Phys. Rev. Lett. 99, 024801 (2007) [4 pages]Investigation of Ultrafast Nuclear Spin Polarization Induced by Short Laser PulsesReceived 6 November 2006; published 12 July 2007 We theoretically investigate the dynamics of nuclear spin induced by short laser pulses and show that ultrafast nuclear spin polarization can take place. Combined use of the hyperfine interaction together with the static electric field is the key for that. Specifically we apply the idea to unstable isotopes, 27Mg and 37Ca, with nuclear spin of 1/2 and 3/2, respectively, and show that 88% and 62% of nuclear spin polarization can be achieved within a few to tens of ns, which is 2–3 orders of magnitude shorter than the time needed for any known optical methods. Because of its ultrafast nature, our scheme would be very effective not only for stable nuclei but also unstable nuclei with a lifetime as short as μs. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.024801
DOI:
10.1103/PhysRevLett.99.024801
PACS:
29.27.Hj, 29.25.−t, 42.50.Md
See AlsoComment: M. E. Hayden and E. W. Otten, Comment on “Investigation of Ultrafast Nuclear Spin Polarization Induced by Short Laser Pulses”, Phys. Rev. Lett. 101, 189501 (2008). Reply: Takashi Nakajima, Nakajima Replies:, Phys. Rev. Lett. 101, 189502 (2008). |
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