Abstract

We present a thorough analysis of the signal line shapes of Fourier-transform-based noise-immune cavity-enhanced optical frequency comb spectroscopy (NICE-OFCS). We discuss the signal dependence on the ratio of the modulation frequency, fm, to the molecular linewidth, Γ. We compare a full model of the signals and a simplified absorption-like analytical model that has high accuracy for low fm/Γ ratios and is much faster to compute. We verify the theory experimentally by measuring and fitting the NICE-OFCS spectra of CO2 at 1575 nm using a system based on an Er:fiber femtosecond laser and a cavity with a finesse of 11000.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Wavelength-modulated noise-immune cavity-enhanced optical heterodyne molecular spectroscopy signal line shapes in the Doppler limit

Aleksandra Foltynowicz, Weiguang Ma, Florian M. Schmidt, and Ove Axner
J. Opt. Soc. Am. B 26(7) 1384-1394 (2009)

Measurement of pressure-broadened, ultraweak transitions with noise-immune cavity-enhanced optical heterodyne molecular spectroscopy

Nicola J. van Leeuwen and Andrew C. Wilson
J. Opt. Soc. Am. B 21(10) 1713-1721 (2004)

Use of etalon-immune distances to reduce the influence of background signals in frequency-modulation spectroscopy and noise-immune cavity-enhanced optical heterodyne molecular spectroscopy

Patrick Ehlers, Alexandra C. Johansson, Isak Silander, Aleksandra Foltynowicz, and Ove Axner
J. Opt. Soc. Am. B 31(12) 2938-2945 (2014)

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 (8)

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

Equations (8)

You do not have subscription access to this journal. Equations 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