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arXiv · 1803.02215

Infrared and visible scintillation of Ho$^{3+}$-doped YAG and YLF crystals

F. Chiossi·A. F. Borghesani·G. Carugno
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Abstract

In our effort to develop a new kind of detector for low-energy, low-rate energy deposition events we have investigated the cathodo- and radioluminescence of Ho:YAG and Ho:YLF single crystals in an extended wavelength range from $200\,$nm to $2200\,$nm. The emission spectra of both crystals show a much more intense emission in the infrared range than in the visible one. We estimate an infrared light yield of $40\,$photons/keV when exciting the crystals with X-rays of energy $\approx 30\,$keV. The main reason of this high value is due to the Ho$^{3+}$ ions energy levels scheme that allows efficient cross relaxation processes to occur even at low dopant concentration.

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F. Chiossi, A. F. Borghesani, G. Carugno. 2018-03-06. Infrared and visible scintillation of Ho$^{3+}$-doped YAG and YLF crystals. https://doi.org/10.1016/j.jlumin.2018.06.035

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