Zobrazeno 1 - 10
of 107
pro vyhledávání: '"W. Ruehle"'
Autor:
Nils C. Gerhardt, Falko Hoehnsdorf, C. Ellmers, Wolfgang Stolz, Henning Riechert, Anton Yurevitch Egorov, Joerg Koch, Wolfgang W. Ruehle, Martin R. Hofmann, B. Borchert, Anke Wagner
Publikováno v:
SPIE Proceedings.
The emission dynamics of an optically pumped 1.3 +m (GaIn)(NAs)/GaAs vertical-cavity surface-emitting laser is investigated. We achieve room-temperature operation at 1285 nm with a low optical pumping threshold and fast emission dynamics: A minimum p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2fed9bed1e7c1968e6278558d2e8f4e1
https://doi.org/10.1117/12.432573
https://doi.org/10.1117/12.432573
Autor:
Martin R. Hofmann, C. Ellmers, Wolfgang W. Ruehle, Denis Karaiskaj, Simone Leu, Wolfgang Stolz
Publikováno v:
SPIE Proceedings.
Vertical-cavity surface-emitting lasers are optimized for fast intrinsic emission dynamics. The structure contains four times three quantum wells in a 2 (lambda) sin-type cavity. We have realized it using the strain-compensated (GaIn)As/Ga(PAs) mater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6352749d7380c18628feeb4d845ee655
https://doi.org/10.1117/12.347088
https://doi.org/10.1117/12.347088
Autor:
Siegmar Roth, Wolfgang K. Maser, Andreas Werner, Wolfgang W. Ruehle, L. Akselrod, M. Kaiser, Hugh J. Byrne
Publikováno v:
SPIE Proceedings.
Picosecond time resolved photoluminescence and photoconductivity measurements are performed to investigate the influence of high intensity illumination on the properties of Fullerene crystals. A highly nonlinear dependence of both the photoluminescen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9158249f95d8054f0f3b77cfa40332b1
https://doi.org/10.1117/12.196125
https://doi.org/10.1117/12.196125
Autor:
Gustaaf Borghs, Holger T. Grahn, Dietrich Bertram, Herbert Lage, Wolfgang W. Ruehle, Chris Van Hoof, Jan Genoe
Publikováno v:
SPIE Proceedings.
The electron and hole transport in a triple-barrier resonant tunneling diode are investigated using photoluminescence spectroscopy on a picosecond and nanosecond time scale. Time- resolved populations are created by exciting only the GaAs contact lay
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7064de5263aa70d66f4c4d67175052cf
https://doi.org/10.1117/12.175904
https://doi.org/10.1117/12.175904
Publikováno v:
SPIE Proceedings.
The injection of photoexcited carriers into higher subbands by resonant tunneling in GaAs- AlAs superlattices is directly observed by photoluminescence spectroscopy. For a conduction subband spacing larger than the longitudinal optical phonon energy,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59141f0afacc43f6b62ee6e895464381
https://doi.org/10.1117/12.137612
https://doi.org/10.1117/12.137612
Publikováno v:
SPIE Proceedings.
Time resolved luminescence experiments performed on GaA1As-GaAs-A1As nonsymmetric modulation n-doped thick Quantum Wells show an atypical behaviour regarding similar but symmetric ( GaA1As-GaAs-GaA1As ) Quantum Wells. In the latter system the lumines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb5ae03fd258aa5584d25bf3fa3669cd
https://doi.org/10.1117/12.24389
https://doi.org/10.1117/12.24389
Publikováno v:
Ultrafast Laser Probe Phenomena in Bulk and Microstructure Semiconductors III.
We present experimental results for the thermalization of hot electron-hole plasma in bulk GaAs, AlGa1_As, GaAs/A1GaAs quantum wells and GaAs/AlAs superlattices. The results are compared with calculations of the thermalization of an electron-hole pla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::487d55d14860dfbfa83d1c480f1b1e91
https://doi.org/10.1117/12.20714
https://doi.org/10.1117/12.20714
Publikováno v:
SPIE Proceedings.
Electron and hole tunneling transfer processes in asymmetric double quantum well structures are investigated by time-resolved picosecond photoluminescence. Change from nonresonant to resonant tunneling is achieved with a perpendicular eleitric field.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2f6564ad503b9c2aae7e21ef4b567ea
https://doi.org/10.1117/12.20335
https://doi.org/10.1117/12.20335
Publikováno v:
Desalination. 65:171-186
The paper reports of investigations to analyse and solve severe corrosion problems in two 11.500 m 3 /d MSF desalination distillers in operation since 1976. A careful examination of the distiller situation, the operation behaviour and the design feat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1223a40a43f1ddeaa1a92583d50dfcb4
https://doi.org/10.1016/0011-9164(87)90133-0
https://doi.org/10.1016/0011-9164(87)90133-0
Autor:
W. Vassmer, Ernst Petersen, Elis Essen-Möller, Otto Schmidt, W. Ruehle, Robert Hantke, H.J. Kreutzmann, H.A. von Guérard, R.J.Th. Meurer, W. Stoeckel, Hans Michaelis, Georg Bohnstedt, M. Menge, Hans Vörner, Giuliano Perondi, G. Calderini, W.W. Stroganoff, Bruno Bosse, P. Bröse, Karl Ernst Laubenburg, Fritz Kermauner, H. Hammerschlag, Arthur Schlossmann, M.M. de Monchy, A. Theilhaber, J. Hagmann, F. Ehrenfreund, H. Raschkes, Paul Jung, Kurt Kamann, Karl Holzapfel, Arthur Stein, Ledwig Pincus, Max Stolz, T. Leisewitz, A. Hartz, S. Gelpke, Hugo Szász, E. Knauer
Publikováno v:
Gynecologic and Obstetric Investigation. 17:1238-1256
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6ef5504e8158141bfb88a1b1806a4e3
https://doi.org/10.1159/000284035
https://doi.org/10.1159/000284035