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Optical Engineering

Comparative study of laser-induced metastability-exchange optical pumping of 3He atoms through 23S1-33PJ transition at 389 nm with 23S1-23PJ transition at 1083 nm
Author(s): Shingo Maeda; Yutaka Tabata; Hiroki Yamada; Hiroshi Kumagai
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Paper Abstract

We developed a metastability-exchange optical pumping technique for metastable triplet helium (3He) atoms utilizing the 23S1-33PJ transition at 389 nm with radiation generated by a frequency-doubled cw Ti:Sapphire laser and compared the results with our results obtained utilizing the 23S1-23PJ transition at 1083 nm with a diode laser. We optically measured the nuclear polarization of 3He in the hollow cathode discharge cell by monitoring the absorption of a weak longitudinal probe laser at 1083 nm. This provided, for the first time, nuclear polarization utilizing the 23S1-33PJ transition at 389 nm.

Paper Details

Date Published: 1 September 2010
PDF: 5 pages
Opt. Eng. 49(9) 091014 doi: 10.1117/1.3484945
Published in: Optical Engineering Volume 49, Issue 9
Show Author Affiliations
Shingo Maeda, Osaka City Univ. (Japan)
Yutaka Tabata, Osaka City Univ. (Japan)
Hiroki Yamada, Osaka City Univ. (Japan)
Hiroshi Kumagai, Osaka City Univ. (Japan)

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