Nano Holmium Oxide, with its unique 4f electron configuration, has made remarkable breakthroughs in the laser domain. Its nanoscale particle size (typically 20-80 nm) significantly enhances the absorption cross-section of pump light, enabling laser systems to achieve higher energy conversion efficiency—up to 65% in some solid-state laser setups, which is 15-20% higher than that of conventional micrometer-sized holmium oxide.
In terms of laser wavelength regulation, nano-sized holmium oxide-doped laser crystals (such as YAG:Ho³⁺) can stably output lasers at the 2.0 μm band, a wavelength that coincides with the absorption peak of water molecules. This characteristic makes them ideal for medical laser applications, particularly in precise soft tissue cutting and hemostasis during surgeries, as it minimizes thermal damage to surrounding tissues (the thermal affected zone is reduced to less than 50 μm).
Moreover, the high dispersion of nano-sized holmium oxide in host materials (like fluoride glass) effectively suppresses concentration quenching effects. This allows for higher doping concentrations (up to 2.5 at.%) while maintaining laser output stability, extending the service life of laser gain media by over 3000 hours under continuous operation.
In the field of high-power lasers, nano-sized holmium oxide-based fiber lasers have achieved continuous output power exceeding 500 W, with excellent beam quality (M² < 1.2), meeting the demanding requirements of industrial material processing, such as precision drilling and welding of thick metal plates.
