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- Pavlov, S.G. (author), Hubers, H.W. (author), Hovenier, J.N. (author), Klaassen, T.O. (author), Carder, D.A. (author), Phillips, P.J. (author), Redlich, B. (author), Riemann, H. (author), Zhukavin, R.Kh. (author), Shastin, V.N. (author) journal article 2006
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- Klaassen, M.J.A. (author) report 2006
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- Orlova, E.E. (author), Hovenier, J.N. (author), Klaassen, T.O. (author), Kasalynas, I. (author), Adam, A.J.L. (author), Gao, J.R. (author), Klapwijk, T.M. (author), Williams, B.S. (author), Kumar, S. (author), Hu, Q. (author), Reno, J.L. (author) journal article 2006
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- Klaassen, M.J.A. (author) report 2006
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Gao, J.R. (author), Hovenier, J.N. (author), Yang, Z.Q. (author), Baselmans, J.J.A. (author), Baryshev, A. (author), Hajenius, M. (author), Klapwijk, T.M. (author), Adam, A.J.L. (author), Klaassen, T.O. (author), Williams, B.S. (author), Kumar, S. (author), Hu, Q. (author), Reno, J.L. (author)We report the first demonstration of an all solid-state heterodyne receiver that can be used for high-resolution spectroscopy above 2?THz suitable for space-based observatories. The receiver uses a NbN superconducting hot-electron bolometer as mixer and a quantum cascade laser operating at 2.8?THz as local oscillator. We measure a double...journal article 2005
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Krozer, V. (author), Leone, B. (author), Roskos, H. (author), Löffler, T. (author), Loata, G. (author), Döhler, G. (author), Renner, F. (author), Eckardt, S. (author), Klaassen, T.O. (author), Adam, A. (author)A recent study initiated by the European Space Agency aimed at identifying the most promising technologies to significantly improve on the generation of coherent electromagnetic radiation in the THz regime. The desired improvements include, amongst others, higher output powers and efficiencies at increasingly higher frequencies, wider tunability...conference paper 2004
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Klaassen, T.O. (author), Hovenier, J.N. (author), Fischer, J. (author), Jakob, G. (author), Poglitsch, A. (author), Sternberg, O. (author)A new calorimetric absolute power meter has been developed for THz radiation. This broad band THz power meter measures average power at ambient temperature and pressure, does not use a window, and is insensitive to polarization and time structure of THz radiation. The operation of the power meter is based on the calorimetric method: in order to...conference paper 2004
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Shastin, V.N. (author), Zhukavin, R.K. (author), Orlova, E.E. (author), Pavlov, S.G. (author), Rümmeli, M.H. (author), Hübers, H.W. (author), Hovenier, J.N. (author), Klaassen, T.O. (author), Riemann, H. (author), Bradley, I.V. (author), Van der Meer, A.F.G. (author)Frequency-tunable radiation from the free electron laser FELIX was used to excite neutral phosphorus and bismuth donors embedded in bulk monocrystalline silicon. Lasing at terahertz frequencies has been observed at liquid helium temperature while resonant pumping of odd parity impurity states. The threshold was about two orders of magnitude...journal article 2002
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- Hovenier, J.N. (author), Orlova, E.E. (author), Klaassen, T.O. (author), Wenckebach, W.T. (author) journal article 2002
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- Klaassen, R.G. (author) doctoral thesis 2001
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- Klaassen, G.J. (author), Sloff, C.J. (author) report 2000
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- Niels Hovenier, J. (author), Carmen Diez, M. (author), Klaassen, T.O. (author), Wenckebach, W.T. (author), Muravjov, A.V. (author), Pavlov, S.G. (author), Shastin, V.N. (author) journal article 2000
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- Klaassen, R.G. (author), Snippe, J. (author) book 1999
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Klaassen, R.G. (author), Snippe, Joke (author)Today, the expansion of English education between non-native speakers with different language backgrounds requires insight into the problems encountered in the multicultural classroom and the consequences of English-medium instruction for local students as well as students of other nationalities. As English becomes the language of communication...book 1999
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- Klaassen, G.J. (author) report 1999
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- Barmby, P.W. (author), Dunn, J.L. (author), Bates, C.A. (author), Klaassen, T.O. (author) journal article 1998
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- Barmby, P.W. (author), Dunn, J.L. (author), Bates, C.A. (author), Klaassen, T.O. (author) journal article 1996
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- Planken, P.C.M. (author), van Son, P.C. (author), Hovenier, J.N. (author), Klaassen, T.O. (author), Wenckebach, W.Th. (author), Murdin, B.N. (author), Knippels, G.M.H. (author) journal article 1995
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Klaassen, I.T. (author), Witberg, M.J.J. (author)Achtergrondinformatie bij de derde ideeënprijsvraag van de Eo Wijersstichting: "Verschuivende ruimtelijke kaders, de geschiedenis van het stadsgewestconcept", door Dr. W. Zonneveld "Het stadsgewest Breda", door Drs. Th.A.M. Reijs "Ontwerpen aan Brabant", door Ir. J.A.G.M. Broessbook 1993
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- Klaassen, A.J. (author) doctoral thesis 1992