Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Stefan Hugger"'
Autor:
Ralf Ostendorf, Lorenz Butschek, Stefan Hugger, Frank Fuchs, Quankui Yang, Jan Jarvis, Christian Schilling, Marcel Rattunde, André Merten, Jan Grahmann, Dusan Boskovic, Thorsten Tybussek, Klaus Rieblinger, Joachim Wagner
Publikováno v:
Photonics, Vol 3, Iss 2, p 28 (2016)
External-cavity quantum cascade lasers (EC-QCL) are now established as versatile wavelength-tunable light sources for analytical spectroscopy in the mid-infrared (MIR) spectral range. We report on the realization of rapid broadband spectral tuning wi
Externí odkaz:
https://doaj.org/article/88a0de36dba14405b95774cce43a3172
Publikováno v:
MOEMS and Miniaturized Systems XXII.
Autor:
Stefan Hugger, Christian Schilling, Ana Radosavljević, Sanja Radosavljevic, Ralf Ostendorf, Bart Kuyken, Gunther Roelkens
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 25:1-7
Quantum cascade lasers (QCLs) are essential components for mid-infrared optical spectroscopy. Currently, widely tunable QCLs are using an external diffraction grating to tune the laser wavelength. In this paper we present a compact tunable QCL that i
Autor:
C. Schilling, H. Heußen, Lutz Kirste, Rachid Driad, Ralf Ostendorf, Quankui Yang, Stefan Hugger, Rolf Aidam
Publikováno v:
Journal of Crystal Growth. 513:1-5
Design and growth characteristics of broadly tunable hetero-cascading quantum cascade lasers are discussed. We show the influence of electric field variation, and interface roughness on the gain spectra. Interface roughness is shown to play an import
Autor:
André Dreyhaupt, Ralf Ostendorf, Jan Grahmann, Stefan Hugger, André Merten, Christian Schilling, Markus Schwarzenberg, Richard Schroedter, Thomas Graßhoff
Publikováno v:
tm - Technisches Messen. 86:131-143
Zusammenfassung Breitbandig durchstimmbare Infrarotstrahlung im mittleren Wellenlängenbereich von etwa 3 bis 10 µm bzw. 1000 bis 3200 Wellenzahlen kann effizient zur Spektroskopie gasförmiger, flüssiger oder fester Stoffe und Gemische verwendet w
Autor:
Bernard Lendl, Paweł Leszcz, Sanja Radosavljevic, Stefan Hugger, Nuria Teigell Beneitez, Dominik Wacht, Gunther Roelkens, Jeroen Missinne, Bettina Baumgartner
Publikováno v:
Optics Express
OPTICS EXPRESS
OPTICS EXPRESS
A novel platform based on evanescent wave sensing in the 6.5 to 7.5 mu m wavelength range is presented with the example of toluene detection in an aqueous solution. The overall sensing platform consists of a germanium-on-silicon waveguide with a func
Autor:
André Dreyhaupt, Jan Grahmann, Stefan Hugger, Marko Haertelt, Markus Schwarzenberg, Ralf Ostendorf, Marcel Rattunde, Lorenz Butschek, Yuri V. Flores, André Merten, Christian Schilling
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We present miniaturized MOEMS-based external-cavity (EC)-QCLs: A non-resonant, versatile version for setting arbitrary emission wavelengths or wavelength trajectories as a function of time with drive frequencies up to a few tens of Hz and a fast, res
Autor:
Christian Schilling, Marko Haertelt, Ralf Ostendorf, André Dreyhaupt, Marcel Rattunde, Markus Schwarzenberg, André Merten, Lorenz Butschek, Stefan Hugger, Jan Grahmann
Publikováno v:
Quantum Sensing and Nano Electronics and Photonics XVI
The combination of broadly tunable quantum cascade laser chips in an external cavity (EC-QCL) with a micro- electro-mechanical system (MEMS) scanner with integrated diffraction grating as wavelength-selective element allows for the development of ext
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::099c17300a66f1d21fca502f8d7ff93e
Autor:
Marcel Rattunde, Yuri V. Flores, André Dreyhaupt, Lorenz Butschek, André Merten, Ralf Ostendorf, Marko Haertelt, C. Schilling, Jan Grahmann, Markus Schwarzenberg, Stefan Hugger
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
The combination of broadband quantum cascade lasers (QCLs) with a micro-electro-mechanical system (MOEMS) scanner with integrated diffraction grating as a wavelength-selective and optical feedback providing element enables the realization of compact,
Autor:
J. Jarvis, David J. M. Stothard, Markus Schwarzenberg, Lorenz Butschek, Jan Grahmann, Marcin Ratajczyk, André Merten, John Macarthur, Stefan Hugger, Marko Haertelt, Ralf Ostendorf, Christopher Carson, Matthew S. Warden
Publikováno v:
Infrared Technology and Applications XLIV.
Here we report our recent achievements towards a compact, portable, handheld device for contactless real-time detection and identification of explosives and hazardous substances via reflectance spectroscopy in the 7.5 μm – 10 μm spectral region.