Metrological-grade tunable coherent source in the mid-infrared for molecular precision spectroscopy

被引：0
|
作者：
Insero, G. [1 ,2 ]
Clivati, C. [3 ]
D'Ambrosio, D. [1 ,2 ,3 ]
Pastor, P. Cancio [1 ,2 ]
Verde, M. [1 ,2 ,3 ]
Schunemann, P. G. [5 ]
Zondy, J-J [6 ]
Inguscio, M. [1 ,2 ]
Calonico, D. [3 ]
Levi, F. [3 ]
De Natale, P. [1 ,2 ,4 ]
Santambrogio, G. [1 ,2 ,3 ,4 ]
Borri, S. [1 ,2 ,4 ]
机构：
[1] CNR, INO, Largo E Fermi 6, I-50125 Florence, FI, Italy
[2] LENS, Via N Carrara 1, I-50019 Sesto Fiorentino, FI, Italy
[3] INRIM Ist Nazl Ric Metrol, I-10135 Turin, Italy
[4] Ist Nazl Fis Nucl, Sez Firenze, I-50019 Sesto Fiorentino, FI, Italy
[5] BAE Syst Inc, MER15-1813,POB 868, Nashua, NH 03061 USA
[6] Nazarbaev Univ, Sch Sci & Technol, Kabanbay Batyr 53, Astana 010000, Kazakhstan
来源：
NONLINEAR FREQUENCY GENERATION AND CONVERSION: MATERIALS AND DEVICES XVII | 2018年 / 10516卷
基金：
欧盟地平线“2020”;
关键词：
Nonlinear Crystals; Difference frequency generation; Laser stabilization; High-resolution spectroscopy; Frequency metrology; DIFFERENCE-FREQUENCY-GENERATION; CONTINUOUS-WAVE; LASER SPECTROSCOPY; COMB; RESONATORS; OPO;
D O I：
10.1117/12.2294025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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 mu m on a metastable state of CO molecuels with 11 digits of precision.
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页数：9
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