1. Frequency-comb-referenced mid-infrared source for high-precision spectroscopy
- Author
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Thomas Fordell, Tuomas Hieta, Markku Vainio, Mikko Merimaa, Jari Peltola, Lauri Halonen, Department of Chemistry, and Molecular Science
- Subjects
OPO ,OPTICAL PARAMETRIC OSCILLATOR ,Materials science ,Spectrophotometry, Infrared ,116 Chemical sciences ,MU-M ,TRANSITIONS ,02 engineering and technology ,114 Physical sciences ,01 natural sciences ,law.invention ,010309 optics ,Frequency comb ,Optics ,law ,Reference Values ,Oscillometry ,0103 physical sciences ,SPECTROMETER ,Spectroscopy ,Spectrometer ,Amplifiers, Electronic ,business.industry ,Precision spectroscopy ,Optical Devices ,Equipment Design ,QUANTUM-CASCADE LASER ,SYNTHESIZER ,021001 nanoscience & nanotechnology ,Optical parametric amplifier ,Atomic and Molecular Physics, and Optics ,Equipment Failure Analysis ,RING-DOWN SPECTROSCOPY ,Wavelength ,Refractometry ,Optical parametric oscillator ,Computer-Aided Design ,0210 nano-technology ,business ,Quantum cascade laser - Abstract
We report on a tunable continuous-wave mid-infrared optical parametric oscillator (OPO), which is locked to a fully stabilized near-infrared optical frequency comb using a frequency doubling scheme. The OPO is used for 40 GHz mode-hop-free, frequency-comb-locked scans in the wavelength region between 2.7 and 3.4 μm. We demonstrate the applicability of the method to high-precision cavity-ring-down spectroscopy of nitrous oxide (N2O) and water (H2O) at 2.85 μm and of methane (CH4) at 3.2 μm.
- Published
- 2014