Mid-infrared lightly Er³⁺-doped CaF₂ laser under acousto–optical modulation

【摘要】 A 1.7-at.% Er:CaF₂crystal was synthesized by temperature gradient method. The Er:CaF₂crystal was applied in acousto-optically Q-switched laser at mid-infrared region for the first time. Using a Te O₂-based crystal as Q-switcher, we obtained a laser diode（LD） end-pumped Er:CaF₂laser with the highest single pulse energy up to 0.49 mJ and maximum peak power of 0.56 kW under 6.34-W absorbed pump power. The implication of these results is that the low-doped Er:CaF₂crystal exhibits promising optical properties in solid-state lasers.更多还原

【Abstract】 A 1.7-at.% Er:CaF₂crystal was synthesized by temperature gradient method. The Er:CaF₂crystal was applied in acousto-optically Q-switched laser at mid-infrared region for the first time. Using a Te O₂-based crystal as Q-switcher, we obtained a laser diode（LD） end-pumped Er:CaF₂laser with the highest single pulse energy up to 0.49 mJ and maximum peak power of 0.56 kW under 6.34-W absorbed pump power. The implication of these results is that the low-doped Er:CaF₂crystal exhibits promising optical properties in solid-state lasers.更多还原