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  • 1
    Electronic Resource
    Electronic Resource
    Efficient generation of FIR radiation by optical pumping of D2 18O (1992)
    Springer
    Applied physics 55 (1992), S. 347-354 
    Details
    ISSN: 1432-0649
    Keywords: 42.55.Lt ; 42.65.Dr
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this paper we show that D2 18O vapour, optically pumped with a continuously tunable high pressure CO2 laser, is an excellent source for far infrared radiation. Both high photon conversion coefficients and broad Raman gain regions were found for a large number of new laser transitions spread over the frequency range from 25 cm−1 to 240 cm−1. We demonstrate that these Raman gain regions can be used to generate far infrared laser pulses with high intensity and durations of about 100 ps.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00333079
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Far-infrared laser-emission spectroscopy on ammonia isotopomers (1994)
    Springer
    Applied physics 59 (1994), S. 453-465 
    Details
    ISSN: 1432-0649
    Keywords: 42.55.Lt ; 42.65.Dr
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this paper we report the investigation of the isotopic ammonia gases14NH3,14NH2D,14NHD2,15NH3 and15ND3 optically pumped by a continuously tunable 20 atm CO2-laser. We found 267 far-infrared emission lines, produced by both inversion and Raman processes, in the frequency range from 15 cm−1 to about 250 cm−1. 200 of these were observed for the first time. We obtained far-infrared Raman tuning ranges exceeding 3 cm−1, photon conversion coefficients up to 12% and maximum output energies of 0.9 mJ. Furthermore, the optimum gas pressure, the polarization and the transient behavior of optically pumped ammonia have been investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081068
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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