Zobrazeno 1 - 10
of 12
pro vyhledávání: '"W T Wenckebach"'
Autor:
W. T. Wenckebach, R. W. van Es, Ekkehard Schomburg, J. N. Hovenier, A.F.G. van der Meer, Florian Klappenberger, Guido Knippels, Stephan Winnerl, Tjeerd O. Klaassen, M. Kratschmer
Publikováno v:
IEE Proceedings - Optoelectronics. 149:99-104
The possibilities and restrictions for the use of the simple experimental method differential electronic gating (DEG)-developed to determine the shape of repetitive subnanosecond THz pulses in the presence of a large jitter in the trigger signal are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26b7e4c181e62ce6298cd8764cc2112b
https://doi.org/10.1049/ip-opt:20020260
https://doi.org/10.1049/ip-opt:20020260
Publikováno v:
Journal of Physics: Condensed Matter. 6:7461-7468
We propose a method to achieve mode-locking in a p-germanium inter-valence-band laser by modulating its gain. This is done by applying an additional radiofrequency (RF) electric field parallel to the applied magnetic field. Due to the acceleration by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1102fedf834810793375943399c5649a
https://doi.org/10.1088/0953-8984/6/36/025
https://doi.org/10.1088/0953-8984/6/36/025
Autor:
W. T. Wenckebach
Publikováno v:
Applied Magnetic Resonance. 34
The present paper presents a tutorial on the solid effect (SE) as a mechanism for dynamic nuclear polarization (DNP). DNP is a method to orient nuclear spins in a solid. For this purpose, this solid is doped with a small amount of unpaired electron s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc0fcf64b45651c8290d58d45b5f4c04
https://doi.org/10.1007/s00723-008-0121-9
https://doi.org/10.1007/s00723-008-0121-9
Publikováno v:
Semiconductor Science and Technology. 9:648-650
The efficiency of p-Ge hot-hole lasers is shown to depend on the shape of the sample. This is due to the inhomogeneity of the electric field caused by the Hall effect. To estimate the effect on gain, Monte Carlo (MC) simulations are performed for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2312d9df3f1c06741798513c9bfe5db9
https://doi.org/10.1088/0268-1242/9/5s/067
https://doi.org/10.1088/0268-1242/9/5s/067
Electrically controlled gain modulation for active mode locking of far-infrared p-Ge hot hole lasers
Autor:
Raymond N. Schouten, R.C. Strijbos, J. N. Hovenier, Andrei V. Muravjov, W. T. Wenckebach, J. G. S. Lok, S.G. Pavlov, V.N. Shastin, J. H. Blok
Publikováno v:
Conference Digest. 15th IEEE International Semiconductor Laser Conference.
The feasibility of achieving active mode locking in p-Ge hot-hole far-infrared lasers by gain modulation is investigated. The gain is modulated locally by applying an additional radio frequency electric field along the magnetic field direction.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09d867bee867973d8bf7bfc5468da9e2
https://doi.org/10.1109/islc.1996.553748
https://doi.org/10.1109/islc.1996.553748
Autor:
J. Niels Hovenier, Tjeerd O. Klaassen, Andrei V. Muravjov, W. T. Wenckebach, M. Carmen Diez, S.G. Pavlov, V.N. Shastin
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques, 48 (4)
The results of a detailed study of the optical output of the p-Ge hot hole terahertz laser for pulsed-locked, as well as for mode-locked operation, is reported in this paper. The recently developed technique to achieve active mode locking is describe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e644add0578360f41677f00ad878bf2a
http://resolver.tudelft.nl/uuid:706ea7bd-3664-4245-a7aa-3cf4ae5b95b2
http://resolver.tudelft.nl/uuid:706ea7bd-3664-4245-a7aa-3cf4ae5b95b2
Publikováno v:
Hot Carriers in Semiconductors ISBN: 9781461380351
The small-signal gain of p-Ge far-infrared lasers (50cm−1 < v < 140cm−1), operated in crossed electric (E = 0.3 − 5kVcm−1) and magnetic (B = 0.3 − 5T) fields at helium temperature, depends strongly on the magnitude and direction of the elec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1da029a8b32ddce41d9aa177148cbd8
https://doi.org/10.1007/978-1-4613-0401-2_144
https://doi.org/10.1007/978-1-4613-0401-2_144
Publikováno v:
Journal of Physics E: Scientific Instruments. 20:648-652
An apparatus has been developed for obtaining high nuclear polarisation by means of microwave-induced optical nuclear polarisation. In this recent variety of dynamic nuclear polarisation (DNP), the sample is doped with centres that are diamagnetic in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85467c4e039c67d37793286e94c82d49
https://doi.org/10.1088/0022-3735/20/6/015
https://doi.org/10.1088/0022-3735/20/6/015
Publikováno v:
Journal of Physics C: Solid State Physics. 18:421-441
Experimental evidence is presented for the occurrence of a nuclear dipolar magnetic ordering of the proton spins in Ca(OH)2 at positive spin temperature in a high externally applied magnetic field H0. The ordering was produced by dynamic nuclear pola
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8819265e41b672a2ef518378f0ac2d92
https://doi.org/10.1088/0022-3719/18/2/020
https://doi.org/10.1088/0022-3719/18/2/020
Publikováno v:
Journal of Physics: Condensed Matter. 1:8535-8541
Pulsed electron spin resonance (ESR) experiments are presented to study hole burning in the ESR spectrum of p-type Si:B. The results are used to determine the electron spin-lattice relaxation process and to prove that spectral diffusion is absent. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0b694152e122eb3a09323bd900db85f
https://doi.org/10.1088/0953-8984/1/44/024
https://doi.org/10.1088/0953-8984/1/44/024