For the first time, lasing at NV− centers in an optically pumped diamond sample is achieved. A nanosecond train of 150-ps 532-nm laser pulses was used to pump the sample. The lasing pulses have central wavelength at 720 nm with a spectrum width of 20 nm, 1-ns duration and total energy around 10 nJ. In a pump-probe scheme, we investigate lasing conditions and gain saturation due to NV− ionization and NV0 concentration growth under high-power laser pulse pumping of diamond crystal.
@article{arxiv.2103.03784,
title = {NV$^{-}$ Diamond Laser},
author = {Alexander Savvin and Alexander Dormidonov and Evgeniya Smetanina and Vladimir Mitrokhin and Evgeniy Lipatov and Dmitriy Genin and Sergey Potanin and Alexander Yelisseyev and Viktor Vins},
journal= {arXiv preprint arXiv:2103.03784},
year = {2022}
}