Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2017A multilayered electrospun graft as vascular access for hemodialysis
Radakovic, Dejan; Reboredo, Jenny W.; Helm, M.; Weigel, Tobias; Schürlein, Sebastian; Kupczyk, E.; Leyh, Rainer G.; Walles, Heike; Hansmann, Jan
Journal Article
2015Two-photon quantum well infrared photodetectors below 6 THz
Franke, C.; Walther, Martin; Helm, M.; Schneider, H.
Journal Article, Conference Paper
2014Depth-resolved transport measurements and atom-probe tomography of heterogeneous, superconducting Ge:Ga films
Heera, V.; Fiedler, J.; Naumann, M.; Skrotzki, R.; Kölling, S.; Wilde, L.; Herrmannsdörfer, T.; Skorupa, W.; Wosnitza, J.; Helm, M.
Journal Article
2013InGaAs-based large area photoconductive emitters for 1.55 mum excitation
Xu, M.; Mittendorff, M.; Dietz, R.J.B.; Göbel, T.; Schneider, H.; Helm, M.; Winnerl, S.
Conference Paper
2013Large area photoconductive terahertz emitter for 1.55 µm excitation based on an InGaAs heterostructure
Mittendorff, M.; Xu, M.; Dietz, R.J.B.; Künzel, H.; Sartorius, B.; Schneider, H.; Helm, M.; Winnerl, S.
Journal Article
2013Terahertz generation and detection with InGaAs-based large-area photoconductive devices excited at 1.55 µm
Xu, M.; Mittendorff, M.; Dietz, R.J.B.; Künzel, H.; Sartorius, B.; Göbel, T.; Schneider, H.; Helm, M.; Winnerl, S.
Journal Article
2012Free-electron laser spectroscopy of quantum well exciton dynamics
Schneider, H.; Bhattacharyya, J.; Zybell, S.; Winnerl, S.; Helm, M.; Andrews, A.M.; Strasser, G.; Köhler, K.
Conference Paper
2011Photoluminescence dynamics in GaAs/AlGaAs quantum wells under pulsed intersubband excitation
Zybell, S.; Schneider, H.; Winnerl, S.; Wagner, M.; Köhler, K.; Helm, M.
Journal Article
2010Passively mode-locked Tm,Ho:YAG laser at 2 µm based on saturable absorption of intersubband transitions in quantum wells
Yang, K.J.; Bromberger, H.; Ruf, H.; Schäfer, H.; Neuhaus, J.; Dekorsy, T.; Grimm, C.V.B.; Helm, M.; Biermann, K.; Künzel, H.
Journal Article
2009Large-area terahertz emitters based on GaInAsN
Peter, F.; Winnerl, S.; Schneider, H.; Helm, M.; Köhler, K.
Conference Paper
2009Quadratic detection with two-photon quantum well infrared photodetectors
Schneider, H.; Liu, H.C.; Winnerl, S.; Song, C.Y.; Drachenko, O.; Walther, M.; Faist, J.; Helm, M.
Journal Article, Conference Paper
2009Saturable absorption mode-locking based on intersubband transitions in quantum wells at 2m
Yang, K.; Ruf, H.; Neuhaus, J.; Dekorsy, T.; Grimm, C.V.-B.; Helm, M.; Heumann, E.; Huber, G.; Biermann, K.; Künzel, H.
Conference Paper
2009Terahertz two-photon quantum well infrared photodetector
Schneider, H.; Liu, H.C.; Winnerl, S.; Song, C.Y.; Walther, M.; Helm, M.
Journal Article
2008Generation and detection of THz radiation with scalable antennas based on GaAs substrates with different carrier lifetimes
Winnerl, S.; Peter, F.; Nitsche, S.; Dreyhaupt, A.; Zimmermann, B.; Wagner, M.; Schneider, H.; Helm, M.; Köhler, K.
Journal Article
2008Inefficiency of intervalley transfer in narrow InGaAs/AlAsSb quantum wells
Tribuzy, C.V.-B.; Ohser, S.; Priegnitz, M.; Winnerl, S.; Schneider, H.; Helm, M.; Neuhaus, J.; Dekorsy, T.; Biermann, K.; Künzel, H.
