High-power operation of continuous wave Cr4+: forsterite laser: exciting state absorption versus crystal temperature
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abstract
We study temperature and pump power dependence of fluorescence in Cr4+:forsterite crystal. We find that the luminescence yield has a strong temperature and pump power dependence. We also observe two-photon fluorescence induced by continuous wave pumping of Cr4+:forsterite and study its temperature behavior as well. The obtained results are used as a guidance to construct high-power, high energy femtosecond Cr4+:forsterite oscillator.