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  • Articles  (177)
  • Articles: DFG German National Licenses  (177)
  • Latest Papers from Table of Contents or Articles in Press
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  • Physics  (177)
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  • Articles  (177)
Source
  • Articles: DFG German National Licenses  (177)
  • Latest Papers from Table of Contents or Articles in Press
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  • Springer  (177)
  • American Chemical Society (ACS)
  • Wiley
  • eLife Sciences Publications
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Year
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  • 1
    Electronic Resource
    Electronic Resource
    Self-pulsing and bichromatic emission in homogeneously broadened bidirectional ring lasers (1987)
    Springer
    Applied physics 44 (1987), S. 211-220 
    Details
    ISSN: 1432-0649
    Keywords: 42.50 ; 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We study the effects of saturation-induced Bragg gratings on the mode structure and dynamics of bidirectional homogeneously broadened ring lasers. The grating is viewed as a distributed feedback medium in a ring cavity and modes appropriate to such a structure are used. A Fourier decomposed rate equation model is developed to study the behavior of these modes above threshold. The difference in the properties of these solutions from the modes of an unfilled ring cavity lead to the possibility of bichromatic emission and both regular undamped and irregular damped self-pulsing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692124
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  • 2
    Electronic Resource
    Electronic Resource
    Coherent spectroscopy with a distributed feedback dye laser (1987)
    Springer
    Applied physics 44 (1987), S. 221-233 
    Details
    ISSN: 1432-0649
    Keywords: 42.60 ; 42.65 ; 78.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A simple and flexible distributed feedback dye laser source pumped by the harmonic of a mode-locked YAG laser is described. Measurements of dephasing times of isotopic and hot bands in CS2 liquid exploiting both the frequency and time-resolution of this source are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692125
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  • 3
    Electronic Resource
    Electronic Resource
    Analysis of Raman gain for focussed Gaussian pump beams (1988)
    Springer
    Applied physics 45 (1988), S. 37-44 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 78.30j
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Several theoretical and numerical models have been published which describe the evolution of a Stokes beam in a Raman medium excited by a focussed pump beam. Generally, the published theoretical departures from the plane-wave theory of Raman scattering are based on assumptions about the power of the pump beam. In this paper we present a theoretical model which is shown to be in excellent agreement with an exact numerical treatment, and which is valid without restrictions on the pump power. Its predictions are used to indicate the range of validity of earlier theories.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692339
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  • 4
    Electronic Resource
    Electronic Resource
    Observation of laser-induced off-resonance intermolecular electronic energy transfer (1989)
    Springer
    Applied physics 49 (1989), S. 109-112 
    Details
    ISSN: 1432-0649
    Keywords: 33 ; 42.65 ; 42.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report the observation of off-resonance electronic energy transfer from an excited rhodamine 6G molecule to an azulene molecule in solution. The process requires the coupling of the radiation field in the transfer process. We demonstrate that the relation Y A ∝ I 1/2 between the acceptor's induced fluorescence intensity and the laser intensity, predicted by Jortner et al. is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332269
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  • 5
    Electronic Resource
    Electronic Resource
    CARS spectroscopy of molecules and clusters in supersonic jets (1988)
    Springer
    Applied physics 45 (1988), S. 205-214 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 33.20.Fb ; 36.40.+d ; 34.50.Ez
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Supersonic molecular beams of D2, CH4, NH3, and C2H4 are investigated in the expansion region employing collinear coherent anti-Stokes Raman spectroscopy (CARS). The analysis of rotationally resolved CARS spectra allows the determination of temperatures in the beam. The rotational relaxation as a function of stagnation pressure and separation from the nozzle is studied by recording theQ branch for D2 and the ν3 R andS branches for CH4. Rotational temperatures for NH3 are determined by investigating the complete ν3 band. At strong stagnation conditions broad structures arise which can be attributed to the formation of NH3 clusters. For C2H4 the ν5 band with resolved rotational structure is reported. Again, at larger distances from the nozzle, broad structures are observed. They are assigned to the ν1 and ν5 vibrations in the C2H4 cluster.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00687148
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  • 6
    Electronic Resource
    Electronic Resource
    Coherent vacuum ultraviolet generation by frequency mixing in glass hollow waveguides (1988)
    Springer
    Applied physics 45 (1988), S. 293-299 
    Details
    ISSN: 1432-0649
    Keywords: 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Efficiency for vuv generation in a glass hollow waveguide has been compared with that obtained by tight focussing of the primary radiation. Coherent vuv radiation is generated by resonant four-wave difference frequency mixing and four-wave parametric processes in xenon. At vuv wavelengths close to the 5p-6s resonance, the efficiency of generation was found to be enhanced by a factor of up to 2.5 under phase-matched conditions. The measured enhancement is limited by losses due to absorption of the generated radiation and by propagation losses of the primary beams along the waveguide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00687159
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  • 7
    Electronic Resource
    Electronic Resource
    The influence of phase-modulation on femtosecond time-resolved coherent Raman spectroscopy (1988)
    Springer
    Applied physics 47 (1988), S. 307-312 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The influence of phase-modulation on femtosecond time-resolved coherent Raman scattering is investigated theoretically and experimentally. The coherent Raman signal taken as a function of the spectral position shows unexpected temporal oscillations close to time zero. A theoretical analysis of the coherent Raman scattering process indicates that the femtosecond light pulses are amplitude and phase modulated. The pulses are asymmetric in time with more slowly decaying trailing wings. The phase of the pulse amplitude contains quadratic and higher-order contributions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00716091
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  • 8
    Electronic Resource
    Electronic Resource
    Intense ultrashort pulse generation in a two-photon pumped generator-amplifier system (1989)
    Springer
    Applied physics 48 (1989), S. 115-124 
    Details
    ISSN: 1432-0649
    Keywords: 42.55 M ; 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Intense ultrashort light pulses are generated i) by two-photon induced amplified spontaneous emission in a dye generator cell and ii) by two-photon induced seeding pulse amplification of a picosecond light continuum. The generated signals are amplified in a twophoton pumped dye amplifier. A passively mode-locked Nd: glass laser is used as pump source. Ligh pulses in the spectral region between 565 and 630 nm are generated in the dyes rohodamine B, rhodamine 6G, and PYC.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692136
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  • 9
    Electronic Resource
    Electronic Resource
    Pulse formation in synchronously pumped infrared dye lasers (1989)
    Springer
    Applied physics 48 (1989), S. 149-153 
    Details
    ISSN: 1432-0649
    Keywords: 42.55M ; 42.60F ; 42.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Pulse formation in synchronously pumped dye lasers with fast relaxing dyes is treated by computer simulation. The influence of spontaneous emission and chirp, as well as cavity mismatch, on the pulse characteristics and stability of generation are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692140
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  • 10
    Electronic Resource
    Electronic Resource
    Study of processes of translational, rotational, and vibrational relaxation based on CARS spectra line shapes (1989)
    Springer
    Applied physics 48 (1989), S. 273-283 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 34.00
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper reviews the various physico-chemical processes responsible for actual linewidths encountered in high-resolution coherent anti-Stokes Raman spectroscopy (CARS). Most of the experimental data are based on linewidth measurements using a pulseamplified CARS spectrometer with an emission bandwidth (FWHM) of 2×10−3 cm−1. Detailed rotational and vibrational relaxation constants have been obtained from the analysis of theQ-branch profiles of C2H2, N2, CH4, and SiH4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00694359
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