Finding the nitrogen-vacancy singlet manifold energy level using charge-conversion pulse sequences

The vast research conducted on nitrogen-vacancy (NV) centers in diamond recent years opened the door for a wide range of NV based applications. However, some properties center dynamics and energy levels remain unknown. In this work, we propose charge-conversion pulsed sequence scheme locating singlet manifold level, by multicolor excitation using tunable laser. We present two approaches readout, photoinduced current ${\mathrm{NV}}^{0}$ population, discuss their efficiency different regimes relevant spectrum.