Cavity-enhanced dual-comb spectroscopy

Birgitta Bernhardt, Akira Ozawa, Patrick Jacquet, Marion Jacquey, Yohei Kobayashi, Thomas Udem, Ronald Holzwarth, Guy Guelachvili, Theodor W. Hänsch, Nathalie Picqué

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The sensitivity of molecular fingerprinting is dramatically improved when the absorbing sample is placed in a high-finesse optical cavity, because the effective path length is increased. When the equidistant lines from a laser frequency comb are simultaneously injected into the cavity over a large spectral range, multiple trace gases may be identified1 within a few milliseconds. However, efficient analysis of the light transmitted through the cavity remains challenging. Here, a novel approach—cavity-enhanced, frequency-comb, Fourier-transform spectroscopy—fully overcomes this difficulty and enables measurement of ultrasensitive, broad-bandwidth, high-resolution spectra within a few tens of microseconds without any need for detector arrays, potentially from the terahertz to ultraviolet regions. Within a period of just 18 µs, we recorded the spectra of the ammonia 1.0 µm overtone bands comprising 1,500 spectral elements and spanning 20 nm, with a resolution of 4.5 GHz and a noise equivalent absorption at 1 s averaging of 1 × 10−10 cm−1 Hz−1/2, thus opening a route to time-resolved spectroscopy of rapidly evolving single events.
Original languageEnglish
Pages (from-to)55 - 57
Number of pages3
JournalNature photonics
Volume4
DOIs
Publication statusPublished - 29 Nov 2009

Fields of Expertise

  • Advanced Materials Science

Cite this

Bernhardt, B., Ozawa, A., Jacquet, P., Jacquey, M., Kobayashi, Y., Udem, T., ... Picqué, N. (2009). Cavity-enhanced dual-comb spectroscopy. Nature photonics, 4, 55 - 57. https://doi.org/10.1038/nphoton.2009.217

Cavity-enhanced dual-comb spectroscopy. / Bernhardt, Birgitta; Ozawa, Akira; Jacquet, Patrick; Jacquey, Marion; Kobayashi, Yohei; Udem, Thomas; Holzwarth, Ronald; Guelachvili, Guy; Hänsch, Theodor W.; Picqué, Nathalie.

In: Nature photonics, Vol. 4, 29.11.2009, p. 55 - 57.

Research output: Contribution to journalArticleResearchpeer-review

Bernhardt, B, Ozawa, A, Jacquet, P, Jacquey, M, Kobayashi, Y, Udem, T, Holzwarth, R, Guelachvili, G, Hänsch, TW & Picqué, N 2009, 'Cavity-enhanced dual-comb spectroscopy' Nature photonics, vol. 4, pp. 55 - 57. https://doi.org/10.1038/nphoton.2009.217
Bernhardt B, Ozawa A, Jacquet P, Jacquey M, Kobayashi Y, Udem T et al. Cavity-enhanced dual-comb spectroscopy. Nature photonics. 2009 Nov 29;4:55 - 57. https://doi.org/10.1038/nphoton.2009.217
Bernhardt, Birgitta ; Ozawa, Akira ; Jacquet, Patrick ; Jacquey, Marion ; Kobayashi, Yohei ; Udem, Thomas ; Holzwarth, Ronald ; Guelachvili, Guy ; Hänsch, Theodor W. ; Picqué, Nathalie. / Cavity-enhanced dual-comb spectroscopy. In: Nature photonics. 2009 ; Vol. 4. pp. 55 - 57.
@article{5d13044395d74003a09c808d68695df9,
title = "Cavity-enhanced dual-comb spectroscopy",
abstract = "The sensitivity of molecular fingerprinting is dramatically improved when the absorbing sample is placed in a high-finesse optical cavity, because the effective path length is increased. When the equidistant lines from a laser frequency comb are simultaneously injected into the cavity over a large spectral range, multiple trace gases may be identified1 within a few milliseconds. However, efficient analysis of the light transmitted through the cavity remains challenging. Here, a novel approach—cavity-enhanced, frequency-comb, Fourier-transform spectroscopy—fully overcomes this difficulty and enables measurement of ultrasensitive, broad-bandwidth, high-resolution spectra within a few tens of microseconds without any need for detector arrays, potentially from the terahertz to ultraviolet regions. Within a period of just 18 µs, we recorded the spectra of the ammonia 1.0 µm overtone bands comprising 1,500 spectral elements and spanning 20 nm, with a resolution of 4.5 GHz and a noise equivalent absorption at 1 s averaging of 1 × 10−10 cm−1 Hz−1/2, thus opening a route to time-resolved spectroscopy of rapidly evolving single events.",
author = "Birgitta Bernhardt and Akira Ozawa and Patrick Jacquet and Marion Jacquey and Yohei Kobayashi and Thomas Udem and Ronald Holzwarth and Guy Guelachvili and H{\"a}nsch, {Theodor W.} and Nathalie Picqu{\'e}",
year = "2009",
month = "11",
day = "29",
doi = "10.1038/nphoton.2009.217",
language = "English",
volume = "4",
pages = "55 -- 57",
journal = "Nature photonics",
issn = "1749-4885",
publisher = "Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. SN -",

