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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 25 (1981), S. 7-12 
    ISSN: 1432-0630
    Keywords: 06.30 F ; 07.62 ; 73.40 R
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Video response and mixing behaviour of metal-insulator-metal point contact diodes have been investigated for visible laser light. Thermally enhanced tunneling is shown to dominate the dc detection behavior of those diodes, while mixing of frequencies being more than several MHz apart is a more complex phenomenon involving thermal, field-and photo-assisted tunneling. In further experiments the potential of point contact diodes for optical heterodyne spectroscopy was examined. Two green laser lines of 122 GHz frequency difference were mixed with the second harmonic of an appropriate microwave frequency, generated simultaneously on the diode. The modestS/N ratio achieved has to be assigned to the different behaviour of metal-insulator-metal diodes in the visible and rf range.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0649
    Keywords: 06.30F ; 07.62 ; 73.40R
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Frequency differences of up to 170 GHz between a cw dye laser and a krypton laser at 568 nm were measured by mixing laser and microware radiation with a metalinsulator-metal point contact diode. Beat signals are well above noise and there is still great potential for improvement when better microwave oscillators are used. From the measurements reported it follows that the diode can be used for determining still higher frequency differences of visible laser radiation.
    Type of Medium: Electronic Resource
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