Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2017Chip-on-the-tip compact flexible endoscopic epifluorescence video-microscope for in-vivo imaging in medicine and biomedical research
Matz, G.; Messerschmidt, B.; Göbel, W.; Filser, S.; Betz, C.S.; Kirsch, M.; Uckermann, O.; Kunze, M.; Flämig, S.; Ehrhardt, A.; Irion, K.-M.; Haack, M.; Dorostkar, M.M.; Herms, J.; Gross, H.
Journal Article
2005Automatic PMD compensator in a 160-Gb/s OTDM transmission over deployed fiber using RZ-DPSK modulation format
Kieckbusch, S.; Ferber, S.; Rosenfeldt, H.; Ludwig, R.; Boerner, C.; Ehrhardt, A.; Brinkmeyer, E.; Weber, H.-G.
Journal Article
2004Adaptive PMD compensator in 160Gb/s DPSK transmission over installed fiber
Kieckbusch, S.; Ferber, S.; Rosenfeldt, H.; Ludwig, R.; Boerner, C.; Ehrhardt, A.; Brinkmeyer, E.; Weber, H.G.
Conference Paper
2004Extension of all-optical network-transparent domains based on normalized transmission sections
Hanik, N.; Ehrhardt, A.; Gladisch, A.; Peucheret, C.; Jeppesen, P.; Molle, L.; Freund, R.; Caspar, C.
Journal Article
2003Increased susceptibility to the tobacco carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone in transgenic mice overexpressing c-myc and epidermal growth factor in alveolar type II cells
Ehrhardt, A.; Bartels, T.; Klocke, R.; Paul, D.; Halter, R.
Journal Article
2003Verfahren und Vorrichtung zur Detektion von Porositaet erzeugenden Gasen in Schweissverbindungen
Ehrhardt, A.; Beersieck, J.; Behler, K.; Hausen, O.
Patent
2003Verfahren zur Verbindung von Fuegepartner
Ehrhardt, A.; Behler, K.
Patent
2002Establishment and characterization of immortal hepatocytes derived from various transgenic mouse lines
Klocke, R.; Gómez-Lechón, M.J.; Ehrhardt, A.; Mendoza-Figueroa, T.; Donato, M.T.; López-Revilla, R.; Castell, J.V.; Paul, D.
Journal Article
2001Development of pulmonary bronchiolo-alveolar adenocarcinomas in transgenic mice overexpressing murine c-myc and epidermal growth factor in alveolar type II pneumocytes
Ehrhardt, A.; Bartels, T.; Geick, A.; Klocke, R.; Paul, D.; Halter, R.
Journal Article
2001Simplified design approach of reliable transparent optical networks
Breuer, D.; Ehrhardt, A.; Foisel, H.-M.; Gladisch, A.; Hanik, N.; Jäger, M.; Neumann, W.; Rocks, M.; Staudemeyer, B.; Bachus, E.-J.; Caspar, C.; Rohde, M.; Schmidt, F.; Schulze, E.; Walf, G.
Journal Article
2001Uteroglobin promoter-targeted c-MYC expression in transgenic mice cause hyperplasia of Clara cells and malignant transformation of T-lymphoblasts and tubular epithelial cells
Geick, A.; Redecker, P.; Ehrhardt, A.; Klocke, R.; Paul, D.; Halter, R.
Journal Article
2000PMD compensation in 10Gbit-s NRZ field experiment using polarimetric error signal
Rosenfeldt, H.; Ulrich, R.; Feiste, U.; Ludwig, R.; Weber, H.G.; Ehrhardt, A.
Journal Article
1999Verfahren und Vorrichtung zur Erhoehung der Prozessstabilitaet bei der Lasermaterialbearbeitung
Ehrhardt, A.; Scholl, M.; Henning, T.; Frohn, W.
Patent
1998Etablierung transgener Mausmodelle für humane Lungenkarzinome
Ehrhardt, A.
Dissertation
1998A tunable femtosecond modelocked semiconductor laser for applications in OTDM-systems
Ludwig, R.; Diez, S.; Ehrhardt, A.; Kuller, L.; Pieper, W.; Weber, H.G.
Journal Article
1998Verfahren zum Fuegen von Werkstuecken mit Hochenergiestrahlung und Werkstueck aus strangpressbarer metallischer Legierung
Ehrhardt, A.; Behler, K.
Patent
1997Flexibles Laserstrahlschweißen von Aluminiumlegierungen für den innovativen Leichtbau
Ehrhardt, A.; Frohn, W.; Behler, K.; Poprawe, R.; Sonsino, C.M.; Ritter, W.; Frielink, R.
