抄録
We determined 66 frequency differences (FD's) between rovibrational lines of methane at the 1.66-μm region. Following the technique developed by Nakagawa et al. [Opt. Lett. 20, 410 (1995)], we measured the FD's as the optical beat frequency between two external-cavity diode lasers locked at 1-MHz-wide saturated absorption dips of the methane lines. Even though the methane lines often overlap in Doppler-limited resolution, the spectrometer that we use resolves them and determines their FD's with better than 40-kHz precision. This fact demonstrates that the methane lines are promising candidates for frequency reference and that this technique has great potential for high-resolution molecular spectroscopy.
本文言語 | English |
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ページ(範囲) | 1356-1358 |
ページ数 | 3 |
ジャーナル | Optics Letters |
巻 | 22 |
号 | 17 |
DOI | |
出版ステータス | Published - 1997 9月 1 |
外部発表 | はい |
ASJC Scopus subject areas
- 原子分子物理学および光学