Dr. Tuomas H. Vallius Profile

Dr. Tuomas H. Vallius

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Publications (13)

Proceedings Article | 5 May 2010 Paper

Fast-switching frequency-converted laser light source for display applications

J. Konttinen, P. Tuomisto, T. Vallius, T. Jouhti

Proceedings Volume 7723, 77230T (2010) https://doi.org/10.1117/12.851384

KEYWORDS: Semiconductor lasers, Speckle, Laser applications, Light sources, Diodes, Waveguides, Infrared radiation, Visibility, Nonlinear crystals, Frequency conversion

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Proceedings Article | 17 February 2010 Paper

Low-cost frequency-converted laser light sources

J. Konttinen, P. Tuomisto, T. Vallius, P. Pietilä, T. Jouhti

Proceedings Volume 7578, 75780S (2010) https://doi.org/10.1117/12.842545

KEYWORDS: Continuous wave operation, Speckle, Light sources, Waveguides, Nonlinear crystals, Infrared lasers, Visibility, Laser stabilization, Fiber Bragg gratings, Semiconductor lasers

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Proceedings Article | 23 January 2006 Paper

Giant optical activity in quasi-2D planar nanostructures

Makoto Kuwata-Gonokami, Nobuyoshi Saito, Yusuke Ino, Kuniaki Konishi, Martti Kauranen, Konstantins Jefimovs, Tuomas Vallius, Jari Turunen, Yuri Svirko

Proceedings Volume 6110, 61100G (2006) https://doi.org/10.1117/12.644491

KEYWORDS: Polarization, Dielectric polarization, Interfaces, Optical activity, Nanostructures, Gold, Metals, Plasmons, Particles, Diffraction

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Proceedings Article | 20 January 2006 Paper

Electromagnetic models for the analysis and design of complex diffractive microstructures

Tuomas Vallius, Jari Turunen

Proceedings Volume 6027, 602704 (2006) https://doi.org/10.1117/12.667699

KEYWORDS: Electromagnetism, Diffraction, Optical design, Interfaces, Radio propagation, Diffraction gratings, Dielectric polarization, Optical components, Refractive index, Geometrical optics

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Proceedings Article | 20 January 2006 Paper

Illumination independent mixed colors produced by diffractive optics

Noora Tossavainen, Tuomas Vallius, Markku Kuittinen

Proceedings Volume 6027, 60273P (2006) https://doi.org/10.1117/12.668340

KEYWORDS: Light sources, Diffraction gratings, Lamps, Eye, Optical filters, LCDs, Micro optics, Modulation, Diffraction, Light wave propagation

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Proceedings Article | 20 January 2006 Paper

Electromagnetic optimization of wideband spectrograph gratings

Juha Pietarinen, Tuomas Vallius

Proceedings Volume 6027, 60273O (2006) https://doi.org/10.1117/12.668339

KEYWORDS: Diffraction gratings, Diffraction, Optical design, Spectrographs, Binary data, Electromagnetism, Information operations, Optics manufacturing, Indium nitride, Structural design

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Proceedings Article | 23 September 2005 Open Access

Diffractive optics in industry and research: novel components for optical security systems

Pasi Laakkonen, Jari Turunen, Juha Pietarinen, Samuli Siitonen, Janne Laukkanen, Konstantins Jefimovs, Joni Orava, Mikko Ritala, Tero Pilvi, Hemmo Tuovinen, Kalle Ventola, Tuomas Vallius, Matti Kaipiainen, Markku Kuittinen

Proceedings Volume 5954, 595402 (2005) https://doi.org/10.1117/12.622125

KEYWORDS: Diffraction gratings, Optics manufacturing, Diffraction, Manufacturing, Optical design, Nickel, Antireflective coatings, Waveguides, Diffractive optical elements, Infrared radiation

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Proceedings Article | 7 February 2005 Paper

Perturbation approach for analyzing microstructures

Tuomas Vallius

Proceedings Volume 5636, (2005) https://doi.org/10.1117/12.577019

KEYWORDS: Diffraction, Beam splitters, Binary data, Diffraction gratings, Phase shifts, Transition metals, Analog electronics, Physics, Geometrical optics, Electromagnetic theory

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Proceedings Article | 7 February 2005 Paper

High efficiency in beam splitters fabricated over thin film stacks

Henna Elfstrom, Tuomas Vallius, Markku Kuittinen, Tina Clausnitzer, Ernst-Bernhard Kley

Proceedings Volume 5636, (2005) https://doi.org/10.1117/12.576785

KEYWORDS: Diffraction gratings, Diffraction, Antireflective coatings, Thin films, Beam splitters, Coating, Refractive index, Silicon, Silica, Titanium dioxide

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Proceedings Article | 20 January 2005 Paper

Polarization modulation in metallic nanostructures and effects of surface plasmon excitation

Tuomas Vallius, Yuri Svirko, Jari Turunen, Brian Canfield, Martti Kauranen

Proceedings Volume 5633, (2005) https://doi.org/10.1117/12.576607

KEYWORDS: Polarization, Particles, Optical activity, Surface plasmons, Nanostructures, Diffraction, Modulation, Waveguide modes, Resonance enhancement, Electrons

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Proceedings Article | 19 October 2004 Paper

Exceptional linear and nonlinear optical properties of low-symmetry metal nanoparticle arrays

Brian Canfield, Sami Kujala, Konstantins Jefimovs, Tuomas Vallius, Jari Turunen, Martti Kauranen

Proceedings Volume 5512, (2004) https://doi.org/10.1117/12.555762

KEYWORDS: Nanoparticles, Particles, Polarization, Second-harmonic generation, Optical activity, Metals, Data modeling, Electron beam lithography, Gold, Sensors

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Proceedings Article | 1 September 2004 Paper

Rigorous and approximate analysis of metallic gratings in soft X-ray and EUV regions

Tuomas Vallius, Pasi Vahimaa, Jari Turunen

Proceedings Volume 5456, (2004) https://doi.org/10.1117/12.563338

KEYWORDS: X-rays, Diffraction, Refractive index, Gold, Extreme ultraviolet, Metals, Optical filters, Absorption, Ultraviolet radiation, Infrared radiation

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Proceedings Article | 31 December 2003 Paper

Local spherical interface approximation in the analysis of field propagation through modulated interfaces

Hanna Lajunen, Jani Tervo, Tuomas Vallius, Jari Turunen, Frank Wyrowski

Proceedings Volume 5182, (2003) https://doi.org/10.1117/12.509476

KEYWORDS: Interfaces, Spherical lenses, Wave propagation, Diffraction, Radio propagation, Modulation, Modeling, Diffraction gratings, Chemical elements, Geometrical optics

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Showing 5 of 13 publications

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