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  • 1
    Electronic Resource
    Electronic Resource
    Optically stabilized tunable diode-laser system for saturation spectroscopy (1995)
    Springer
    Applied physics 60 (1995), S. 31-37 
    Details
    ISSN: 1432-0649
    Keywords: 42.55.Px ; 42.62.Fi ; 07.65.Gj
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present an optically stabilized lead-salt diode-laser system which is the nucleus of a very-high-resolution instrument for sub-Doppler molecular spectroscopy in the mid-infrared. By application of external optical feedback, we have narrowed the diode-laser linewidth by two orders of magnitude, yielding a spectral width of less than 200 kHz. The diode- laser frequency is stabilized and controlled via the external reflector by variable-frequency offset-locking the diode-laser to a CO laser frequency. This substantial improvement in the spectral properties enabled us to perform a Lamb-dip experiment on a carbonyl sulfide (OCS) absorption line near 1985 cm−1. We were able to detect a saturated dispersion signal at low pressure (5 Pa) with a signal-to-noise ratio of several thousand. The present paper describes the unique features of the optically stabilized tunable diode-laser system and its use as a spectroscopic tool for sub-Doppler applications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01082069
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  • 2
    Electronic Resource
    Electronic Resource
    Heterodyne measurements of hot bands and isotopic transitions of N2O near 7.8 µm (1987)
    Springer
    The European physical journal 5 (1987), S. 351-358 
    Details
    ISSN: 1434-6079
    Keywords: 33.20Ea ; 35.20Pa ; 35.80+s
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Heterodyne frequency measurements are reported for absorption transitions of N2O in the frequency range from 1257 to 1335 cm−1. The measurements use a CO laser as a transfer oscillator whose frequency is measured directly against combinations of frequencies of two stabilized CO2 lasers whose frequencies are well known. A tunable diode laser is locked to the N2O absorption feature and the frequency difference is measured between the diode laser and the CO laser. Thev 3 fundamental bands of the15N14N16O and14N15N16O isotopes are reported. Measurements are also given for the 0002–0001, 0201–0200, and 0221–0220 vibrational transitions of N2O. A table of frequencies is given for the 0002–0000 band near 2560 cm−1 based on these and earlier measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01385466
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    Paper (German National Licenses)
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