Alasdair Tew

Self-Sensitized Shortwave Infrared Upconversion and Photon-Looping in Holmium-Doped Nanoparticles

Abstract Photon upconversion in lanthanide-doped nanoparticles provides an ultra-large anti-Stokes shift crucial for biomedical and photonic applications, but conventional architectures are typically limited to excitation wavelengths below 1700 nm. Here, we report efficient, dire...