TY - JOUR
T1 - High accuracy line positions of the ν 1 fundamental band of 14 N 2 16 O
AU - Alsaif, Bidoor
AU - Lamperti, Marco
AU - Gatti, Davide
AU - Laporta, Paolo
AU - Fermann, Martin
AU - Farooq, Aamir
AU - Lyulin, Oleg
AU - Campargue, Alain
AU - Marangoni, Marco
N1 - KAUST Repository Item: Exported on 2020-04-23
PY - 2018/3/8
Y1 - 2018/3/8
N2 - The ν1 fundamental band of N2O is examined by a novel spectrometer that relies on the frequency locking of an external-cavity quantum cascade laser around 7.8 μm to a near-infrared Tm:based frequency comb at 1.9 μm. Due to the large tunability, nearly 70 lines in the 1240 – 1310 cm−1 range of the ν1 band of N2O, from P(40) to R(31), are for the first time measured with an absolute frequency calibration and an uncertainty from 62 to 180 kHz, depending on the line. Accurate values of the spectroscopic constants of the upper state are derived from a fit of the line centers (rms ≈ 4.8 × 10−6 cm−1 or 144 kHz). The ν1 transitions presently measured in a Doppler regime validate high accuracy predictions based on sub-Doppler measurements of the ν3 and ν3-ν1 transitions.
AB - The ν1 fundamental band of N2O is examined by a novel spectrometer that relies on the frequency locking of an external-cavity quantum cascade laser around 7.8 μm to a near-infrared Tm:based frequency comb at 1.9 μm. Due to the large tunability, nearly 70 lines in the 1240 – 1310 cm−1 range of the ν1 band of N2O, from P(40) to R(31), are for the first time measured with an absolute frequency calibration and an uncertainty from 62 to 180 kHz, depending on the line. Accurate values of the spectroscopic constants of the upper state are derived from a fit of the line centers (rms ≈ 4.8 × 10−6 cm−1 or 144 kHz). The ν1 transitions presently measured in a Doppler regime validate high accuracy predictions based on sub-Doppler measurements of the ν3 and ν3-ν1 transitions.
UR - http://hdl.handle.net/10754/627327
UR - http://www.sciencedirect.com/science/article/pii/S002240731830058X
UR - http://www.scopus.com/inward/record.url?scp=85044470292&partnerID=8YFLogxK
U2 - 10.1016/j.jqsrt.2018.03.005
DO - 10.1016/j.jqsrt.2018.03.005
M3 - Article
AN - SCOPUS:85044470292
VL - 211
SP - 172
EP - 178
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
SN - 0022-4073
ER -