Institut für Optik und Atomare Physik
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121 Submissions in this community.

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Colloidal CdSe nanoparticles

Scott, Riccardo (2017)

Photonics might prevent the end of Moore's law and maintain the ever-accelerating progress of technology, beneficial for society and living standards in the world. Semiconductor nanoparticles are a...

The Low Density Matter (LDM) beamline at FERMI: optical layout and first commissioning

Svetina, Cristian; Grazioli, Cesare; Mahne, Nicola; Raimondi, Lorenzo; Fava, Claudio; Zangrando, Marco; Gerusina, Simone; Alagia, Michele; Avaldi, Lorenzo; Cautero, Giuseppe; de Simone, Monica; Devetta, Michele; Di Fraia, Michele; Drabbels, Marcel; Feyer, Vitaliy; Finetti, Paola; Katzy, Raphael; Kivimäki, Antti; Lyamayev, Viktor; Mazza, Tommaso; Moise, Angelica; Möller, Thomas; O'Keeffe, Patrick; Ovcharenko, Yevheniy; Piseri, Paolo; Plekan, Oksana; Prince, Kevin C.; Sergo, Rudi; Stienkemeier,... (2015)

The Low Density Matter (LDM) beamline has been built as part of the FERMI free-electron laser (FEL) facility to serve the atomic, molecular and cluster physics community. After the commissioning ph...

Einzelschuss Röntgenabsorptionsspektroskopie an organischen Molekülen

Witte, Katharina (2017)

In der vorliegenden Arbeit wird die Röntgenabsorptionsspektroskopie (XAS) an leichten Elementen mit einer optimierten laser-basierten Plasmaquelle (LPQ) im weichen Röntgenbereich hinsichtlich ultra...

Investigations of nonlinear surface-wave phenomena and anisotropic photoluminescence of nano-film structures via two-dimensional k-space spectroscopy

Heckmann, Jan (2017)

The investigation of surfaces and thin films is of particular interest in current research as it provides a basis for a multiplicity of applications such as waveguides, sensors, solar cells and opt...

Entwicklung eines neuartigen kryogenen 22-Pol Ionenfallenspektrometers (BerlinTrap) und spektroskopische Analyse von isolierten Flavinionenkomplexen

Günther, Alan (2017)

Diese Dissertation beschäftigt sich mit der spektroskopischen Untersuchung biologisch relevanter Flavinmoleküle in der Gasphase. Experimentelle Ergebnisse, unterstützt durch quantenchemische Rechnu...

Relativistic laser plasma dynamics with ultrathin foils

Bränzel, Julia (2017)

This thesis investigated the fundamental interaction processes of laser pulses of relativistic intensity interacting with dense plasmas, created from ultrathin foils. These processes include, ion a...

Development and analysis of all diode laser ns-MOPA systems for high peak power applications

Vu, Thi Nghiem (2017)

The aim of this work is to design and characterize all-diode laser based master oscillator power amplifier (MOPA) systems, which operate in the ns-pulse region with peak powers in the range of more...

Excitation and acceleration of atoms in tailored strong laser fields

Eilzer, Sebastian (2017)

This research investigates the new found effect of frustrated tunnelling ionisation (FTI) in complex electromagnetic field configurations. After the surprising finding of neutral atoms which survi...

Untersuchung der THz-Strahlcharakteristik an der Synchrotronstrahlquelle MLS

Pohl, Andreas (2017)

Synchrotrons haben sich in den letzten Jahren als bedeutende Strahlungsquelle für den THz-Bereich entwickelt. Strahlung mit größeren Wellenlängen als der longitudinalen Ausdehnung der Elektronenpak...

Dynamik von Nichtgleichgewichtsladungsträgern in n- und p-Germanium

Deßmann, Nils (2016)

In recent years, THz sources which deliver short pulses in the picosecond range with relatively high peak power have become more widespread. These short-pulse THz sources require fast broadband det...

Real-time tracking of atomic electron dynamics

Baggash, Mursal (2016)

In dieser Arbeit wird die zeitliche Entwicklung korrelierter Elektronendynamik in elektronischen Wellenpaketen im Ionisationskontinuum von Atomen dargestellt. Das Wellenpaket wird durch Absorption ...