}

TY - JOUR

T1 - Cavity-enhanced dual-comb spectroscopy

AU - Bernhardt, Birgitta

AU - Ozawa, Akira

AU - Jacquet, Patrick

AU - Jacquey, Marion

AU - Kobayashi, Yohei

AU - Udem, Thomas

AU - Holzwarth, Ronald

AU - Guelachvili, Guy

AU - Hänsch, Theodor W.

AU - Picqué, Nathalie

PY - 2009/11/29

Y1 - 2009/11/29

N2 - The sensitivity of molecular fingerprinting is dramatically improved when the absorbing sample is placed in a high-finesse optical cavity, because the effective path length is increased. When the equidistant lines from a laser frequency comb are simultaneously injected into the cavity over a large spectral range, multiple trace gases may be identified1 within a few milliseconds. However, efficient analysis of the light transmitted through the cavity remains challenging. Here, a novel approach—cavity-enhanced, frequency-comb, Fourier-transform spectroscopy—fully overcomes this difficulty and enables measurement of ultrasensitive, broad-bandwidth, high-resolution spectra within a few tens of microseconds without any need for detector arrays, potentially from the terahertz to ultraviolet regions. Within a period of just 18 µs, we recorded the spectra of the ammonia 1.0 µm overtone bands comprising 1,500 spectral elements and spanning 20 nm, with a resolution of 4.5 GHz and a noise equivalent absorption at 1 s averaging of 1 × 10−10 cm−1 Hz−1/2, thus opening a route to time-resolved spectroscopy of rapidly evolving single events.

AB - The sensitivity of molecular fingerprinting is dramatically improved when the absorbing sample is placed in a high-finesse optical cavity, because the effective path length is increased. When the equidistant lines from a laser frequency comb are simultaneously injected into the cavity over a large spectral range, multiple trace gases may be identified1 within a few milliseconds. However, efficient analysis of the light transmitted through the cavity remains challenging. Here, a novel approach—cavity-enhanced, frequency-comb, Fourier-transform spectroscopy—fully overcomes this difficulty and enables measurement of ultrasensitive, broad-bandwidth, high-resolution spectra within a few tens of microseconds without any need for detector arrays, potentially from the terahertz to ultraviolet regions. Within a period of just 18 µs, we recorded the spectra of the ammonia 1.0 µm overtone bands comprising 1,500 spectral elements and spanning 20 nm, with a resolution of 4.5 GHz and a noise equivalent absorption at 1 s averaging of 1 × 10−10 cm−1 Hz−1/2, thus opening a route to time-resolved spectroscopy of rapidly evolving single events.

U2 - 10.1038/nphoton.2009.217

DO - 10.1038/nphoton.2009.217

M3 - Article

VL - 4

SP - 55

EP - 57

JO - Nature photonics

JF - Nature photonics

SN - 1749-4885

ER -