GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Online-Ressource
    Online-Ressource
    Non-Linear Raman Spectroscopy and Its Chemical Aplications : Proceedings of the NATO Advanced Study Institute Held at Bad Windsheim, Germany, August 23 - September 3 1982. (1982)
    Dordrecht :Springer Netherlands,
    Details
    Schlagwort(e): Raman spectroscopy-Congresses. ; Electronic books.
    Beschreibung / Inhaltsverzeichnis: Proceedings of the NATO Advanced Study Institute, Bad Windsheim, Germany, August 23-September 3, 1982.
    Materialart: Online-Ressource
    Seiten: 1 online resource (623 pages)
    Ausgabe: 1st ed.
    ISBN: 9789400979123
    Serie: Nato Science Series C: Series ; v.93
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=6558274
    DDC: 535.846
    Sprache: Englisch
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    GEOMAR EBL
  • 2
    Online-Ressource
    Online-Ressource
    Laser erfassen Bioparameter im Pico- bis Attoliter-Bereich : Projekt VK-Nr. 5989, 13N7511 ; Orstaufgelöste SER-Spektroskopie an einzelnen Zellen (2003)
    [Würzburg]
    Details Verfügbarkeit
    Schlagwort(e): Forschungsbericht
    Materialart: Online-Ressource
    Seiten: Online-Ressource (30 p. = 2,11 MB) , ill., graphs
    Ausgabe: [Elektronische Ressource]
    URL: https://edocs.tib.eu/files/e01fb02/363894462.pdf
    URL: https://edocs.tib.eu/files/e01fb02/363894462l.pdf
    Sprache: Deutsch
    Anmerkung: Contract BMBF 13 N 7511. - Differences between the printed and electronic version of the document are possible. - nIndex p. 27 - 30 , Also available as printed version , Systemvoraussetzungen: Acrobat reader.
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    GEOMAR KATALOG
    Link zum Bibliothekskatalog
    get availability status
  • 3
    Digitale Medien
    Digitale Medien
    Femtosecond time-resolved two-photon ionization spectroscopy of K2 (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 9749-9754 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We investigated the coherent motion of vibrational wave packets in the |B〉 1Πu state of the potassium dimer applying two color pump/probe spectroscopy with a sub 100 fs time resolution. Special interest was paid to the ionization probe step which was analyzed carefully by varying the probe energy over a wide range. Time-dependent quantum calculations explain the experimental outcomes by introducing a nonconstant transition dipole moment between the |B〉 and the ionic state |X+〉 and by taking into account the excitation of long lived autoionizing Rydberg states. © 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.475271
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Resonant micro-Raman investigations of the ZnSe–LO splitting in II–VI semiconductor quantum wires (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 1446-1450 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Resonant micro-Raman spectroscopy was performed on ZnSe/Cd0.2Zn0.8Se quantum wires. The LO phonon frequencies observed for the wires were investigated as a function of the temperature and the wire width. ZnSe/Cd0.2Zn0.8Se quantum wells grown by molecular beam epitaxy were patterned by electron beam lithography and wet chemical etching to obtain quantum wires with widths down to the sub-100 nm region. The sample under investigation consisted of different areas each containing wires with well defined widths. Micro-Raman spectroscopy enabled us to perform measurements on a particular area of the sample. By this method Raman spectra could be obtained as a function of the wire width. The sample temperature was chosen to be between room temperature and 9 K. A splitting of the ZnSe and the ZnSe-like LO phonons of the ZnSe/ Cd0.2Zn0.8Se quantum wires was observed. The size of this splitting was found to depend only on the wire width and not on the temperature. This behavior is due to the strain relaxation, which occurs at the edge zone of each quantum wire. The increasing influence of the edge zone for decreasing wire width is the reason for the wire width dependence of the splitting between the ZnSe and the ZnSe-like LO phonon. As a result, the importance of partial strain relaxation for the discussion of the vibronic properties of the patterned semiconductor systems was confirmed. © 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.364181
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 5
    Digitale Medien
    Digitale Medien
    Selective generation and control of excited vibrational wave packets in the electronic ground state of K2 (1999)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 110 (1999), S. 9560-9567 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We investigate the generation and real-time monitoring of coherent vibrational wave packets in the electronic ground state of supersonic jet-cooled potassium dimers. Vibrationally excited wave packets with mean quantum numbers v¯=6 and v¯=11 are generated by a stimulated Raman process which is enhanced by an electronic resonance. Two ultrashort laser pulses of different wavelengths induce the pump and the dump process. The population of the final hot ground-state wave packets is successfully controlled by a variable time delay between the pump and the dump process, which enables us to wait with the dumping for the optimal Franck–Condon overlap between the intermediate and the predicted final vibrational wave packet in the electronic ground state. © 1999 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.478921
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 6
    Digitale Medien
    Digitale Medien
    Phonon relaxation in CdSSe semiconductor quantum dots studied by femtosecond time-resolved coherent anti-Stokes Raman scattering (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 5268-5271 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We have observed the relaxation dynamics of coherent longitudinal optical phonons in CdSSe quantum dots embedded in a glass matrix by femtosecond time-resolved coherent anti-Stokes Raman scattering (CARS). The phase relaxation time is directly deduced from the exponential decay of the signal. Oscillations with frequency of the longitudinal optical (LO) phonon are superimposed on the CARS signal. We consider two possible mechanisms, which result in such oscillations. The excitation of a LO phonon wave packet of the fundamental and the overtone would produce quantum beats. The second possibility is displacive excitation of coherent phonons. This mechanism does not contribute to the CARS signal, but it could attenuate it periodically with the phonon frequency. © 2000 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1312843
