Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Wolfgang 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
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