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Proceedings Paper

Metrological-grade tunable coherent source in the mid-infrared for molecular precision spectroscopy
Author(s): G. Insero; C. Clivati; D. D'Ambrosio; P. Cancio Pastor; M. Verde; P. G. Schunemann; J.-J. Zondy; M. Inguscio; D. Calonico; F. Levi; P. De Natale; G. Santambrogio; S. Borri
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Paper Abstract

We report on a metrological-grade mid-IR source with a 10–14 short-term instability for high-precision spectroscopy. Our source is based on the combination of a quantum cascade laser and a coherent radiation obtained by difference-frequency generation in an orientation-patterned gallium phosphide (OP-GaP) crystal. The pump and signal lasers are locked to an optical frequency comb referenced to the primary frequency standard via an optical fiber link. We demonstrate the robustness of the apparatus by measuring a vibrational transition around 6 μm on a metastable state of CO molecuels with 11 digits of precision.

Paper Details

Date Published: 15 February 2018
PDF: 9 pages
Proc. SPIE 10516, Nonlinear Frequency Generation and Conversion: Materials and Devices XVII, 105160O (15 February 2018); doi: 10.1117/12.2294025
Show Author Affiliations
G. Insero, CNR, Istituto Nazionale di Ottica (Italy)
C. Clivati, Istituto Nazionale di Ricerca Metrologica (Italy)
D. D'Ambrosio, CNR, Istituto Nazionale di Ottica (Italy)
Istituto Nazionale di Ricerca Metrologica (Italy)
P. Cancio Pastor, CNR, Istituto Nazionale di Ottica (Italy)
M. Verde, CNR, Istituto Nazionale di Ottica (Italy)
Istituto Nazionale di Recerci Metrologica (Italy)
P. G. Schunemann, BAE Systems (United States)
J.-J. Zondy, Nazarbayev Univ. (Kazakhstan)
M. Inguscio, CNR, Istituto Nazionale di Ottica (Italy)
D. Calonico, Istituto Nazionale di Ricerca Metrologica (Italy)
F. Levi, Istituto Nazionale di Ricerca Metrologica (Italy)
P. De Natale, CNR, Istituto Nazionale di Ottica (Italy)
G. Santambrogio, CNR, Instituto Nazionale di Ottica (Italy)
Istituto Nazionale di Ricerca Metrologica (Italy)
INFN (Italy)
S. Borri, CNR, Istituto Nazionale di Ottica (Italy)
INFN (Italy)


Published in SPIE Proceedings Vol. 10516:
Nonlinear Frequency Generation and Conversion: Materials and Devices XVII
Konstantin L. Vodopyanov; Kenneth L. Schepler, Editor(s)

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