Conference Paper
199610 GHz all-optical clock recovery using a mode-locked semiconductor laser in a 40 Gbit/s, 100-km transmission experiment
Ludwig, R.; Pieper, W.; Jahn, E.; Agrawal, N.; Ehrhardt, A.; Kuller, L.; Weber, H.G.
Conference Paper
199640 Gbit/s demultiplexing experiment with 10 GHz all-optical clock recovery using a modelocked semiconductor laser
Ludwig, R.; Ehrhardt, A.; Pieper, W.; Jahn, E.; Agrawal, N.; Ehrke, H.-J.; Kuller, L.; Weber, H.G.
Journal Article
1996Characterization of an all-optical clock recovery operating in excess of 40 Gbit/s
Ehrhardt, A.; Ludwig, R.; Pieper, W.; Jahn, E.; Weber, H.G.
Conference Paper
1996Optical time-domain demultiplexing techniques using semiconductor laser amplifiers
Weber, H.G.; Agrawal, N.; Ehrhardt, A.; Ehrke, H.J.; Eiselt, M.; Jahn, E.; Ludwig, R.; Pieper, W.; Schnabel, R.
Conference Paper
1995Turn-key-ready wavelength-, repetition rate- and pulsewidth-tunable femtosecond hybrid modelocked semiconductor laser
Ludwig, R.; Ehrhardt, A.
Journal Article
199418 GHz all-optical frequency locking and clock recovery using a self-pulsating two-section DFB-laser
Feiste, U.; As, D.J.; Ehrhardt, A.
Journal Article
1994200 fs optical pulses from a wavelength, repetition rate and pulse width tunable hybrid mode locked semiconductor laser
Ehrhardt, A.; Ludwig, R.
Conference Paper
1994Cross talk in a fiber-loop optical buffer
Pieper, W.; Eiselt, M.; Ehrhardt, A.; Grosskopf, G.; Langenhorst, R.; Weber, H.G.
Conference Paper
1994Investigation of crosstalk interference in a fibre loop optical buffer
Pieper, W.; Eiselt, M.; Grosskopf, G.; Langenhorst, R.; Ehrhardt, A.; Weber, H.G.
Journal Article
1994Investigations on the stability of an all-optically extracted clock at 18 GHz using a selfpulsating DFB-laser
Feiste, U.; As, D.J.; Ehrhardt, A.; Mohrle, M.; Franke, D.
Conference Paper
1993All-optical clock extraction at 18 Gbit/s by a self-pulsating two-section DFB-laser
Ehrhardt, A.; As, D.J.; Feiste, U.
Conference Paper
1993Optical loop mirror with semiconductor laser amplifier: Application as optical correlator
Eiselt, M.; Ehrhardt, A.; Weber, H.G.
Conference Paper
1993Photonic packet switching experiments in a 2*2 switching node incorporating a fiber loop buffer
Eiselt, M.; Ehrhardt, A.; Grosskopf, G.; Ludwig, R.; Pieper, W.; Schnabel, R.; Weber, H.G.
Conference Paper
1993Semiconductor laser amplifier as optical switching gate
Ehrhardt, A.; Eiselt, M.; Grossopf, G.; Kuller, L.; Ludwig, R.; Pieper, W.; Schnabel, R.; Weber, H.G.
Journal Article
1991Investigations of emitter characteristics of LPE GaAs solar cells
Welter, H.; Ehrhardt, A.; Wettling, W.; Bett, A.W.
Conference Paper
1991Optimization of LPE-grown high efficiency GaAs solar cells
Cardona, S.; Ehrhardt, A.; Lutz, F.; Welter, H.; Wettling, W.; Bett, A.W.
Conference Paper
1991Transient photoluminescence decay study of minority carrier lifetime in GaAs heteroface solar cell structures
Ehrhardt, A.; Wettling, W.; Bett, A.W.
Journal Article
1990Dünnschichtsolarzellen aus Galliumarsenid
Bronner, W.; Ehrhardt, A.; Lanyi, P.; Lutz, F.; Welter, H.; Yavas, O.; Schetter, C.; Wettling, W.; Bett, A.W.; Nguyen, T.N.
Conference Paper
1990Transient photoluminescence decay investigations of LPE GaAs heteroface solar cells
Ehrhardt, A.; Lutz, F.; Wettling, W.; Bett, A.W.
Conference Paper
1989Homogeneity evaluation of GaAs LPE solar cell processing by photoluminescence mapping and photoluminescence decay measurements
Ehrhardt, A.; Krawczyk, S.K.; Schohe, K.; Wettling, W.; Bett, A.W.
Conference Paper