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arXiv · 1610.03823

All-optical hyperpolarization of electron and nuclear spins in diamond

Ben L. Green·Ben G. Breeze·Gregory J. Rees·John V. Hanna·Jyh-Pin Chou·Viktor Ivády·Adam Gali·Mark E. Newton
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Abstract

Low thermal polarization of nuclear spins is a primary sensitivity limitation for nuclear magnetic resonance. Here we demonstrate optically pumped (microwave-free) nuclear spin polarization of $^{13}\mathrm{C}$ and $^{15}\mathrm{N}$ in $^{15}\mathrm{N}$-doped diamond. $^{15}\mathrm{N}$ polarization enhancements up to $-2000$ above thermal equilibrium are observed in the paramagnetic system $\mathrm{N_s}^{0}$. Nuclear spin polarization is shown to diffuse to bulk $^{13}\mathrm{C}$ with NMR enhancements of $-200$ at room temperature and $-500$ at $\mathrm{240~K}$, enabling a route to microwave-free high-sensitivity NMR study of biological samples in ambient conditions.

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Ben L. Green, Ben G. Breeze, Gregory J. Rees, John V. Hanna, Jyh-Pin Chou, Viktor Ivády, Adam Gali, Mark E. Newton. 2017-02-13. All-optical hyperpolarization of electron and nuclear spins in diamond. https://doi.org/10.1103/physrevb.96.054101

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