Research experience
-
Jan 2010
Research: Université Paris Diderot - Paris 7
Université Paris Diderot - Paris 7France · Paris -
Jan 2009
Research: Slovak Academy of Science
Slovak Academy of SciencesSlovakia · Košice -
Jan 2009
Research: University at Buffalo, The State University of New York
University at Buffalo, The State University of New YorkUSA · Buffalo -
Jan 2009
Research: Semiconductor Physics Institute
Semiconductor Physics InstituteLithuania · Vilnius -
Jan 2009
Research: Vilniaus Universitetas
Vilniaus Universitetas · Taikomųjų mokslų institutasLithuania · Vilnius -
Jan 2008–
Dec 2010Research: Centre national de la recherche scientifique
Centre national de la recherche scientifiqueFrance · Paris -
Jan 2008
Research: Université de Neuchâtel
Université de NeuchâtelSwitzerland · Neuchâtel -
Jan 2006
Research: Helmholtz-Zentrum Dresden-Rossendorf
Helmholtz-Zentrum Dresden-RossendorfGermany · Dresden -
Jan 2005
Research: The University of Sheffield
The University of Sheffield · Department of Physics and AstronomyUnited Kingdom · Sheffield -
Jan 2002
Research: Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie
Max-Born-Institut für Nichtlineare Optik und KurzzeitspektroskopieGermany · Berlin -
Jan 2001–
Dec 2002Research: Chestnut Hill College
Chestnut Hill CollegeUSA · Boston -
Jan 2000
Research: IST Austria
IST AustriaAustria · Klosterneuburg -
Jan 2000
Research: Macalester College
Macalester CollegeUSA · Saint Paul -
Jan 1998
Research: Technische Universitat Munchen
Technische Universitat MunchenGermany · München -
Jan 1998–
Dec 2003Research: Universität Wien
Universität WienAustria · Vienna -
Jan 1964–
Dec 2012Research: Technische Universität Wien
Technische Universität Wien · Center for Micro and NanostructuresAustria · Vienna
Other
-
LanguagesGerman, English
-
Scientific MembershipsÖPG - Austrian Physical Society, GMe - Gesellschaft für Mikro- und Nanoelektronik
-
Other Interestsof course
Publications (475) View all
-
Article: Insulator, semiclassical oscillations and quantum Hall liquids at low magnetic fields.
[show abstract] [hide abstract]
ABSTRACT: Magneto-transport measurements are performed on two-dimensional GaAs electron systems to probe the quantum Hall (QH) effect at low magnetic fields. Oscillations following the Shubnikov-de Haas (SdH) formula are observed in the transition from the insulator to QH liquid when the observed almost temperature-independent Hall slope indicates insignificant interaction correction. Our study shows that the existence of SdH oscillations in such a transition can be understood based on the non-interacting model.Journal of Physics Condensed Matter 09/2012; 24(40):405601. · 2.55 Impact Factor -
Article: Detectivity enhancement in quantum well infrared photodetectors utilizing a photonic crystal slab resonator.
[show abstract] [hide abstract]
ABSTRACT: We characterize the performance of a quantum well infrared photodetector (QWIP), which is fabricated as a photonic crystal slab (PCS) resonator. The strongest resonance of the PCS is designed to coincide with the absorption peak frequency at 7.6 µm of the QWIP. To accurately characterize the detector performance, it is illuminated by using single mode mid-infrared lasers. The strong resonant absorption enhancement yields a detectivity increase of up to 20 times. This enhancement is a combined effect of increased responsivity and noise current reduction. With increasing temperature, we observe a red shift of the PCS-QWIP resonance peak of -0.055 cm(-1)/K. We attribute this effect to a refractive index change and present a model based on the revised plane wave method.Optics Express 02/2012; 20(5):5622-8. · 3.59 Impact Factor -
Article: Extraordinary transmission in metal hole array photonic crystal hybrid structures
Optics Express 01/2012; 20(15):17174-17182. · 3.59 Impact Factor -
Article: THz quantum cascade lasers with wafer bonded active regions
Optics Express 01/2012; 20(21):23832-23837. · 3.59 Impact Factor -
Article: Asymmetrically Doped GaAs/AlGaAs Double-Quantum-Well Structure for Voltage-Tunable Infrared Detection
Japanese Journal of Applied Physics 01/2012; 51:074004. · 1.06 Impact Factor
