Über zwei sterinähnliche Körper ausAsclepias syriaca II

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Four-wave mixing in semiconductor laser amplifiers: Applications for optical communication systems

Four-wave mixing in semiconductor laser amplifiers enables various applications in photonic switching including wavelength conversion, space and time switching, optical phase conjugation, and demultiplexing. Switching times faster than 1 ps are possible.     

Zur quantitativen Bestimmung der Harns?ure

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Über Gruppen Von Iterativen Wurzeln Der Formalen Potenzreihe F(x) = x

Let ?¦x¦ be the ring of formal power series in one indeterminate x over ?, denote by Γ the group of invertible series in ?¦x¦, and by E_Γ the set of all iterative roots of x in Γ. Then we will show that E_Γ is neither a subgroup of Γ nor a family of commuting series. We describe all subgroups of Γ lying in E_Γ, they are abelian and isomorphic to subgroups of the group E of complex roots of unity. Furthermore we determine the maximal subgroups of Γ in E{Γ} and use them to investigate how the subgroups in E _I are related.     

Über das Wachstum analytischer Funktionen in Halbstreifen und ähnlichen Gebieten

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Über einen von Prof. Pebal vermutheten thermochemischen Satz,betreffend nicht umkehrbare elektrolytische Processe

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Vibrational Dephasing in Ionic Liquids as a Signature of Hydrogen Bonding

Understanding both structure and dynamics is crucial for producing tailor‐made ionic liquids (ILs). We studied the vibrational and structural dynamics of medium versus weakly hydrogen‐bonded C?H groups of the imidazolium ring in ILs of the type [1‐alkyl‐3‐methylimidazolium][bis(trifluoromethanesulfonyl)imide] ([C_nmim][NTf₂]), with n=1, 2, and 8, by time‐resolved coherent anti‐Stokes Raman scattering (CARS) and quantum‐classical hybrid (QCH) simulations. From the time series of the CARS spectra, dephasing times were extracted by modeling the full nonlinear response. From the QCH calculations, pure dephasing times were obtained by analyzing the distribution of transition frequencies. Experiments and calculations reveal larger dephasing rates for the vibrational stretching modes of C(2)?H compared with the more weakly hydrogen‐bonded C(4,5)?H. This finding can be understood in terms of different H‐bonding motifs and the fast interconversion between them. Differences in population relaxation rates are attributed to Fermi resonance interactions.