Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Direct phase-locking of a 8.6-μm quantum cascade laser to a mid-IR optical frequency comb: application to precision spectroscopy of N2O

Not Accessible

Your library or personal account may give you access

Abstract

We developed a high-precision spectroscopic system at 8.6 μm based on direct heterodyne detection and phase-locking of a room-temperature quantum-cascade-laser against an harmonic, 250-MHz mid-IR frequency comb obtained by difference-frequency generation. The 30dB signal-to-noise ratio of the detected beat-note together with the achieved closed-loop locking bandwidth of 500kHz allows for a residual integrated phase noise of 0.78 rad (1 Hz–5 MHz), for an ultimate resolution of 21kHz, limited by the measured linewidth of the mid-IR comb. The system was used to perform absolute measurement of line-center frequencies for the rotational components of the ν2 vibrational band of N2O, with a relative precision of 3×1010.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Coherent phase lock of a 9 μm quantum cascade laser to a 2 μm thulium optical frequency comb

Andrew A. Mills, Davide Gatti, Jie Jiang, Christian Mohr, Will Mefford, Livio Gianfrani, Martin Fermann, Ingmar Hartl, and Marco Marangoni
Opt. Lett. 37(19) 4083-4085 (2012)

Absolute spectroscopy of N2O near 4.5 μm with a comb-calibrated, frequency-swept quantum cascade laser spectrometer

Kevin Knabe, Paul A. Williams, Fabrizio R. Giorgetta, Michael B. Radunsky, Chris M. Armacost, Sam Crivello, and Nathan R. Newbury
Opt. Express 21(1) 1020-1029 (2013)

Quantum cascade laser-based mid-IR frequency metrology system with ultra-narrow linewidth and 1  ×  10−13-level frequency instability

Michael G. Hansen, Evangelos Magoulakis, Qun-Feng Chen, Ingo Ernsting, and Stephan Schiller
Opt. Lett. 40(10) 2289-2292 (2015)

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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

Figures (5)

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

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

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved