Prof. Joachim R. Krenn Profile

Prof. Joachim R. Krenn

Associate Professor/Experimental Physics at Karl-Franzens-Univ Graz

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 24 May 2022 Presentation + Paper

Nonadiabatic nano-optical tunneling of photoelectrons in plasmonic near-fields

Béla Lovász, Péter Sándor, Gellért-Zsolt Kiss, Balázs Bánhegyi, Péter Rácz, Zsuzsanna Pápa, Judit Budai, Christine Prietl, Joachim Krenn, Péter Dombi

Proceedings Volume 12131, 121310B (2022) https://doi.org/10.1117/12.2620634

KEYWORDS: Lab on a chip, Ionization, Solids, Gold, Free electron lasers, Silica

Read Abstract +

SPIE Journal Paper | 19 September 2017

Adjusting the emission color of organic light-emitting diodes through aluminum nanodisc arrays

Manuel Auer-Berger, Veronika Tretnak, Franz-Peter Wenzl, Joachim Krenn, Emil J. List-Kratochvil

OE, Vol. 56, Issue 09, 097102, (September 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.9.097102

KEYWORDS: Organic light emitting diodes, Aluminum, Neodymium, Luminescence, Electroluminescence, Optical engineering, Plasmonics, Optical microcavities, Finite-difference time-domain method, External quantum efficiency

Read Abstract +

Proceedings Article | 16 February 2017 Paper

Tuning of the emission color of organic light emitting diodes via smartly designed aluminum plasmonics

Manuel Auer-Berger, Veronika Tretnak, Franz-Peter Wenzl, Joachim Krenn, Emil J. List-Kratochvil

Proceedings Volume 10101, 101010C (2017) https://doi.org/10.1117/12.2252327

KEYWORDS: Nanoparticles, Organic light emitting diodes, Aluminum, Plasmonics, Electroluminescence, Nanophotonics, Luminescence, Neodymium, External quantum efficiency, Surface plasmons, Scanning electron microscopy

Read Abstract +

Proceedings Article | 6 January 2015 Paper

Fluorescence coupling to plasmonic nanoparticles

Gernot Schaffernak, Christian Gruber, Joachim Krenn, Markus Krug, Marija Gašparić, Martin Belitsch, Andreas Hohenau

Proceedings Volume 9450, 94501S (2015) https://doi.org/10.1117/12.2070333

KEYWORDS: Gold, Nanoparticles, Luminescence, Plasmonics, Quantum dots, Metals, Silica, Dielectrics, Refractive index, Atomic force microscopy

Read Abstract +

Proceedings Article | 25 February 2014 Paper

Nanostructured fibre tip for trapping of nanoparticles

Jean-Claude Tinguely, Ming Ding, Gilberto Brambilla, Andreas Hohenau, Joachim Krenn, Olav Hellesø

Proceedings Volume 8999, 89991D (2014) https://doi.org/10.1117/12.2037240

KEYWORDS: Particles, Nanoparticles, Gold, Glasses, Near field scanning optical microscopy, Near field optics, Microscopes, Nanostructuring, Optical tweezers, Objectives

Read Abstract +

Proceedings Article | 6 February 2012 Paper

Integrated waveguide sensor platform utilizing organic photodiodes

Bernhard Lamprecht, Martin Sagmeister, Elke Kraker, Paul Hartmann, Georg Jakopic, Stefan Köstler, Harald Ditlbacher, Nicole Galler, Joachim Krenn, Birgit Ungerböck, Tobias Abel, Torsten Mayr

Proceedings Volume 8234, 82341H (2012) https://doi.org/10.1117/12.908432

KEYWORDS: Sensors, Waveguides, Waveguide sensors, Refractive index, Luminescence, Photodiodes, Surface plasmons, Metals, Oxygen, Positron emission tomography

Read Abstract +

Proceedings Article | 7 May 2011 Paper

Waveguide-integrated SPR sensing on an all-organic platform

Joachim Krenn, Nicole Galler, Harald Ditlbacher, Andreas Hohenau, Bernd Lamprecht, Elke Kraker, Georg Jakopic, Torsten Mayr

Proceedings Volume 8073, 80730F (2011) https://doi.org/10.1117/12.886627

KEYWORDS: Waveguides, Sensors, Surface plasmons, Refractive index, Organic materials, Gold, Waveguide modes, Integrated optics, Polymer multimode waveguides, Luminescence

Read Abstract +

Proceedings Article | 18 August 2010 Paper

A comprehensive study on the parameters effecting color conversion in phosphor converted white light emitting diodes

C. Sommer, F. P. Wenzl, F. Reil, J. Krenn, P. Pachler, S. Tasch, P. Hartmann

Proceedings Volume 7784, 77840D (2010) https://doi.org/10.1117/12.860387

KEYWORDS: Light emitting diodes, Refractive index, Particles, Light scattering, Scattering, Atmospheric particles, Blue light emitting diodes, Sensors, Light, Light sources and illumination

Read Abstract +

Proceedings Article | 14 May 2010 Paper

Light coupling for integrated optical waveguide-based sensors

Michael Steindorfer, Bernhard Lamprecht, Volker Schmidt, Tobias Abel, Torsten Mayr, Joachim Krenn

Proceedings Volume 7726, 77261S (2010) https://doi.org/10.1117/12.854163

KEYWORDS: Waveguides, Molecules, Light scattering, Scattering, Sensors, Luminescence, Integrated optics, Refractive index, Integrating spheres, Optical sensors

Read Abstract +

Proceedings Article | 18 November 2008 Paper

Novel solutions toward improved high power white LED light source

Franz Wenzl, Christian Sommer, Ladislav Kuna, Ernst Zinterl, Joachim Krenn, Paul Hartmann, Peter Pachler, Marko Schweighart, Stefan Tasch, Günther Leising

Proceedings Volume 7138, 71382C (2008) https://doi.org/10.1117/12.818083

KEYWORDS: Light emitting diodes, Absorption, Light sources, Blue light emitting diodes, Light, Sensors, Particles, LED lighting, Solid state lighting, Coating

Read Abstract +

Proceedings Article | 18 November 2008 Paper

Novel approaches for light control of high power LEDs

Ladislav Kuna, Franz Wenzl, Christian Sommer, Anja Haase, Ernst Zinterl, Joachim Krenn, Paul Hartmann, Peter Pachler, Marko Schweighart, Stefan Tasch, Günther Leising

Proceedings Volume 7138, 71382B (2008) https://doi.org/10.1117/12.818082

KEYWORDS: Light emitting diodes, Sapphire, Silicon, Confocal microscopy, Objectives, Atomic force microscopy, Image enhancement, Solid state lighting, Light sources and illumination, Laser processing

Read Abstract +

Proceedings Article | 23 September 2008 Paper

Predicting solutions toward improved high power white LED light sources: a combined theoretical and experimental study

C. Sommer, F. Wenzl, L. Kuna, E. Zinterl, J. Krenn, P. Hartmann, P. Pachler, M. Schweighart, S. Tasch

Proceedings Volume 7103, 710309 (2008) https://doi.org/10.1117/12.797453

KEYWORDS: Light emitting diodes, Sensors, Light sources, Silicon, Particles, Light scattering, Blue light emitting diodes, Scattering, Goniophotometry, Light

Read Abstract +

Proceedings Article | 14 May 2008 Paper

Rapid prototyping of micro-optics on organic light emitting diodes and organic photo cells by means of two-photon 3D lithography and nano-imprint lithography

V. Satzinger, V. Schmidt, L. Kuna, C. Palfinger, R. Inführ, R. Liska, J. Krenn

Proceedings Volume 6992, 699217 (2008) https://doi.org/10.1117/12.781129

KEYWORDS: Waveguides, Lithography, Nanoimprint lithography, Glasses, Organic light emitting diodes, Photonics, Ultraviolet radiation, Refractive index, Microopto electromechanical systems, Computer aided design

Read Abstract +

Proceedings Article | 28 April 2008 Paper

Novel integrated organic sensor system for the detection of oxygen and pH

Elke Kraker, Anja Haase, Bernhard Lamprecht, Georg Jakopic, J. Krenn, Christian Konrad, Stefan Köstler

Proceedings Volume 7003, 70031D (2008) https://doi.org/10.1117/12.780938

KEYWORDS: Sensors, Oxygen, Organic light emitting diodes, Polarizers, Photodiodes, Luminescence, Optical filters, Polarization, Quantum efficiency, Electrodes

Read Abstract +