Observation of coherent two-photon emission from the first vibrationally-excited state of hydrogen molecules
Yuki Miyamoto, Hideaki Hara, Susumu Kuma, Takahiko Masuda, Masayuki, Katsuragawa, Itsuo Nakano, Chiaki Ohae, Noboru Sasao, Minoru Tanaka, Satoshi, Uetake, Akihiro Yoshimi, Koji Yoshimura, and Motohiko Yoshimura
TL;DR
This study experimentally demonstrates macro-coherent two-photon emission from vibrationally-excited hydrogen molecules, confirming theoretical predictions and advancing understanding of coherent emission processes in molecular systems.
Contribution
It presents the first experimental observation of coherent two-photon emission from vibrationally-excited hydrogen molecules using adiabatic Raman transfer.
Findings
Observed coherent two-photon emission consistent with super-radiance theory
Prepared large initial coherence via adiabatic Raman transfer
Validated theoretical models of macro-coherent emission processes
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 para-hydrogen molecule. Large coherence in the initial state was prepared by the adiabatic Raman population transfer method, and the lowest Stokes sideband was used as a trigger field. We observed the coherent two-photon emission consistent with the expectation of the paired super-radiance master equation.
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