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  • Articles  (29)
  • Articles: DFG German National Licenses  (29)
  • Latest Papers from Table of Contents or Articles in Press
  • 42.80  (29)
  • Springer  (29)
  • American Chemical Society (ACS)
  • 2020-2024
  • 2015-2019
  • 1980-1984  (29)
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  • 1984  (13)
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  • Articles  (29)
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  • Articles: DFG German National Licenses  (29)
  • Latest Papers from Table of Contents or Articles in Press
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  • Springer  (29)
  • American Chemical Society (ACS)
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  • 2020-2024
  • 2015-2019
  • 1980-1984  (29)
  • 1970-1974
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  • 1
    Electronic Resource
    Electronic Resource
    Characteristics of the S/N ratio of the beat note obtained from the frequency-mixing experiments between a CO2 and an H2O laser (1984)
    Springer
    Applied physics 34 (1984), S. 49-53 
    Details
    ISSN: 1432-0649
    Keywords: 62.65 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The S/N ratio of the beat note obtained from the frequency mixing between a 32 THz CO2 laser, a 10.7 THz H2O laser and a 22 GHz klystron is measured as a function of incident power of both lasers and the klystron on the W-Ni point contact diode. A maximum S/N ratio of 36 dB is obtained. It is found that the S/N ratio arises from the product of the contributions due to the incident power and the fifth coefficient of the current-voltage characteristic of the W-Ni diode. These characteristics are discussed qualitatively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697947
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ninth-order nonlinear polarization and vuv generation in Hg vapor (1984)
    Springer
    Applied physics 34 (1984), S. 171-173 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Interference of resonant ninth-order and nonresonant seventh-order nonlinear polarizations in Hg atoms has been studied, and direct conversion of fundamental ir radiation into the vuv has been obtained. The interference has been observed in the form of a Fano-Boitler contour. The efficiency of generation by ninth-order processes appears to be higher than that by seventh-order.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697511
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  • 3
    Electronic Resource
    Electronic Resource
    Optical-gyroscope application of efficient crossed-channel acoustooptic devices (1984)
    Springer
    Applied physics 35 (1984), S. 113-118 
    Details
    ISSN: 1432-0649
    Keywords: 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An acoustooptic (AO) deflector/modulator using a single-mode crossed-channel waveguide of 2Δn type and an interdigital transducer is fabricated in aY-Z LiNbO3 substrate. This module has shown a high diffraction efficiency. A 50% diffraction efficiency and a bandwidth of 13.4 MHz were obtained with 0.13 W of surface-acoustic wave power centered at 320MHz. Since the cross section of the channel waveguide and that of the optical fiber are comparable, the interfacting of the resultant acoustooptic devices with fiber optical systems would greatly simplified. In addition, the frequency-shifted optical beam can be conveniently used as a reference signal or local oscillator in heterodyne detection. Consequently, this cross-channel acoustooptic device should find a variety of applications in realizing an integrated-optics module with a 50–50% power slit, optical communication, and an optical fiber system. One of those applications, optical gyroscopes, is proposed by using this kind of crossed-channel AO device.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697430
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  • 4
    Electronic Resource
    Electronic Resource
    Theory of synchronously pumped dye lasers (1983)
    Springer
    Applied physics 30 (1983), S. 135-142 
    Details
    ISSN: 1432-0649
    Keywords: 42.55 ; 42.60 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An analysis of cw synchronously pumped dye lasers is presented. Under the assumption that the cavity (tuning element) bandwidth is much wider than the bandwidth of the transform limited pulses generated, the pulse forming dynamics is rigorously treated. It is shown that for a finite mismatch between the lengths of the dye and the pump lasers, a steady-state pulse develops in the dye laser cavity with a conserved pulseshape. The characteristics (energy, shape, peak power, duration) of these pulses of ultimate width are quantitatively determined as a function of cavity mismatch. An analytical solution for the pulse envelope is determined, which yieldsI(t)∝Sech2(t/t p ) to a good approximation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695468
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  • 5
    Electronic Resource
    Electronic Resource
    Color signal correlation detection by matched spatial filtering (1983)
    Springer
