Production of ba metastable state via superradiance

Chiaki Ohae, Atsushi Fukumi, Susumu Kuma, Yuki Miyamoto, Kyo Nakajima, Itsuo Nakano, Hajime Nanjo, Noboru Sasao, Satoshi Uetake, Tomonari Wakabayashi, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We describe in this paper a fast and efficient method of producing a high density of barium (Ba) atoms in the1D2metastable state, which is a candidate initial state for a new class of cooperative and coherent optical process called paired superradiance (PSR). In the experiment, Ba atoms are excited first by laser light to the1P1state and then brought to the desired state1D2via radiative transition in the superradiance (SR) mode. It is found that a production efficiency (from1S0to1D2) of more than ∼30% is achieved within a time interval of a few nanoseconds for a Ba density n > 1019m-3. Several key features of SR important for future PSR experiments are also studied.

Original languageEnglish
Article number044301
Journaljournal of the physical society of japan
Volume83
Issue number4
DOIs
Publication statusPublished - Apr 15 2014

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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