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Low-field microwave-mediated optical hyperpolarization in optically pumped diamond

MetadataDetails
Publication Date2021-09-22
JournalJournal of Magnetic Resonance
AuthorsAshok Ajoy, Adrisha Sarkar, Emanuel Druga, Pablo R. Zangara, Daniela Pagliero
InstitutionsCity College of New York, Lawrence Berkeley National Laboratory
Citations5

The emergence of a new class of optically polarizable electronic spins in diamond, nitrogen vacancy (NV) defect centers, has opened interesting new avenues for dynamic nuclear polarization. Here we review methods for the room-temperature hyperpolarization of lattice <sup>13</sup>C nuclei using optically pumped NV centers, focusing particular attention to a polarization transfer via rotating-frame level anti-crossings. We describe special features of this optical DNP mechanism at low-field, in particular, its deployability to randomly oriented diamond nanoparticles. In addition, we detail methods for indirectly obtaining high-resolution NV ESR spectra via hyperpolarization readout. These mechanistic features provide perspectives for interesting new applications exploiting the optically generated <sup>13</sup>C hyperpolarization.

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