Conference Paper, Journal Article
2008Leistungsstarke Emitter und einfach handhabbare Detektoren für die Terahertz-Time-Domain-Spektroskopie
Dreyhaupt, A.; Peter, F.; Winnerl, S.; Nitsche, S.; Wagner, M.; Schneider, H.; Helm, M.; Köhler, K.
Journal Article
2008Terahertz emission from a large-area GaInAsN emitter
Peter, F.; Winnerl, S.; Schneider, H.; Helm, M.; Köhler, K.
Journal Article
2007Autocorrelation measurements of free-electron laser radiation using a two-photon QWIP
Schneider, H.; Drachenko, O.; Winnerl, S.; Helm, M.; Maier, T.; Walther, M.
Conference Paper, Journal Article
2007Autocorrelation measurements of the FELBE free-electron laser and photocurrent saturation study in two-photon QWIPs
Schneider, H.; Drachenko, O.; Winnerl, S.; Helm, M.; Walther, M.
Conference Paper
2007Impact of interface formation on intersubband transitions in MBE GaInAs:Si/AlAsSb multiple coupled DQWs
Biermann, K.; Künzel, H.; Tribuzy, C.V.-B.; Ohser, S.; Schneider, H.; Helm, M.
Conference Paper
2007Intersubband relaxation dynamics in narrow InGaAs/AlAsSb quantum well structures studied by femtosecond pump-probe spectroscopy
Tribuzy, C.V.-B.; Ohser, S.; Winnerl, S.; Grenzer, J.; Schneider, H.; Helm, M.; Neuhaus, J.; Dekorsy, T.; Biermann, K.; Künzel, H.
Conference Paper
2007Intersubband relaxation dynamics in single and double quantum wells based on strained InGaAs/AIAs/AIAsSb
Grimm, C.V.-B.; Priegnitz, M.; Winnerl, S.; Schneider, H.; Helm, M.; Biermann, K.; Künzel, H.
Journal Article
2007Large-area photoconductive terahertz detectors
Winnerl, S.; Peter, F.; Nitsche, S.; Dreyhaupt, A.; Drachenko, O.; Schneider, H.; Helm, M.; Köhler, K.
Conference Paper
2006FELBE free-electron laser: Status and application for time resolved spectroscopy experiments
Winnerl, S.; Stehr, D.; Drachenko, O.; Schneider, H.; Helm, M.; Seidel, W.; Michel, P.; Schneider, S.; Seidel, J.; Grafström, S.; Eng, L.-M.; Roch, T.; Strasser, G.; Maier, T.; Walther, M.
Conference Paper
2006Femtosecond pump-probe spectroscopy of intersubband relaxation dynamics in narrow InGaAs/AlAsSb quantum well structures
Tribuzy, C.V.-B.; Ohser, S.; Winnerl, S.; Grenzer, J.; Schneider, H.; Helm, M.; Neuhaus, J.; Dekorsy, T.; Biermann, K.; Künzel, H.
Journal Article
2006Non-destructive investigation of paintings with THz-radiation
Köhler, W.; Panzner, M.; Klotzbach, U.; Beyer, E.; Winnerl, S.; Helm, M.; Rutz, F.; Jördens, C.; Koch, M.; Leitner, H.
Conference Paper
2006Quadratic autocorrelation of free-electron laser radiation and photocurrent saturation in two-photon quantum well infrared photodetectors
Schneider, H.; Drachenko, O.; Winnerl, S.; Helm, M.; Walther, M.
Journal Article
2005Quantenkaskadenlaser
Dekorsy, T.; Helm, M.; Georgiev, N.; Kuenzel, H.
Patent
2001Efficient blue-light emission from silicon - the first integrated Si-based optocoupler
Rebohle, L.; Borany, J. von; Borchert, D.; Frob, H.; Gebel, T.; Helm, M.; Moller, W.; Skorupa, W.
Journal Article
1993Enhancement of the in-plane effective mass of electrons in modulation-doped In(x)Ga(1-x)As quantum wells due to confinement effects
Hendorfer, G.; Seto, M.; Ruckser, H.; Jantsch, W.; Helm, M.; Brunthaler, G.; Jost, W.; Obloh, H.; Köhler, K.; As, D.J.
Journal Article