TY - JOUR
T1 - Absolute frequency measurement of the saturated absorption lines of methane in the 1.66 μm region
AU - Ishibashi, Chikako
AU - Kourogi, Motonobu
AU - Imai, Kazuhiro
AU - Widiyatmoko, Bambang
AU - Onae, Atsushi
AU - Sasada, Hiroyuki
N1 - Funding Information:
The authors are grateful to Prof. K. Nakagawa for his pioneering endeavours and thoughtful notice of his recent result prior to publication. We also thank K. Okumura and J. Yoda of NRLM for supplying the experimental apparatus. One of the authors (C.I.) would like to acknowledge the financial support from the Japan Promotion Society.
PY - 1999/3/15
Y1 - 1999/3/15
N2 - We have determined the absolute frequencies of the R(0) and Q(1) transitions of the 2ν3 band of 12CH4 in the 1.66-μm region to be 180.345 065 08(37) and 180.021 253 10(61) THz. The numbers in parentheses are the standard deviations in units of the last digit of the quoted frequencies. We have used the 1.54-μm saturated absorption line of 13C2H2 as a frequency reference and an optical frequency comb generator for bridging the frequency difference of 14 THz between the 1.66- and 1.54-μm radiations.
AB - We have determined the absolute frequencies of the R(0) and Q(1) transitions of the 2ν3 band of 12CH4 in the 1.66-μm region to be 180.345 065 08(37) and 180.021 253 10(61) THz. The numbers in parentheses are the standard deviations in units of the last digit of the quoted frequencies. We have used the 1.54-μm saturated absorption line of 13C2H2 as a frequency reference and an optical frequency comb generator for bridging the frequency difference of 14 THz between the 1.66- and 1.54-μm radiations.
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U2 - 10.1016/S0030-4018(99)00045-0
DO - 10.1016/S0030-4018(99)00045-0
M3 - Article
AN - SCOPUS:0032644568
SN - 0030-4018
VL - 161
SP - 223
EP - 226
JO - Optics Communications
JF - Optics Communications
IS - 4
ER -