Coherent two-photon emission from hydrogen molecules excited by counter-propagating laser pulses

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We observed two-photon emission (TPE) signal from the first vibrationally excited state of parahydrogen gas coherently excited by counter-propagating laser pulses. A single narrow-linewidth laser source has roles in the excitation of the parahydrogen molecules and the induction of the TPE process. We measured dependences of the signal energy on the detuning, target gas pressure, and input pulse energies. These results are qualitatively consistent with those obtained by numerical simulations based on Maxwell-Bloch equations with one spatial dimension and one temporal dimension. This study of the TPE process in the counter-propagating injection scheme is an important step toward neutrino mass spectroscopy.

Original languageEnglish
Article number045401
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume52
Issue number4
DOIs
Publication statusPublished - Jan 30 2019

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counters
photons
hydrogen
pulses
lasers
molecules
excitation
gas pressure
induction
mass spectroscopy
neutrinos
injection
energy
gases
simulation

Keywords

  • Coherence
  • Counter-propagating laser injection
  • Maxwell-Bolch equations
  • Parahydrogen
  • Two-photon emission

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

Cite this

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title = "Coherent two-photon emission from hydrogen molecules excited by counter-propagating laser pulses",
abstract = "We observed two-photon emission (TPE) signal from the first vibrationally excited state of parahydrogen gas coherently excited by counter-propagating laser pulses. A single narrow-linewidth laser source has roles in the excitation of the parahydrogen molecules and the induction of the TPE process. We measured dependences of the signal energy on the detuning, target gas pressure, and input pulse energies. These results are qualitatively consistent with those obtained by numerical simulations based on Maxwell-Bloch equations with one spatial dimension and one temporal dimension. This study of the TPE process in the counter-propagating injection scheme is an important step toward neutrino mass spectroscopy.",
keywords = "Coherence, Counter-propagating laser injection, Maxwell-Bolch equations, Parahydrogen, Two-photon emission",
author = "Takahiro Hiraki and Hideaki Hara and Yuki Miyamoto and Kei Imamura and Takahiko Masuda and Noboru Sasao and Satoshi Uetake and Akihiro Yoshimi and Koji Yoshimura and Motohiko Yoshimura",
year = "2019",
month = "1",
day = "30",
doi = "10.1088/1361-6455/aafbd0",
language = "English",
volume = "52",
journal = "Journal of Physics B: Atomic, Molecular and Optical Physics",
issn = "0953-4075",
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TY - JOUR

T1 - Coherent two-photon emission from hydrogen molecules excited by counter-propagating laser pulses

AU - Hiraki, Takahiro

AU - Hara, Hideaki

AU - Miyamoto, Yuki

AU - Imamura, Kei

AU - Masuda, Takahiko

AU - Sasao, Noboru

AU - Uetake, Satoshi

AU - Yoshimi, Akihiro

AU - Yoshimura, Koji

AU - Yoshimura, Motohiko

PY - 2019/1/30

Y1 - 2019/1/30

N2 - We observed two-photon emission (TPE) signal from the first vibrationally excited state of parahydrogen gas coherently excited by counter-propagating laser pulses. A single narrow-linewidth laser source has roles in the excitation of the parahydrogen molecules and the induction of the TPE process. We measured dependences of the signal energy on the detuning, target gas pressure, and input pulse energies. These results are qualitatively consistent with those obtained by numerical simulations based on Maxwell-Bloch equations with one spatial dimension and one temporal dimension. This study of the TPE process in the counter-propagating injection scheme is an important step toward neutrino mass spectroscopy.

AB - We observed two-photon emission (TPE) signal from the first vibrationally excited state of parahydrogen gas coherently excited by counter-propagating laser pulses. A single narrow-linewidth laser source has roles in the excitation of the parahydrogen molecules and the induction of the TPE process. We measured dependences of the signal energy on the detuning, target gas pressure, and input pulse energies. These results are qualitatively consistent with those obtained by numerical simulations based on Maxwell-Bloch equations with one spatial dimension and one temporal dimension. This study of the TPE process in the counter-propagating injection scheme is an important step toward neutrino mass spectroscopy.

KW - Coherence

KW - Counter-propagating laser injection

KW - Maxwell-Bolch equations

KW - Parahydrogen

KW - Two-photon emission

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U2 - 10.1088/1361-6455/aafbd0

DO - 10.1088/1361-6455/aafbd0

M3 - Article

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VL - 52

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

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