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    Comb-calibrated sub-Doppler spectroscopy with an external-cavity quantum cascade laser at 77 μm

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    oe-27-17-23785.pdf
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    Type
    Article
    Authors
    Alsaif, Bidoor
    Gatti, Davide
    Lamperti, Marco cc
    Laporta, Paolo
    Farooq, Aamir cc
    Marangoni, Marco
    KAUST Department
    Chemical Kinetics & Laser Sensors Laboratory
    Clean Combustion Research Center
    Electrical Engineering Program
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    OSR-2018-CARF-1975-06
    Date
    2019-08-05
    Online Publication Date
    2019-08-05
    Print Publication Date
    2019-08-19
    Permanent link to this record
    http://hdl.handle.net/10754/656525
    
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    Abstract
    We study the frequency noise and the referencing to a near-infrared frequency comb of a widely tunable external-cavity quantum-cascade-laser that shows a relatively narrow free-running emission linewidth of 1.7 MHz. The frequency locking of the laser to the comb further narrows its linewidth to 690 kHz and enables sub-Doppler spectroscopy on an N2O transition of the ν1 band near 7.7 μm with sub-MHz resolution and absolute frequency calibration. The combined uncertainty on the measured transition center is estimated to be less than 50 kHz
    Citation
    AlSaif, B., Gatti, D., Lamperti, M., Laporta, P., Farooq, A., & Marangoni, M. (2019). Comb-calibrated sub-Doppler spectroscopy with an external-cavity quantum cascade laser at 77 μm. Optics Express, 27(17), 23785. doi:10.1364/oe.27.023785
    Sponsors
    King Abdullah University of Science and Technology (OSR-2018-CARF-1975-06), Fondazione Cariplo and Regione Lombardia (2016-1428).
    Publisher
    The Optical Society
    Journal
    Optics Express
    DOI
    10.1364/oe.27.023785
    Additional Links
    https://www.osapublishing.org/abstract.cfm?URI=oe-27-17-23785
    ae974a485f413a2113503eed53cd6c53
    10.1364/oe.27.023785
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Electrical Engineering Program; Mechanical Engineering Program; Clean Combustion Research Center

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