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 7
    Digitale Medien
    Digitale Medien
    Raman investigation of CdxZn1−xSe/ZnSe quantum wires: Strain relaxation and excitation profile (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 764-771 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: CdZnSe/ZnSe quantum wires with two different Cd contents and different wire sizes were investigated by resonance Raman spectroscopy. Depending on the Cd content, the longitudinal optical (LO) phonon signal of the wires shows an asymmetry or a clear separation into two peaks. This separation is caused by an inhomogeneous strain parallel to the layer plane due to the strain relaxation at the wire edges. Thus, the observed signals can be attributed to LO phonons excited in the center and in the edge of the structures. Furthermore, high outgoing resonances for the LO overtones (2LO and 3LO) can be observed. For two wire sizes [(a): length L=100 μm, width W=18 nm; (b): L=49 nm, W=27 nm] excitation profiles of the LO fundamental and of the first overtone of Cd0.2Zn0.8Se quantum wires have been recorded. The excitation profiles clearly show structures attributed to the incoming and outgoing resonances. The intensity ratio 2LO/1LO, which is also a good measure for the electron–phonon coupling in a system, was determined for various wire sizes. The results point to a decrease of the electron–phonon coupling for decreasing wire length (transition from wire to dot). © 2000 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.373735
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 8
    Digitale Medien
    Digitale Medien
    Raman spectroscopic investigations on molecular crystals: Pressure and temperature dependence of external phonons in naphthalene-d8 and anthracene-d10 (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 4582-4596 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: The molecular crystals naphthalene-d8 and anthracene-d10 have been investigated at pressures in the range of ambient to 0.8 GPa and simultaneously at temperatures from room temperature down to 15 K. The accurate frequency measurement of the lattice modes allowed the determination of a small temperature dependence in some of the mode-Grüneisen parameters. A qualitative comparison of the temperature dependence with theory is made.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.452734
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 9
    Digitale Medien
    Digitale Medien
    Excitation profile of coherent anti-Stokes Raman scattering from the MnO−4 ion doped in a KClO4 crystal at low temperature (1993)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 99 (1993), S. 6302-6307 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We have performed polarized resonance coherent anti-Stokes Raman experiments on the permanganate ion doped in potassium perchlorate single crystals at temperature T=15 K. At this temperature the m (Cs) site splitting of the excited degenerate 1T2-electronic level of the permanganate ion and the vibronic structure are well resolved. We report on the A'-ν1 coherent anti-Stokes Raman excitation profile which shows a strong dependence on the frequency of the pump laser. The simulation of the experimental results is performed by using the transform theory, which enables one to calculate the resonance Raman excitation profile solely from the measured absorption spectrum. According to the well known relation between the third-order nonlinear susceptibility and the Raman polarizability the coherent anti-Stokes excitation profile is given by a simple product of two Raman excitation profiles which are shifted relative to each other. The linear and the quadratic electron-phonon coupling as well as the influence of non-Condon terms were taken into account. Since the transform theory is mode selective in case there are no mode mixing effects the results derived from the description of the Raman excitation profiles and the coherent anti-Stokes excitation profiles are more definite. For this purpose one only needs the model parameters of the mode of interest. The simulation of the A'-ν1 coherent anti-Stokes profile shows that a small amount of non-Condon coupling yields to a better agreement with the experiment.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.465867
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 10
    Digitale Medien
    Digitale Medien
    Absorption, luminescence, resonance Raman, and resonance coherent anti-Stokes Raman spectroscopy on unsymmetrically substituted diacetylene single crystals with color zones (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 97 (1992), S. 2237-2246 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: We have analyzed the color zones in single crystals of the diacetylene derivative 6-(p-toluenesulfonyloxy)-2,4-hexadiynyl-p-fluorobenzenesulfonate by means of various optical spectroscopical methods in order to derive a plausible model for the origin of this type of chromism. By applying absorption, luminescence, resonance Raman, and coherent anti-Stokes Raman spectroscopy we obtained sufficient information for an understanding of the nature of the color zones. With the help of a nearly free-electron model calculation and a theoretical model for side group torsions, we found that a disturbance of the π-electron conjugation by a defect hindrance on side groups is the proper reason for the observed chromism. Growth defects in {111} crystal-growth sectors with a Burgers vector in the [010] direction cause the shape of the color zones. We found, particularly, that resonance coherent anti-Stokes Raman spectroscopy proves to be a valuable tool for the investigation of electronic and structural properties of the diacetylene crystals.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.463115
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...