Wavelength Dependence of the Electrical and Optical Readout of NV Centers in Diamond

2023/07/21 by Lina M. Todenhagen, Todenhagen, Lina M., Martin S. Brandt +1
Earth and Planetary Sciences · Materials Science · #Applied Physics (physics.app-ph) #Diamond and Carbon-based Materials Research #Electronic and Structural Properties of Oxides #FOS: Physical sciences #High-pressure geophysics and materials #Mesoscale and Nanoscale Physics (cond-mat.mes-hall)

paper · pdf · doi:10.48550/arxiv.2307.11830

openalex publication_date 2023/07/21 · openalex created_date 2023/07/26 · openalex updated_date 2026/07/28

Abstract

We study the contrast for electrical and optical readout of NV centers in diamond in dependence of the optical excitation wavelength using different excitation schemes. While the optically detected magnetic resonance (ODMR) works efficiently between 480 and 580 nm, electrically detected magnetic resonance (EDMR) shows a strong dependence on the excitation dynamics. The highest, electrically detected contrast of -23% is achieved by resonantly exciting the zero-phonon line of the neutral charge state of NV at 575 nm. EDMR is also enhanced at 521 nm, possibly due to a further excited state of NV^-.

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