 9 May 2012 Paper

Laser transmission welding of Acrylonitrile-Butadiene-Styrene (ABS) using a tailored high power diode-laser optical fiber coupled system

E. Rodríguez-Vidal, I. Quintana, J. Etxarri, D. Otaduy, F. González, F. Moreno

Proceedings Volume 8433, 84330U (2012) https://doi.org/10.1117/12.922570

KEYWORDS: Semiconductor lasers, Laser welding, Polarization, Optical fibers, Polymers, Laser systems engineering, Fiber coupled lasers, Mirrors, Fiber couplers, Carbon nanotubes

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Laser transmission welding (LTW) of polymers is a direct bonding technique which is already used in different industrial applications sectors such as automobile, microfluidic, electronic and biomedicine. This technique offers several advantages over conventional methods, especially when a local deposition of energy and minimum thermal distortions are required. In LTW one of the polymeric materials needs to be transparent to the laser wavelength and the second part needs to be designed to be absorbed in IR spectrum. This report presents a study of laser weldability of ABS (acrylonitrile/butadiene/styrene) filled with two different concentrations of carbon nanotubes (0.01% and 0.05% CNTs). These additives are used as infrared absorbing components in the laser welding process, affecting the thermal and optical properties of the material and, hence, the final quality of the weld seam. A tailored laser system has been designed to obtain high quality weld seams with widths between 0.4 and 1.0mm. It consists of two diode laser bars (50W per bar) coupled into an optical fiber using a non-imaging solution: equalization of the beam quality factor (M²) in the slow and fast axes by a pair of micro step-mirrors. The beam quality factor has been analyzed at different laser powers with the aim to guarantee a coupling efficiency to the multimode optical fiber. The power scaling is carried out by means of multiplexing polarization technique. The analysis of energy balance and beam quality is performed in two linked steps: first by means ray tracing simulations (ZEMAX^®) and second, by validation. Quality of the weld seams is analyzed in terms of the process parameters (welding speed, laser power and clamping pressure) by visual and optical microscope inspections. The optimum laser power range for three different welding speeds is determinate meanwhile the clamping pressure is held constant. Additionally, the corresponding mechanical shear tests were carried out to analyze the mechanical properties of the weld seams. This work provides a detailed study concerning the effect of the material microstructure and laser beam quality on the final weld formation and surface integrity.

Proceedings Article | 14 May 2010 Paper

Low temperature and UV curable sol-gel coatings for long lasting optical fiber biosensors

D. Otaduy, A. Villar, E. Gomez-Herrero, A. Goitandia, E. Gorritxategi, I. Quintana

Proceedings Volume 7726, 772609 (2010) https://doi.org/10.1117/12.854543

KEYWORDS: Optical fibers, Cladding, Sol-gels, Sensors, Ultraviolet radiation, Optical coatings, Glasses, Water, Fiber optics, Etching

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Proceedings Article | 14 May 2010 Paper

Visible/NIR on-line sensor for marine engine oil condition monitoring applying chemometric methods

A. Villar, E. Gorritxategi, S. Fernandez, D. Otaduy, A. Arnaiz, J. Ciria, Luis Fernandez

Proceedings Volume 7726, 77262F (2010) https://doi.org/10.1117/12.862642

KEYWORDS: Sensors, Water, Infrared sensors, Oceanography, Statistical modeling, Coastal modeling, Chemometrics, Combustion, Ocean optics, Oxidation

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Proceedings Article | 18 February 2010 Paper

Fiber coupling of high-power diode laser stack for direct polycarbonate processing

E. Vidal, I. Quintana, U. Azkorbebeitia, E. Mendez, G. Viera, M. Galán, D. Otaduy

Proceedings Volume 7583, 75830G (2010) https://doi.org/10.1117/12.841603

KEYWORDS: Semiconductor lasers, Laser welding, Optical fibers, Laser systems engineering, Fiber couplers, Optical design, Laser development, Lasers, Fiber coupled lasers, Polymers

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Proceedings Article | 24 August 2009 Paper

Design and optimization of a collimating optical system for high divergence LED light sources

E. Vidal, D. Otaduy, F. González, J. Saiz, F. Moreno

Proceedings Volume 7428, 74280C (2009) https://doi.org/10.1117/12.825287

KEYWORDS: Mirrors, Light emitting diodes, Collimation, Light sources, Aspheric lenses, Polymethylmethacrylate, Optical design, Silicon, Optimization (mathematics), Sensors

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Proceedings Article | 21 October 2005 Paper

A decision support system for ship identification based on the curvature scale space representation

Álvaro Enríquez de Luna, Carlos Miravet, Deitze Otaduy, Carlos Dorronsoro

Proceedings Volume 5988, 59880K (2005) https://doi.org/10.1117/12.630532

KEYWORDS: Databases, Visualization, Image processing, Image sensors, Decision support systems, Image filtering, System identification, Visual process modeling, Sensors, Target recognition

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Proceedings Article | 12 October 2005 Paper

Simulated intensified images

Carlos Dorronsoro, Deitze Otaduy, Yolanda Navarro, Javier Portilla

Proceedings Volume 5987, 59870D (2005) https://doi.org/10.1117/12.630665

KEYWORDS: Modulation transfer functions, Signal to noise ratio, Image intensifiers, Electrons, Visualization, Photons, Image processing, Cameras, Transmittance, Night vision

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Proceedings Article | 6 December 2004 Paper

Optimum parameters in image intensifier MTF measurements

Sergio Ortiz, Deitze Otaduy, Carlos Dorronsoro

Proceedings Volume 5612, (2004) https://doi.org/10.1117/12.578066

KEYWORDS: Modulation transfer functions, Image intensifiers, Cameras, Contrast transfer function, Image quality standards, Algorithm development, Imaging systems, Dielectrophoresis, Image quality, Detection and tracking algorithms

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Showing 5 of 9 publications

SPIE Conference Volume | 19 October 2021

Optical Fabrication, Testing, and Metrology VII

Conference Committee Involvement (1)

Optical Fabrication, Testing, and Metrology VII

13 September 2021 | Online Only, Spain

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