Optical hyperpolarization of nitrogen donor spins in bulk diamond

Abstract

We report hyperpolarization of the electronic spins associated with substitutional nitrogen defects in bulk diamond crystal. Hyperpolarization is achieved by optical pumping of nitrogen vacancy centers followed by rapid cross relaxation at the energy level matching condition in a 51 mT bias field. The maximum observed donor spin polarization is 0.9 \% corresponding to an enhancement by 25 compared to the thermal Boltzmann polarization. A further accumulation of polarization is impeded by an anomalous optical saturation effect that we attribute to charge state conversion processes. Hyperpolarized nitrogen donors may form a useful resource for increasing the efficiency of diamond-based dynamic nuclear polarization devices.

arXiv comment15 pages, 4 figures

References in corpus (12)

• The nitrogen-vacancy colour centre in diamond
• High nitrogen-vacancy density diamonds for magnetometry applications
• Photo induced ionization dynamics of the nitrogen vacancy defect in diamond investigated by single shot charge state detection
• Temperature and magnetic field dependent longitudinal spin relaxation in nitrogen-vacancy ensembles in diamond
• Photoelectrical detection of electron spin resonance of nitrogen-vacancy centres in diamond
• Nanoscale nuclear magnetic resonance with a 1.9-nm-deep nitrogen-vacancy sensor
• Bulk Nuclear Polarization Enhanced at Room-Temperature by Optical Pumping
• Optically induced dynamic nuclear spin polarisation in diamond
• Optical patterning of trapped charge in nitrogen-doped diamond
• Generation and transport of photoexcited electrons in single-crystal diamond
• Nanodiamond-enhanced MRI
• Optical quenching and recovery of photoconductivity in single-crystal diamond

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• Large Room Temperature Bulk DNP of ${}^{13}$C via P1 Centers in Diamond
• Optical detection of paramagnetic defects in diamond using off-resonance excitation of NV centers
• Investigation of room temperature multispin-assisted bulk diamond 13C hyperpolarization at low magnetic fields
• Exploring the nonlinear regime of light-matter interaction using electronic spins in diamond
• Multiphoton resonances in nitrogen-vacancy defects in diamond