Vernier frequency sampling: a new tuning approach in spectroscopy—application to multi-wavelength integrated path DIAL

We present novel frequency tuning methods for broadband mid-infrared spectroscopy that take advantage of the unique frequency sampling properties of our recently developed “nested dual-cavity doubly resonant optical parametric oscillator” (NesCOPO). These methods, referred to as Vernier frequency sa...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2012-06, Vol.107 (3), p.643-647
Main Authors: Hardy, B., Raybaut, M., Dherbecourt, J. B., Melkonian, J. M., Godard, A., Mohamed, A. K., Lefebvre, M.
Format: Article
Language:English
Subjects:
Engineering
Lasers
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Rapid Communication
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Summary:We present novel frequency tuning methods for broadband mid-infrared spectroscopy that take advantage of the unique frequency sampling properties of our recently developed “nested dual-cavity doubly resonant optical parametric oscillator” (NesCOPO). These methods, referred to as Vernier frequency sampling, enable mode-hop tuning with an adjustable virtual-cavity intermode spacing. Both frequency resolution and span are widely adjustable and can be tailored to fulfill the requirements either for broadband spectroscopy (>50 cm −1 spectral coverage) at low resolution or for high resolution (
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-012-5039-0