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  • 1
    Electronic Resource
    Electronic Resource
    Injection seeding for single-mode operation in an optically pumped high-power D2O laser (1995)
    Springer
    International journal of infrared and millimeter waves 16 (1995), S. 2133-2146 
    Details
    ISSN: 1572-9559
    Keywords: injection seeding ; spectral narrowing ; optically pumped D2O laser ; high power ; numerical simulation ; semiclassical theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Spectrally narrow, pulsed outputs consisting of almost a single mode have been obtained from an optically-pumped high-power (200kW) D2O laser by adopting the injection seeding method, where single-mode radiation (seed pulse) from a low-power, compact D2O laser has been injected into the main D2O laser. Spectrally narrow outputs with high power having spectral widths as narrow as 5 MHz have been obtained, when the seed pulses with frequency tuned to one longitudinal mode of the main D2O laser have been injected at a time sufficiently before the lasing of the main laser took place. The experimental results have been compared with those of numerical simulation modified to include the injection field with varying injection times.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02073415
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    HCN laser scattering on the JIPP T-IIU tokamak (1988)
    Springer
    International journal of infrared and millimeter waves 9 (1988), S. 655-665 
    Details
    ISSN: 1572-9559
    Keywords: HCN laser scattering ; density fluctuation ; tokamak plasma ; ICRF heating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A 4-channel HCN laser scattering system has been developed and applied to the JIPP T-IIU tokamak. Main aim of this system is to study microturbulence excited in the plasma, especially in the high power ICRF heating experiment. The observed density fluctuations are in a frequency range of the electron diamagnetic drift wave and have broad frequency spectra. The main part of the wavenumber is found to satisfy the condition of $$k_ \bot \rho _i \lesssim 1$$ . In the heating experiments, deterioration of the energy confinement time is observed, and the density fluctuation level increases with the increase of the heating power.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01013418
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    Paper (German National Licenses)
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