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Titolo:
Wavenumber measurements of CO2 transitions in 1.5-mu m atmospheric window using an external-cavity diode laser
Autore:
Chou, CC; Lin, T; Shy, JT;
Indirizzi:
Feng Chia Univ, Phys Teaching & Res Ctr, Taichung 40724, Taiwan Feng Chia Univ Taichung Taiwan 40724 g & Res Ctr, Taichung 40724, Taiwan Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan Natl Tsing Hua UnivHsinchu Taiwan 30013 ept Phys, Hsinchu 30013, Taiwan
Titolo Testata:
JOURNAL OF MOLECULAR SPECTROSCOPY
fascicolo: 1, volume: 205, anno: 2001,
pagine: 122 - 127
SICI:
0022-2852(200101)205:1<122:WMOCTI>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
ABSORPTION-LINES; MU-M; SPECTROSCOPY; (C2H2)-C-13; PHYSICS; BANDS;
Keywords:
external-cavity diode laser; CO2; wavenumber measurements; C2H2; molecular constants;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Chou, CC Dai Yeh Univ, Dept Elect Engn, Chang Hwa 51501, Taiwan Dai Yeh Univ Chang Hwa Taiwan 51501 gn, Chang Hwa 51501, Taiwan
Citazione:
C.C. Chou et al., "Wavenumber measurements of CO2 transitions in 1.5-mu m atmospheric window using an external-cavity diode laser", J MOL SPECT, 205(1), 2001, pp. 122-127

Abstract

Using an external-cavity diode laser (ECDL) as the light source, we have observed the spectrum of CO2 in the 1.5-mum atmospheric window including the(30 degrees1)(1) <-- (00 degrees0) and (31(1)1)(1) <-- (01(1)0)(1) bands. Good signal-to-noise ratio allowed us to lock the frequency of our ECDL to the absorption line centers. Wavenumber measurements of the transitions with accuracy about 6.6 x 10(-4) cm(-1) are made with the help of a precision wavemeter calibrated to the accurate C2H2 frequency references in the 1.5-mum wavelength region. Molecular constants are obtained by making the least-squares fits of the measured transition wavenumbers. The rotational and centrifugal distortion constants are consistent with the previous results using high-resolution Fourier transform spectroscopy. However, the band centersare different with previous results by several thousandth reciprocal centimeters. (C) 2001 Academic Press.

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Documento generato il 22/09/20 alle ore 17:14:28