A widely tunable 10-$\mu$m quantum cascade laser phase-locked to a state-of-the-art mid-infrared reference for precision molecular spectroscopy

Abstract

We report the coherent phase-locking of a quantum cascade laser (QCL) at 10-$\mu$m to the secondary frequency standard of this spectral region, a CO2 laser stabilized on a saturated absorption line of OsO4. The stability and accuracy of the standard are transferred to the QCL resulting in a line width of the order of 10 Hz, and leading to our knowledge to the narrowest QCL to date. The locked QCL is then used to perform absorption spectroscopy spanning 6 GHz of NH3 and methyltrioxorhenium, two species of interest for applications in precision measurements.

arXiv comment5 pages, 4 figures

References in corpus (19)

• Mid-infrared frequency combs
• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• Cold Molecule Spectroscopy for Constraining the Evolution of the Fine Structure Constant
• Progress in Atomic Fountains at LNE-SYRTE
• Stability of the proton-to-electron mass ratio
• Using Molecules to Measure Nuclear Spin-Dependent Parity Violation
• Observing the intrinsic linewidth of a quantum-cascade laser: beyond the Schawlow-Townes limit
• Progress toward a first observation of parity violation in chiral molecules by high-resolution laser spectroscopy
• A search for varying fundamental constants using Hz-level frequency measurements of cold CH molecules
• Probing weak force induced parity violation by high resolution mid-infrared molecular spectroscopy
• Optical spectrum analyzer with quantum limited noise floor
• Progress towards an accurate determination of the Boltzmann constant by Doppler spectroscopy
• Determination of the Boltzmann constant by laser spectroscopy as a basis for future measurements of the thermodynamic temperature
• Narrow-line phase-locked quantum cascade laser in the 9.2 micron range
• Mid-infrared laser phase-locking to a remote near-infrared frequency reference for high precision molecular spectroscopy
• A revised uncertainty budget for measuring the Boltzmann constant using the Doppler Broadening Technique on ammonia
• High resolution spectroscopy of methyltrioxorhenium: towards the observation of parity violation in chiral molecules
• Robust, frequency-stable and accurate mid-IR laser spectrometer based on frequency comb metrology of quantum cascade lasers up-converted in orientation-patterned GaAs
• HCOOH high resolution spectroscopy in the 9.18$\mu$m region

Cited by in corpus (17)

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• High-precision methanol spectroscopy with a widely tunable SI-traceable frequency-comb-based mid-infrared QCL
• A quantum cascade laser-based mid-IR frequency metrology system with ultra-narrow linewidth and $1\times 10^{-13}$-level frequency instability
• Measuring the Boltzmann constant by mid-infrared laser spectroscopy of ammonia
• Towards detection of the molecular parity violation in chiral Ru(acac)${}_3$ and Os(acac)${}_3$
• Absorption line shape recovery beyond the detection bandwidth limit: application to the precision spectroscopic measurement of the Boltzmann constant
• High-resolution mid-infrared spectroscopy of buffer-gas-cooled methyltrioxorhenium molecules
• Quantum cascade laser-pumped terahertz molecular lasers: frequency noise and phase-locking using a 1560nm frequency comb
• Highly coherent phase-lock of an 8.1 $\mu$m quantum cascade laser to a turn-key mid-IR frequency comb
• Linear probing of molecules at micrometric distances from a surface with sub-Doppler frequency resolution
• Heterodyne coherent detection of phase modulation in a mid-infrared unipolar device
• Near-to mid-IR spectral purity transfer with a tunable frequency comb: methanol frequency metrology over a record frequency span
• Laser spectroscopy of cold molecules
• Ultra-sensitive heterodyne detection at room temperature in the atmospheric windows
• Studying fundamental physics using quantum enabled technologies with trapped molecular ions
• Wavelength modulation laser spectroscopy of N${}_2$O at 17 $\mu$m