@article{FalgeEngelGraefe2013,
  author    = {Falge, M. and Engel, V. and Gr{\"a}fe, S.},
  title     = {Time-resolved photoelectron spectroscopy of coupled nuclear-electronic dynamics},
  series = {EPJ Web of Conferences},
  volume    = {41},
  journal   = {EPJ Web of Conferences},
  issn      = {2100-014X},
  doi       = {10.1051/epjconf/20134102036},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-121812},
  pages     = {02036},
  year      = {2013},
  abstract  = {We study the effect of nuclear-electron coupling on time-resolved photo-electron spectra, employing a model system which allows to directly comparing spectra resulting from the adiabatic approximation with those obtained within a non-Born-Oppenheimer description.},
  language  = {en}
}
@article{OjhaForsterKumaretal.2013,
  author    = {Ojha, Animesh K. and Forster, Stefan and Kumar, Sumeet and Vats, Siddharth and Negi, Segeeta and Fischer, Ingo},
  title     = {Synthesis of well-dispersed silver nanorods of different aspect ratios and their antimicrobial properties against gram positive and negative bacterial strains},
  series = {Journal of Nanobiotechnology},
  volume    = {11},
  journal   = {Journal of Nanobiotechnology},
  number    = {42},
  issn      = {1477-3155},
  doi       = {10.1186/1477-3155-11-42},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-122837},
  year      = {2013},
  abstract  = {In the present contribution, we describe the synthesis of highly dispersed silver nanorods (NRs) of different aspect ratios using a chemical route. The shape and size of the synthesized NRs were characterized by Transmission Electron Microscopy (TEM) and UV-visible spectroscopy. Longitudinal and transverse absorptions bands confirm the rod type structure. The experimentally recorded UV-visible spectra of NRs solutions were fitted by using an expression of the extinction coefficient for rod like nano structures under the dipole approximation. Simulated and experimentally observed UV-visible spectra were compared to determine the aspect ratios (R) of NRs. The average values of R for NR1, NR2 and NR3 solutions are estimated to be 3.0 +/- 0.1, 1.8 +/- 0.1 and 1.2 +/- 0.1, respectively. These values are in good agreement with those obtained by TEM micrographs. The silver NRs of known aspect ratios are used to study antimicrobial activities against B. subtilis (gram positive) and E. coli (gram negative) microbes. We observed that the NRs of intermediate aspect ratio (R = 1.8) have greater antimicrobial effect against both, B. subtilis (gram positive) and E. coli (gram negative). The NRs of aspect ratio, R = 3.0 has better antimicrobial activities against gram positive than on the gram negative.},
  language  = {en}
}
@article{SteinbacherBubackNuernbergeretal.2013,
  author    = {Steinbacher, A. and Buback, J. and Nuernberger, P. and Brixner, T.},
  title     = {Precise and rapid detection of optical activity for accumulative femtosecond spectroscopy},
  series = {EPJ Web of Conferences},
  volume    = {41},
  journal   = {EPJ Web of Conferences},
  doi       = {10.1051/epjconf/20134112011},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-129124},
  pages     = {12011},
  year      = {2013},
  abstract  = {We present a fast and sensitive polarimeter combining common-path optical heterodyne interferometry and accumulative spectroscopy to detect rotatory power. The sensitivity of rotatory detection is determined to be 0.10 milli-degrees for a measurement time of only one second and an interaction length of 250 µm. Its suitability for femtosecond studies is demonstrated in a non-resonant two-photon photodissociation experiment.},
  language  = {en}
}
@article{ArcaTeddeSrameketal.2013,
  author    = {Arca, Francesco and Tedde, Sandro F. and Sramek, Maria and Rauh, Julia and Lugli, Paolo and Hayden, Oliver},
  title     = {Interface Trap States in Organic Photodiodes},
  series = {Scientific Reports},
  volume    = {3},
  journal   = {Scientific Reports},
  doi       = {10.1038/srep01324},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-131507},
  pages     = {1324},
  year      = {2013},
