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

Shingo Maeda; Yutaka Tabata; Hiroki Yamada; Hiroshi Kumagai

doi:10.1117/1.3484945

1 September 2010 Comparative study of laser-induced metastability-exchange optical pumping of ³He atoms through 2³S₁-3³P_J transition at 389 nm with 2³S₁-2³P_J transition at 1083 nm

Shingo Maeda, Yutaka Tabata, Hiroki Yamada, Hiroshi Kumagai

Author Affiliations +

Optical Engineering, Vol. 49, Issue 9, 091014 (September 2010). https://doi.org/10.1117/1.3484945

Abstract

We developed a metastability-exchange optical pumping technique for metastable triplet helium (³He) atoms utilizing the 2³S₁-3³P_J 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 2³S₁-2³P_J 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 2³S₁-3³P_J transition at 389 nm.

©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Shingo Maeda, Yutaka Tabata, Hiroki Yamada, and Hiroshi Kumagai "Comparative study of laser-induced metastability-exchange optical pumping of ³He atoms through 2³S₁-3³P_J transition at 389 nm with 2³S₁-2³P_J transition at 1083 nm," Optical Engineering 49(9), 091014 (1 September 2010). https://doi.org/10.1117/1.3484945

Published: 1 September 2010

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