Transmissions-Röntgenmikroskopie mit Laborquellen im harten Röntgenbereich

Baumbach, Stefan (2016)

The aim of this thesis is the development of a transmission x-ray microscope with laboratory sources in the hard x-ray region. This microscope differs from existing transmission hard x-ray microsco...

Weak interactions in ion-ligand complexes of C3H3+ isomers: competition between H-bound and C-bound structures in c-C3H3+center dot L and H2CCCH+center dot L (L = Ne, Ar, N-2, CO2, and O-2)

Botschwina, Peter; Oswald, Rainer; Dopfer, Otto (2011)

Explicitly correlated coupled cluster theory at the CCSD(T)-F12x level (T. B. Adler, G. Knizia, and H.-J. Werner, J. Chem. Phys.127, 221106, 2007) has been employed to study structures and vibratio...

Infrared spectra of the protonated neurotransmitter histamine: competition between imidazolium and ammonium isomers in the gas phase

Lagutschenkov, Anita; Langer, Judith; Berden, Giel; Oomens, Jos; Dopfer, Otto (2011)

The infrared (IR) spectrum of protonated histamine (histamineH+) was recorded in the 575–1900 cm−1 fingerprint range by means of IR multiple photon dissociation (IRMPD) spectroscopy. The IRMPD spec...

Structures and IR/UV spectra of neutral and ionic phenol-Ar-n cluster isomers (n <= 4): competition between hydrogen bonding and stacking

Schmies, Matthias; Patzer, Alexander; Fujii, Masaaki; Dopfer, Otto (2011)

The structures, binding energies, and vibrational and electronic spectra of various isomers of neutral and ionic phenol–Arnclusters with n ≤ 4, PhOH(+)–Arn, are characterized by quantum chemical ca...

Mass analyzed threshold ionization spectra of phenol⋯Ar2: ionization energy and cation intermolecular vibrational frequencies

Armentano, Antonio; Tong, Xin; Riese, Mikko; Pimblott, Simon M.; Müller-Dethlefs, Klaus; Fujii, Masaaki; Dopfer, Otto (2011)

The phenol+⋯Ar2 complex has been characterized in a supersonic jet by mass analyzed threshold ionization (MATI) spectroscopyvia different intermediate intermolecular vibrational states of the first...

Infrared spectra of protonated neurotransmitters: dopamine

Lagutschenkov, Anita; Langer, Judith; Berden, Giel; Oomens, Jos; Dopfer, Otto (2011)

The infrared (IR) spectrum of the isolated protonated neurotransmitter dopamine was recorded in the fingerprint range (570–1880 cm−1) by means of IR multiple photon dissociation (IRMPD) spectroscop...

Ionization-induced pi -> H site switching dynamics in phenol-Ar-3

Ishiuchi, Shun-ichi; Miyazaki, Mitsuhiko; Sakai, Makoto; Fujii, Masaaki; Schmies, Matthias; Dopfer, Otto (2011)

Electronic excitation spectra of the S1 ← S0 transition obtained by resonance-enhanced two-photon ionization (REMPI) are analysed for phenol–Arn (PhOH–Arn) clusters with n ≤ 4. An additivity rule h...

Photoionization-induced large-amplitude pendular motion in phenol(+)-Kr

Miyazaki, Mitsuhiko; Takeda, Akihiro; Ishiuchi, Shun-ichi; Sakai, Makoto; Dopfer, Otto; Fujii, Masaaki (2011)

The dynamics of the intermolecular motion of the phenol+–Kr cation generated by photoionization of the neutral π-structure is probed by picosecond time-resolved infrared spectroscopy. The spectrum ...

Infrared spectrum of the disilane cation (Si2H6+) from Ar-tagging spectroscopy

Savoca, Marco; George, Martin Andreas Robert; Langer, Judith; Dopfer, Otto (2013)

The infrared spectrum of the disilane cation, Si2H6+, in its 2A1g ground state is inferred from photodissociation of cold Si2H6+–Arn complexes (n = 1, 2). Vibrational analysis is consistent with a ...