Microjoule‐Range Diamond NV‐Laser with Optical Pumping

Laser generation of NV‐centers in diamond with pulse energy up to 48 μJ and efficiency about 1% is performed. Also, we observe strong influence of low‐intensity short‐wavelength irradiation on pulse energy: in presence of this irradiation the pulse energy increased by factor up to 3.5. Additionally, we make an attempt to estimate theoretically our samples’ gain coefficient. GA. Laser generation with pulse energy up to 48 μJ and efficiency about 1% is performed using diamond, containing NV‐centers, as laser active element. Diamond crystal was pumped by 532 by 532 nm radiation. Also, strong influence of low‐intensity short‐wavelength irradiation on pulse energy is observed: in presence of this irradiation the pulse energy increased by factor up to 3.5. Laser generation with pulse energy up to 48 μJ and efficiency about 1% is performed using diamond, containing NV‐centers, as laser active element. Diamond crystal is pumped by 532 nm radiation. Also, strong influence of low‐intensity short‐wavelength irradiation on pulse energy is observed: in presence of this irradiation the pulse energy increased by factor up to 3.5.