  abstract  = {Organic semiconductors are attractive for optical sensing applications due to the effortless processing on large active area of several \(cm^2\), which is difficult to achieve with solid-state devices. However, compared to silicon photodiodes, sensitivity and dynamic behavior remain a major challenge with organic sensors. Here, we show that charge trapping phenomena deteriorate the bandwidth of organic photodiodes (OPDs) to a few Hz at low-light levels. We demonstrate that, despite the large OPD capacitances of similar to 10 nF \(cm^{-2}\), a frequency response in the kHz regime can be achieved at light levels as low as 20 nW \(cm^{-2}\) by appropriate interface engineering, which corresponds to a 1000-fold increase compared to state-of-the-art OPDs. Such device characteristics indicate that large active area OPDs are suitable for industrial sensing and even match medical requirements for single X-ray pulse detection in the millisecond range.},
  language  = {en}
}
@article{RudolfKanalGehrigetal.2013,
  author    = {Rudolf, P. and Kanal, F. and Gehrig, D. and Niesel, J. and Brixner, T. and Schatzschneider, U. and Nuernberger, P.},
  title     = {Femtosecond mid-infrared study of the aqueous solution photochemistry of a CO-releasing molecule (CORM)},
  series = {EPJ Web of Conferences},
  volume    = {41},
  journal   = {EPJ Web of Conferences},
  doi       = {10.1051/epjconf/20134105004},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-129104},
  pages     = {05004},
  year      = {2013},
  abstract  = {Ultraviolet irradiation of CO-releasing molecules (CORMs) in water eventually leads to the loss of several carbon monoxide ligands.We show for an exemplary manganese tricarbonyl CORM that only one ligand is photolyzed off on an ultrafast timescale and that some molecules may undergo geminate recombination.},
  language  = {en}
}
@article{RuetzelKullmannBubacketal.2013,
  author    = {Ruetzel, S. and Kullmann, M. and Buback, J. and Nuernberger, P. and Brixner, T.},
  title     = {Exploring higher-lying electronic states of a molecular switch by coherent triggered-exchange 2D electronic spectroscopy},
  series = {EPJ Web of Conferences},
  volume    = {41},
  journal   = {EPJ Web of Conferences},
  number    = {05001},
  doi       = {10.1051/epjconf/20134105001},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-129117},
  year      = {2013},
  abstract  = {We use pump-repump-probe transient absorption spectroscopy to investigate the role of higher-lying electronic states in the photochemistry of a molecular switch. Moreover, replacing the pump pulse by a pulse-shaper-generated phase-stable double pulse, triggered-exchange two-dimensional (TE2D) electronic spectroscopy is established in the visible regime.},
  language  = {en}
}
@article{BrixnerAeschlimannFischeretal.2013,
  author    = {Brixner, T. and Aeschlimann, M. and Fischer, A. and Geisler, P. and Goetz, S. and Hecht, B. and Huang, J. S. and Keitzl, T. and Kramer, C. and Melchior, P. and Pfeiffer, W. and Razinskas, G. and Rewitz, C. and Schneider, C. and Str{\"u}ber, C. and Tuchscherer, P. and Voronine, D. V.},
  title     = {Coherent spectroscopies on ultrashort time and length scales},
  series = {EPJ Web of Conferences},
  volume    = {41},
  journal   = {EPJ Web of Conferences},
  doi       = {10.1051/epjconf/20134109017},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-129073},
  pages     = {09017},
  year      = {2013},
  abstract  = {Three spectroscopic techniques are presented that provide simultaneous spatial and temporal resolution: modified confocal microscopy with heterodyne detection, space-time-resolved spectroscopy using coherent control concepts, and coherent two-dimensional nano-spectroscopy. Latest experimental results are discussed.},
  language  = {en}
}
@article{KnorrRudolfNuernberger2013,
  author    = {Knorr, Johannes and Rudolf, Philipp and Nuernberger, Patrick},
  title     = {A comparative study on chirped-pulse upconversion and direct multichannel MCT detection},
  doi       = {10.1364/OE.21.030693},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-111334},
  year      = {2013},
  abstract  = {A comparative study is carried out on two spectroscopic techniques employed to detect ultrafast absorption changes in the mid-infrared spectral range, namely direct multichannel detection via HgCdTe (MCT) photodiode arrays and the newly established technique of chirped-pulse upconversion (CPU). Whereas both methods are meanwhile individually used in a routine manner, we directly juxtapose their applicability in femtosecond pump-probe experiments based on 1 kHz shot-to-shot data acquisition. Additionally, we examine different phase-matching conditions in the CPU scheme for a given mid-infrared spectrum, thereby simultaneously detecting signals which are separated by more than 200 cm-1.},
  language  = {en}
}