Vittorio D'Agostino, Eugenio Fasci, Muhammad Asad Khan, Stefania Gravina, Livio Gianfrani, Antonio Castrillo
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引用次数: 0
Abstract
We report on a comb-locked cavity ring-down spectrometer developed for high-precision molecular spectroscopy at 2 μm. It is based on the use of an external-cavity diode laser that is offset-frequency locked to the signal output of a singly-resonant optical parametric oscillator. This latter acts as a reference laser, being locked to a self-referenced optical frequency comb, which in turn is stabilized against a GPS-disciplined Rb-clock. The performance of the spectrometer is investigated by probing a pair of N2O transitions belonging to hot vibrational bands. One of these has never, to the best of our knowledge, been observed before, and is included in the N2O line list of the ExoMol database. Absolute center frequencies are retrieved with a 1-σ global uncertainty of 108 kHz.
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The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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