27 February 2009 Nanosecond 389-nm coherent light source with injection seeding for nuclear spin polarization of 3He atoms
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Abstract
We have developed a 389-nm frequency-doubled nanosecond-pulsed coherent light source with injection seeding for nuclear polarization of 3He atoms with 23S→33P and then suggested four kinds of spectroscopic methods with the injection-seeded light source. With this light source, we have conducted saturated absorption spectroscopy of metastable 3He atoms. As a result, an accurate resonance frequency of 770682 GHz and a dip width of 1.7 GHz of metastable 3He atoms are obtained. Therefore, the linewidth of our injection-seeded light source can be estimated at 65 MHz or 1.7 GHz. Our light source has potential for the polarization of 3He due to high-peak power and narrow linewidth of the injection-seeded light source.
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Yuta Aoki, Yasutomo Shiomi, Takeshi Yamamoto, Hiroshi Kumagai, Ataru Kobayashi, "Nanosecond 389-nm coherent light source with injection seeding for nuclear spin polarization of 3He atoms", Proc. SPIE 7193, Solid State Lasers XVIII: Technology and Devices, 71930X (27 February 2009); doi: 10.1117/12.808168; https://doi.org/10.1117/12.808168
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