Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Axel Roggenbuck"'
Autor:
Anuar de Jesus Fernandez Olvera, Axel Roggenbuck, Katja Dutzi, Nico Vieweg, Hong Lu, Arthur C. Gossard, Sascha Preu
Publikováno v:
Photonics, Vol 6, Iss 1, p 15 (2019)
A theoretical model for the responsivity and noise-equivalent power (NEP) of photoconductive antennas (PCAs) as coherent, homodyne THz detectors is presented. The model is validated by comparison to experimental values obtained for two ErAs:InGaAs PC
Externí odkaz:
https://doaj.org/article/9a640641fcaf4ac0b63f14b7411a7aff
To date, exploiting the full bandwidth of state-of-the-art InGaAs photomixers for generation and detection of continuous-wave (CW) THz radiation (typ. ~50 GHz to ~3 THz) required complex and costly external-cavity diode lasers with motorized resonato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bded0c870f6f638097be9d4a6c79444a
Autor:
I. Cámara Mayorga, Joachim Hemberger, Axel Roggenbuck, Markus Grüninger, Komalavalli Thirunavukkuarasu, M. Langenbach, Anselm Deninger
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 35:918-931
We report on the group delay observed in continuous-wave terahertz spectroscopy based on photomixing with phase-sensitive homodyne detection. We discuss the different contributions of the experimental setup to the phase difference \Delta\phi(\nu) bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e17a95d9422f1ec07a48d0c7f18dcfd
https://doi.org/10.1007/s10762-014-0098-4
https://doi.org/10.1007/s10762-014-0098-4
Autor:
Sascha Preu, Hong Lu, Nico Vieweg, Katja Dutzi, Axel Roggenbuck, Anuar de Jesus Fernandez Olvera, Arthur C. Gossard
Publikováno v:
Photonics, Vol 6, Iss 1, p 15 (2019)
Photonics
Volume 6
Issue 1
Photonics
Volume 6
Issue 1
A theoretical model for the responsivity and noise-equivalent power (NEP) of photoconductive antennas (PCAs) as coherent, homodyne THz detectors is presented. The model is validated by comparison to experimental values obtained for two ErAs:InGaAs PC
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0148602276fb8b399ca97e71e824e8c5
https://doi.org/10.3390/photonics6010015
https://doi.org/10.3390/photonics6010015
Autor:
S. Luttjohann, R. Harig, Thorsten Göbel, Simon Nellen, Christian Hepp, Axel Roggenbuck, Anselm Deninger, M. Jorger
Publikováno v:
2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
We present a demonstration system for gas analysis based on cw-terahertz absorption spectroscopy. The setup combines tunable 1.5 μm distributed-feedback (DFB) lasers, InGaAs photomixers and a multipass absorption cell into a high-resolution spectrom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0440d39788ea56c6cca0058380facf65
https://doi.org/10.1109/irmmw-thz.2016.7758344
https://doi.org/10.1109/irmmw-thz.2016.7758344
Autor:
W. von Spiegel, Anselm Deninger, Fabian Friederich, Hartmut G. Roskos, Peter Haring Bolívar, Frank Lison, C. am Weg, Gunnar Spickermann, Axel Roggenbuck
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 58:2022-2026
We present an electrooptic (EO) terahertz imaging technique providing a demodulating detector array for phase-sensitive multipixel terahertz detection. The terahertz radiation from a quartz-stabilized microelectronic emitter is mixed with the synchro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0f9ad2f32653a337440f17193cb25fc
https://doi.org/10.1109/tmtt.2010.2050390
https://doi.org/10.1109/tmtt.2010.2050390
Autor:
Anselm Deninger, Axel Roggenbuck, Peter Meißner, Francois-Xavier Laroche, Thorsten Göbel, Daniel Schönherr, Hans L. Hartnagel
Publikováno v:
tm - Technisches Messen. 75:623-630
Zusammenfassung Die optische Erzeugung von Dauerstrich-Terahertz Strahlung (engl. continuous-wave terahertz, CW THz) hat sich in den letzten Jahren zu einer zuverlässigen Technik entwickelt. Geringe Kosten und hohe Auflösung sind die Vorteile gegen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7034c2fe05d4d06894487689a475d504
https://doi.org/10.1524/teme.2008.0901
https://doi.org/10.1524/teme.2008.0901
Autor:
Joachim Hemberger, Axel Roggenbuck, Markus Grüninger, Komalavalli Thirunavukkuarasu, Holger Schmitz, E. Vidal, M. Langenbach
Photomixing of two near-infrared lasers is well established for continuous-wave terahertz spectroscopy. Photomixing of three lasers allows us to measure at three terahertz frequencies simultaneously. Similar to Fourier spectroscopy, the spectral info
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ca087af180820d1e85f801f64cfa699
http://arxiv.org/abs/1410.0648
http://arxiv.org/abs/1410.0648
Autor:
Holger Schmitz, Komalavalli Thirunavukkuarasu, M. Langenbach, Ernesto Vidal, Markus Grüninger, Joachim Hemberger, Axel Roggenbuck
Publikováno v:
2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47fbe4e688c1b3dca038ba78144ce449
https://doi.org/10.1109/irmmw-thz.2014.6956316
https://doi.org/10.1109/irmmw-thz.2014.6956316
Autor:
Markus Grüninger, I. Cámara Mayorga, M. Langenbach, Anselm Deninger, Axel Roggenbuck, Joachim Hemberger, Komalavalli Thirunavukkuarasu
Publikováno v:
2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We report on the implementation of a continuous-wave terahertz spectrometer into a magneto-cryostat. The integrated setup for THz investigations down to 3 K and in magnetic fields up to 8 T overcomes the drawbacks of windows or additional focusing co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20daf262d66d341dfea5eb989e14553a
https://doi.org/10.1109/irmmw-thz.2013.6665736
https://doi.org/10.1109/irmmw-thz.2013.6665736