Observation of coherent two-photon emission from the first vibrationally excited state of hydrogen molecules

Yuki Miyamoto; Hideaki Hara; Susumu Kuma; Takahiko Masuda; Itsuo Nakano; Chiaki Ohae; Noboru Sasao; Minoru Tanaka; Satoshi Uetake; Akihiro Yoshimi; Koji Yoshimura; Motohiko Yoshimura

doi:10.1093/ptep/ptu152

Observation of coherent two-photon emission from the first vibrationally excited state of hydrogen molecules

Yuki Miyamoto, Hideaki Hara, Susumu Kuma, Takahiko Masuda, Itsuo Nakano, Chiaki Ohae, Noboru Sasao, Minoru Tanaka, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

Research Institute for Interdisciplinary Science

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

22 Citations (Scopus)

Abstract

In this paper, we describe an experiment which was conducted to explore the macro-coherent amplification mechanism using a two-photon emission process from the first vibrationally excited state of the para-hydrogen molecule. Large coherence in the initial state was prepared by the adiabatic Raman method, and the lowest Stokes sideband was used as a trigger field. We observed coherent two-photon emission consistent with the expectation of the Maxwell-Bloch equation derived for the process, whose rate is larger by many orders of magnitude than that of spontaneous emission.

Original language	English
Article number	113C01
Journal	Progress of Theoretical and Experimental Physics
Volume	2014
Issue number	11
DOIs	https://doi.org/10.1093/ptep/ptu152
Publication status	Published - 2014

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1093/ptep/ptu152

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Miyamoto, Y., Hara, H., Kuma, S., Masuda, T., Nakano, I., Ohae, C., Sasao, N., Tanaka, M., Uetake, S., Yoshimi, A., Yoshimura, K., & Yoshimura, M. (2014). Observation of coherent two-photon emission from the first vibrationally excited state of hydrogen molecules. Progress of Theoretical and Experimental Physics, 2014(11), [113C01]. https://doi.org/10.1093/ptep/ptu152

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abstract = "In this paper, we describe an experiment which was conducted to explore the macro-coherent amplification mechanism using a two-photon emission process from the first vibrationally excited state of the para-hydrogen molecule. Large coherence in the initial state was prepared by the adiabatic Raman method, and the lowest Stokes sideband was used as a trigger field. We observed coherent two-photon emission consistent with the expectation of the Maxwell-Bloch equation derived for the process, whose rate is larger by many orders of magnitude than that of spontaneous emission.",

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AU - Miyamoto, Yuki

AU - Hara, Hideaki

AU - Kuma, Susumu

AU - Masuda, Takahiko

AU - Nakano, Itsuo

AU - Ohae, Chiaki

AU - Sasao, Noboru

AU - Tanaka, Minoru

AU - Uetake, Satoshi

AU - Yoshimi, Akihiro

AU - Yoshimura, Koji

AU - Yoshimura, Motohiko

PY - 2014

Y1 - 2014

N2 - In this paper, we describe an experiment which was conducted to explore the macro-coherent amplification mechanism using a two-photon emission process from the first vibrationally excited state of the para-hydrogen molecule. Large coherence in the initial state was prepared by the adiabatic Raman method, and the lowest Stokes sideband was used as a trigger field. We observed coherent two-photon emission consistent with the expectation of the Maxwell-Bloch equation derived for the process, whose rate is larger by many orders of magnitude than that of spontaneous emission.

AB - In this paper, we describe an experiment which was conducted to explore the macro-coherent amplification mechanism using a two-photon emission process from the first vibrationally excited state of the para-hydrogen molecule. Large coherence in the initial state was prepared by the adiabatic Raman method, and the lowest Stokes sideband was used as a trigger field. We observed coherent two-photon emission consistent with the expectation of the Maxwell-Bloch equation derived for the process, whose rate is larger by many orders of magnitude than that of spontaneous emission.

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JO - Progress of Theoretical and Experimental Physics

JF - Progress of Theoretical and Experimental Physics

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Observation of coherent two-photon emission from the first vibrationally excited state of hydrogen molecules

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