Design of cavity-enhanced absorption cell for reducing transit-time broadening

Masashi Abe; Kana Iwakuni; Sho Okubo; Hiroyuki Sasada

doi:10.1364/OL.39.005277

Design of cavity-enhanced absorption cell for reducing transit-time broadening

Masashi Abe, Kana Iwakuni, Sho Okubo, Hiroyuki Sasada

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

To reduce the linewidth of Lamb dips, we introduce a cavity-enhanced absorption cell (CEAC) coupled with a Gaussian beam with a 1.9-mm 1/e²radius at the beam waist for the reduction of transit-time broadening. We state that transit-time broadening depends only on the beam radius at the beam waist. This fact is useful for the design of the CEAC, and a pair of concave and convex mirrors is thereby employed. We have carried out sub-Doppler resolution spectroscopy of the ν₃band of CH₄and the ν₁band of CH₃D using a difference-frequency-generation source and the CEAC, and the recorded Lamb dips narrow to 80 kHz (HWHM).

Original language	English
Pages (from-to)	5277-5280
Number of pages	4
Journal	Optics Letters
Volume	39
Issue number	18
DOIs	https://doi.org/10.1364/OL.39.005277
Publication status	Published - 2014 Sept 15
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "Design of cavity-enhanced absorption cell for reducing transit-time broadening",

abstract = "To reduce the linewidth of Lamb dips, we introduce a cavity-enhanced absorption cell (CEAC) coupled with a Gaussian beam with a 1.9-mm 1/e2radius at the beam waist for the reduction of transit-time broadening. We state that transit-time broadening depends only on the beam radius at the beam waist. This fact is useful for the design of the CEAC, and a pair of concave and convex mirrors is thereby employed. We have carried out sub-Doppler resolution spectroscopy of the ν3band of CH4and the ν1band of CH3D using a difference-frequency-generation source and the CEAC, and the recorded Lamb dips narrow to 80 kHz (HWHM).",

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AU - Abe, Masashi

AU - Iwakuni, Kana

AU - Okubo, Sho

AU - Sasada, Hiroyuki

PY - 2014/9/15

Y1 - 2014/9/15

N2 - To reduce the linewidth of Lamb dips, we introduce a cavity-enhanced absorption cell (CEAC) coupled with a Gaussian beam with a 1.9-mm 1/e2radius at the beam waist for the reduction of transit-time broadening. We state that transit-time broadening depends only on the beam radius at the beam waist. This fact is useful for the design of the CEAC, and a pair of concave and convex mirrors is thereby employed. We have carried out sub-Doppler resolution spectroscopy of the ν3band of CH4and the ν1band of CH3D using a difference-frequency-generation source and the CEAC, and the recorded Lamb dips narrow to 80 kHz (HWHM).

AB - To reduce the linewidth of Lamb dips, we introduce a cavity-enhanced absorption cell (CEAC) coupled with a Gaussian beam with a 1.9-mm 1/e2radius at the beam waist for the reduction of transit-time broadening. We state that transit-time broadening depends only on the beam radius at the beam waist. This fact is useful for the design of the CEAC, and a pair of concave and convex mirrors is thereby employed. We have carried out sub-Doppler resolution spectroscopy of the ν3band of CH4and the ν1band of CH3D using a difference-frequency-generation source and the CEAC, and the recorded Lamb dips narrow to 80 kHz (HWHM).

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Design of cavity-enhanced absorption cell for reducing transit-time broadening

Abstract

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