Temperature-dependent second-harmonic generation from color centers in diamond

• DOI: 10.1364/ol.455437
• Publication Date: 2022-03-01T13:30:08Z
• Authors: Aizitiaili Abulikemu; Yuta Kainuma; Toshu An; Muneaki Hase
• Keywords: Intensity; Atmospheric temperature range

Under infrared ultrashort pulse laser stimulation, we investigate temperature-dependent second-harmonic generation (SHG) from nitrogen-vacancy (NV)-introduced bulk diamond. The SHG intensity decreases in the temperature range of 20-300°C, due to phase mismatching caused by refractive index modification. We discover that optical phonon scattering outperforms acoustic NV diamond fitting dependence using a model based on bandgap change via deformation potential interaction. This study presents an efficient and viable way for creating diamond-based nonlinear sensing.