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光子上转换——光与物质相互作用将低能激光转换为高能光发射——是非线性光学中最令人着迷的效应。在已研究过的几种上转换方法中,镧基光子上转换是最有效的。1961年,John Porter在用非同时光子激发Pr3+离子时,观察到镨掺杂的氯化镧(La Cl3:Pr)晶体的发光现象。此后几年中,一些研究人员利用掺杂离子之间的能量转移进行了镧系敏化的上转换。然而,直到21世纪初,研究集
Photon Upconversion - The Interaction of Light with Matter Converting a Low Energy Laser to a High Energy Light Emission - is the most fascinating effect of nonlinear optics. Among the several up-conversion methods that have been studied, lanthanide-based photon upconversion is most effective. In 1961, John Porter observed the luminescence of praseodymium-doped lanthanum chloride (LaCl3: Pr) crystals when excited with non-simultaneous photons. In the next few years, some researchers used lanthanide sensitized upconversion using energy transfer between doped ions. However, until the early 21st century, the research set