Zobrazeno 1 - 10
of 239
pro vyhledávání: '"R. Gusten"'
Autor:
Shuang Wu, Roman Adam, A. Förster, Xuemei Zheng, Roman Sobolewski, F. Siebel, Michel Marso, Martin Mikulics, R. Gusten, Peter Kordos, I. Camara
Publikováno v:
Scopus-Elsevier
M. Marsoa,∗, M. Mikulics, R. Adam, S. Wu, X. Zheng, I. Camara, F. Siebe, A. Forster, R. Gusten, P. Kordos and R. Sobolewski Institute of Thin Films and Interfaces, Research Center Julich 52425 Julich, Germany Max-Planck-Institut fur Radioastronomie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd784f1d3676ed7c95b9d70ca8949ba6
https://doi.org/10.12693/aphyspola.107.109
https://doi.org/10.12693/aphyspola.107.109
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 2:393-399
This letter reports on our recent improvements in photomixing technology for the realization of a photonic local oscillator (LO) at 1.05 THz for the Atacama Pathfinder Experiment (APEX) radio telescope. Experiments with state-of-the-art photomixers,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d372e7ea4bd1083f9d093e22bd12ae8c
https://doi.org/10.1109/tthz.2012.2191286
https://doi.org/10.1109/tthz.2012.2191286
Autor:
Daniel Segovia-Vargas, Ivan Camara-Mayorga, R. Gusten, Luis Enrique Garcia-Munoz, B. Andres-Garcia
Publikováno v:
Scopus-Elsevier
An end-flre linear tapered slot antenna is presented in the terahertz band. The operation frequency goes from 0.6THz to 2THz, with symmetric radiation patterns from 1THz to 1.7THz, and gains up to 15dB. The gaussicity of the beam is over 80% in the w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a5101aea40dff64ca7973011bfc774e
https://doi.org/10.2528/pier11012513
https://doi.org/10.2528/pier11012513
Autor:
K. V. Vladimirskii, O. A. Korelov, N. A. Lotova, W. Sieber, Martin Pätzold, R. Gusten, V. N. Obridko, Michael K. Bird
Publikováno v:
Solar Physics. 189:387-398
Long-term scintillation measurements of the solar wind formation zone at solar elongations ranging from 1°–8° (Sun impact parameters: 4–30 R⊙) were recorded using the water maser source IRC-20431 at the wavelength λ=1.35 cm during its annual
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a01fb55b6f9eac2e816cc4a7fea2dcf
https://doi.org/10.1023/a:1005271415011
https://doi.org/10.1023/a:1005271415011
Autor:
J. Mehl, P. Ade, K. Basu, D. Becker, A. Bender, F. Bertoldi, H. Cho, M. Dobbs, N. Halverson, W. Holzapfel, R. Gusten, J. Kennedy, R. Kneissl, E. Kreysa, T. Lanting, A. Lee, M. Lueker, K. Menten, D. Muders, M. Nord
Publikováno v:
Journal of Low Temperature Physics; May2008, Vol. 151 Issue 3/4, p697-702, 6p
Autor:
R. Gusten, Axel Roggenbuck, Joachim Hemberger, Stephanie Schindler, Markus Grüninger, Iván Cámara Mayorga, Anselm Deninger, Holger Schmitz
Publikováno v:
2009 34th International Conference on Infrared, Millimeter, and Terahertz Waves.
We developed an all-fiber-based continuous-wave terahertz spectrometer based on optoelectronic signal generation and detection. The spectrometer has a very high spectral resolution in the MHz range over the whole tuning range from 50 GHz to 1750 GHz.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::496983cba1f933b8e60badc111aa51cc
https://doi.org/10.1109/icimw.2009.5324631
https://doi.org/10.1109/icimw.2009.5324631
Autor:
T. de Graauw, E. Caux, R. Gusten, W. Jellema, W. Luinge, J. Pearson, T. Phillips, R. Schieder, J. Stutzki, K. Wafelbakker, N. Whyborn, K. Wildeman
Publikováno v:
Infrared and Millimeter Waves, Conference Digest of the 2004 Joint 29th International Conference on 2004 and 12th International Conference on Terahertz Electronics, 2004..
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfbdcddaca8d3028d0f55391d2f3af95
https://doi.org/10.1109/icimw.2004.1422223
https://doi.org/10.1109/icimw.2004.1422223
Autor:
Martin Mikulics, H. Stuer, M. Marso, F. Schafer, A. Fox, A. Förster, Peter Kordos, F. Siebe, R. Gusten
Publikováno v:
Scopus-Elsevier
We report on the fabrication and characterization of LT GaAs photomixers for generation of 460 GHz radiation. Resonant cavity structures and devices with various finger contacts geometry are used to enhance the photomixer performance. The DC responsi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c4d6171c128188f0109ec52ed3988ea
https://doi.org/10.1109/asdam.2004.1441203
https://doi.org/10.1109/asdam.2004.1441203
Autor:
A. Förster, Peter Kordos, I. Cámara Mayorga, S. Stanček, Marat Khafizov, R. Gusten, Ernest A. Michael, M. Wolter, M. Marso, X. Li, P. Kováč, Martin Mikulics, Dan Buca, Roman Sobolewski, Shuang Wu, Rudolf Schieder, Hans Lüth
Publikováno v:
Applied physics letters 87, 041106 (2005). doi:10.1063/1.2006983
We report on fabrication and measurement of photomixers based on nitrogen-ion-implanted GaAs. We used energies of 500 keV, 700 keV, and 880 keV to implant N+ ions into GaAs substrates with an ion concentration of similar to 3x10(12) cm(-2). The resul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee81b6e6503c39bbfa6ba13e33bf12a4
https://hdl.handle.net/2128/2015
https://hdl.handle.net/2128/2015
Autor:
R. Gusten, Hans Lüth, Iván Cámara Mayorga, Michel Marso, Martin Mikulics, Peter van der Wal, A. Schmitz, Peter Kordos
Publikováno v:
Millimeter and Submillimeter Detectors for Astronomy II.
We report on photonic technologies developed at the MPI fur Radioastronomy and the Research Center Julich to generate Terahertz Local Oscillator reference signals for use on e.g. ALMA/APEX and SOFIA. The principle is to mix two (NIR) laser colours in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31bee35e97a4b75c4a4663d3fa5e8fa5
https://doi.org/10.1117/12.551754
https://doi.org/10.1117/12.551754