PUMP WAVELENGTHS FOR AN UPCONVERSION-PUMPED Er:YAG GREEN-EMITTING LASER

摘要

Mathematical modeling is used to study laser emission in an Er(0.5 at.%):YAG active medium on the transition ~4S_(3/2) → ~4I_(15/2) for upconversion pumping. The emission regimes corresponding to two pump wavelengths (800 nm and 810 nm) are investigated. We find the optimum pump wavelength and optimum conditions for lowering of the continuous-wave emission threshold.