Sub-Doppler resolution mid-infrared spectroscopy using a difference-frequency-generation source spectrally narrowed by laser linewidth transfer

Hideyuki Sera; Masashi Abe; Kana Iwakuni; Sho Okubo; Hajime Inaba; Feng Lei Hong; Hiroyuki Sasada

doi:10.1364/OL.40.005467

Sub-Doppler resolution mid-infrared spectroscopy using a difference-frequency-generation source spectrally narrowed by laser linewidth transfer

Hideyuki Sera, Masashi Abe, Kana Iwakuni, Sho Okubo, Hajime Inaba, Feng Lei Hong, Hiroyuki Sasada

Department of Physics

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

5 Citations (Scopus)

Abstract

The spectral linewidth of a 3.28 μm difference-frequency-generation source has been reduced to 3.5 kHz using a laser linewidth transfer technique [Opt. Express 21, 7891 (2013)]. We use an optical frequency comb with a broad servo bandwidth to transfer a narrow linewidth of a pump laser, a 1.06 μm Nd: YAG laser, to a signal laser, a 1.57 μm external-cavity laser diode. This source enables us to record the Lamb dip of the ν₃ band R(2) E transition of methane with a molecular spectral linewidth of 21 kHz while the frequency axis is absolutely calibrated.

Original language	English
Pages (from-to)	5467-5470
Number of pages	4
Journal	Optics Letters
Volume	40
Issue number	23
DOIs	https://doi.org/10.1364/OL.40.005467
Publication status	Published - 2015 Dec 1

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OL.40.005467

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abstract = "The spectral linewidth of a 3.28 μm difference-frequency-generation source has been reduced to 3.5 kHz using a laser linewidth transfer technique [Opt. Express 21, 7891 (2013)]. We use an optical frequency comb with a broad servo bandwidth to transfer a narrow linewidth of a pump laser, a 1.06 μm Nd: YAG laser, to a signal laser, a 1.57 μm external-cavity laser diode. This source enables us to record the Lamb dip of the ν3 band R(2) E transition of methane with a molecular spectral linewidth of 21 kHz while the frequency axis is absolutely calibrated.",

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AU - Sera, Hideyuki

AU - Abe, Masashi

AU - Iwakuni, Kana

AU - Okubo, Sho

AU - Inaba, Hajime

AU - Hong, Feng Lei

AU - Sasada, Hiroyuki

PY - 2015/12/1

Y1 - 2015/12/1

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AB - The spectral linewidth of a 3.28 μm difference-frequency-generation source has been reduced to 3.5 kHz using a laser linewidth transfer technique [Opt. Express 21, 7891 (2013)]. We use an optical frequency comb with a broad servo bandwidth to transfer a narrow linewidth of a pump laser, a 1.06 μm Nd: YAG laser, to a signal laser, a 1.57 μm external-cavity laser diode. This source enables us to record the Lamb dip of the ν3 band R(2) E transition of methane with a molecular spectral linewidth of 21 kHz while the frequency axis is absolutely calibrated.

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Sub-Doppler resolution mid-infrared spectroscopy using a difference-frequency-generation source spectrally narrowed by laser linewidth transfer

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