Proceedings ArticleDOI
Terahertz photonic crystals
Alexander Benz,Gernot Fasching,C. Deutsch,Aaron Maxwell Andrews,Karl Unterrainer,Pavel Klang,Werner Schrenk,Gottfried Strasser +7 more
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TLDR
In this article, photonic crystal (PC) resonators are integrated into the active region of terahertz quantum cascade laser emitting around 2.7 THz. The PC acts as frequency selective mirror and allows the tuning of the emission frequency throughout the entire gain region of the active zone.Abstract:
The integration of photonic crystal (PC) resonators into the active region of terahertz quantum cascade lasers emitting around 2.7 THz is presented. The PC acts as frequency selective mirror and allows the tuning of the emission frequency throughout the entire gain region of the active zone. The PC and the gain region are embedded in a double-metal wave guide.read more
Citations
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Terahertz photonic crystal microfluidic sensors
Acosta Silveira,Laura Cecilia +1 more
TL;DR: In this paper, a photonic crystal (PC) based structure operating at the terahertz spectral region is designed for continuous flow characterization of liquids and vapors, and the same type of structure is then slightly altered with a defect layer and its effect is studied.
References
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Journal ArticleDOI
Terahertz semiconductor-heterostructure laser
R. Kohler,Alessandro Tredicucci,Fabio Beltram,Harvey E. Beere,Edmund H. Linfield,Giles Davies,David A. Ritchie,Rita Claudia Iotti,Fausto Rossi +8 more
TL;DR: A monolithic terahertz injection laser that is based on interminiband transitions in the conduction band of a semiconductor (GaAs/AlGaAs) heterostructure is reported, which is very promising for extending the present laser concept to continuous-wave and high-temperature operation, which would lead to implementation in practical photonic systems.
Terahertz semiconductor heterostructure laser
R. Kohler,Alessandro Tredicucci,Fabio Beltram,Harvey E. Beere,Edmund H. Linfield,Giles Davies,David A. Ritchie,Rita Claudia Iotti,Fausto Rossi +8 more
TL;DR: In this article, a monolithic terahertz injection laser that is based on interminiband transitions in the conduction band of a semiconductor (GaAs/AlGaAs) heterostructure is presented.
Journal ArticleDOI
3.4-THz quantum cascade laser based on longitudinal-optical-phonon scattering for depopulation
TL;DR: In this article, a quantum cascade laser at λ=87.2 µm was developed for electron depopulation at 3.44 THz and 14.2 meV photon energy.
Journal ArticleDOI
Real-time terahertz imaging over a standoff distance (>25meters)
TL;DR: In this paper, the authors demonstrate the use of a terahertz quantum cascade laser (QCL) for real-time imaging in transmission mode at a standoff distance of 25 meters.
Journal ArticleDOI
Influence of doping on the performance of terahertz quantum-cascade lasers
Alexander Benz,Gernot Fasching,Aaron Maxwell Andrews,M. Martl,Karl Unterrainer,Tomas Roch,W. Schrenk,S. Golka,Gottfried Strasser +8 more
TL;DR: In this article, the effects of the doping concentration on the performance of a set of terahertz quantum-cascade lasers emitting around 2.75THz were analyzed and a linear dependency of the threshold current density on the doping was observed.