Abstract

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.

© 1997 Optical Society of America

Full Article  |  PDF Article
More Like This
Accurate optical frequency atlas of the 1.5-µm bands of acetylene

K. Nakagawa, M. de Labachelerie, Y. Awaji, and M. Kourogi
J. Opt. Soc. Am. B 13(12) 2708-2714 (1996)

Accurate transition frequency list of the ν3 band of methane from sub-Doppler resolution comb-referenced spectroscopy

Masashi Abe, Kana Iwakuni, Sho Okubo, and Hiroyuki Sasada
J. Opt. Soc. Am. B 30(4) 1027-1035 (2013)

Tunable carbon monoxide overtone laser sideband system for precision spectroscopy from 2.6 to 4.1 µm

M. Mürtz, B. Frech, P. Palm, R. Lotze, and W. Urban
Opt. Lett. 23(1) 58-60 (1998)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription