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Shingo Maeda

doi:10.1117/1.3484945

Comparative study of laser-induced metastability-exchange optical pumping of <inline-formula><math display="inline" overflow="scroll"><mmultiscripts><mi mathvariant="normal">He</mi><mprescripts /><none /><mn>3</mn></mmultiscripts></math></inline-formula> atoms through <inline-formula><math display="inline" overflow="scroll"><mrow><msup><mn>2</mn><mn>3</mn></msup><msub><mi mathvariant="normal">S</mi><mn>1</mn></msub><mtext>-</mtext><msup><mn>3</mn><mn>3</mn></msup><msub><mi mathvariant="normal">P</mi><mi mathvariant="normal">J</mi></msub></mrow></math></inline-formula> transition at <inline-formula><math display="inline" overflow="scroll"><mrow><mn>389</mn><mspace width="0.3em" /><mi>nm</mi></mrow></math></inline-formula> with <inline-formula><math display="inline" overflow="scroll"><mrow><msup><mn>2</mn><mn>3</mn></msup><msub><mi mathvariant="normal">S</mi><mn>1</mn></msub><mtext>-</mtext><msup><mn>2</mn><mn>3</mn></msup><msub><mi mathvariant="normal">P</mi><mi mathvariant="normal">J</mi></msub></mrow></math></inline-formula> transition at <inline-formula><math display="inline" overflow="scroll"><mrow><mn>1083</mn><mspace width="0.3em" /><mi>nm</mi></mrow></math></inline-formula>

Shingo Maeda

https://doi.org/10.1117/1.3484945

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Journal: Optical engineering (Redondo Beach, Calif.)	Publication Date: Sep 1, 2010
Citations: 1

Affiliation: Osaka City University

#Hollow Cathode Discharge Cell #Nuclear Polarization + Show 8 more

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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.

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