    Applied physics 32 (1983), S. 1-6 
    Details
    ISSN: 1432-0649
    Keywords: 42.30 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A polychromatic correlation detection technique by complex spatial filtering is presented. This technique utilizes a diffraction grating and three co-lineared (red, green, and blue) coherent sources. The technique of complex spatial filter synthesis for the polychromatic corelation detection is demonstrated. This technique offers true color correlation detection which is very suitable for color signal recognition and identification. The correlation diffraction efficiency with this technique is generally higher than that of the wavelength-multiplexed technique. Several interesting experimental demonstrations of this color signal correlation detection scheme are provided. Finally we note that this color signal detection technique is a simple and versatile processing technique which has broad range of applications of complex color signal detection, recognition and identification.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688766
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  • 6
    Electronic Resource
    Electronic Resource
    Waveform of the amplitude modulated laser light by means of a mechanical chopper (1983)
    Springer
    Applied physics 32 (1983), S. 119-122 
    Details
    ISSN: 1432-0649
    Keywords: 42.80 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The model which reproduces accurately and conveniently the waveform of the amplitude modulated cw laser light in the TEM00 mode by a mechanical chopper is developed. It is found that its predictions are in good agreement with the strict, completely accurate but rather lengthy and inconvenient treatment and with the experiment. The criterion for the efficient amplitude modulation of the laser light by a mechanical chopper is formulated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688816
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  • 7
    Electronic Resource
    Electronic Resource
    A laser optical method for the determination of tropospheric OH concentrations (1984)
    Springer
    Applied physics 33 (1984), S. 103-113 
    Details
    ISSN: 1432-0649
    Keywords: 42.68 ; 42.80 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A long-path absorption procedure for the determination of tropospheric OH concentrations is described in detail. Initial measurements using this method were carried out in Frankfurt a. M. By including in the evaluation the visible radiation of a frequencydoubled dye laser used in the measurements, it was possible to mathematically reduce the signal fluctuations caused by the scattering and density fluctuations of tropospheric air. The resulting detection limit was 3×106 OH per cm3. SO2 concentrations which had to be simultaneously determined in order to eliminate an interference effect, could be detected in the range of 1–40 ppb on the absorption path.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688355
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  • 8
    Electronic Resource
    Electronic Resource
    Bistable operation of a dual-wavelength synchronously mode-locked cw dye laser (1983)
    Springer
    Applied physics 32 (1983), S. 7-8 
    Details
    ISSN: 1432-0649
    Keywords: 42.60 ; 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Bistable operation of a dual-wavelength synchronously mode-locked cw dye laser is reported. Wavelength switching is found to depend on the pump power and the dye laser cavity lengths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688767
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  • 9
    Electronic Resource
    Electronic Resource
    Differential amplitude contrast imaging in the scanning optical microscope (1983)
    Springer
    Applied physics 32 (1983), S. 187-191 
    Details
    ISSN: 1432-0649
    Keywords: 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A split detector is used in a scanning optical microscope to produce high-quality differential amplitude contrast images. A slight lateral offset in the detector position is shown to introduce information about object height variations to the image. These results are compared with images obtained by electrical differentiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688286
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  • 10
    Electronic Resource
    Electronic Resource
    Coherence requirement for partially coherent correlation detection (1983)
    Springer
    Applied physics 30 (1983), S. 23-27 
    Details
    ISSN: 1432-0649
    Keywords: 42.80
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The coherence requirement for correlation detection is determined using the theory of partially coherent light. It is shown that the requirement for temporal coherence strongly dependes on the spatial frequency and the spatial extension of the target (i.e., space bandwidth product). However, the spatial coherence requirement depends only on the extension of the target. Some numerical results are also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00692654
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