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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 3074-3075 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The resonance enhancement of an optoacoustic signal is used to obtain a reliable discriminator in order to stabilize the output frequency of a CO2 laser. The CO2 laser is maintained on the 9P(36) emission line, the methyl alcohol vapor pressure within the acoustic cell is maintained at a value pg =1 Torr, and the chopper frequency is fixed at the fundamental longitudinal resonant frequency of the cylindrical resonator throughout the experiment. Utilizing a back electret condenser microphone to detect the optoacoustic signal, a reliable discriminator is obtained for a value of pump power as low as 10 mW.
    Type of Medium: Electronic Resource
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