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- Title
Comparative study of laser-induced metastability-exchange optical pumping of 3Heatoms through 23S1-33PJtransition at 389 nmwith 23S1-23PJtransition at 1083 nm.
- Authors
Shingo Maeda; Yutaka Tabata; Hiroki Yamada; Hiroshi Kumagai
- Abstract
We developed a metastability-exchange optical pumping technique for metastable triplet helium (3He)atoms utilizing the 23S1-33PJtransition at 389 nmwith radiation generated by a frequency-doubled cw Ti:Sapphire laser and compared the results with our results obtained utilizing the 23S1-23PJtransition at 1083 nmwith a diode laser. We optically measured the nuclear polarization of 3Hein 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 23S1-33PJtransition at 389 nm.
- Subjects
OPTICAL pumping; EQUILIBRIUM; HELIUM; ATOMS; LASERS; POLARIZATION (Nuclear physics); RADIATION; ABSORPTION
- Publication
Optical Engineering, 2010, Vol 49, Issue 9, p091014
- ISSN
0091-3286
- Publication type
Article
- DOI
10.1117/1.3484945