Crystal growth and spectroscopic properties of erbium doped Lu 2SiO 5

Abstract

A high optical quality erbium doped Lu 2SiO 5 single crystal has been grown by the Czochralski method. The distribution coefficient of Er 3+ was measured to be ∼0.926. The absorption and emission spectra as well as the fluorescence decay curve of the excited state 4I 13/2 were measured at room temperature. The spectroscopic parameters were calculated using the Judd–Ofelt theory, and the J–O parameters Ω 2 , Ω 4 and Ω 6 were found to be 4.451×10 -20, 1.614×10 -20 and 1.158×10 -20 cm 2, respectively. The room-temperature fluorescence lifetime of the Er 3+ 4I 13/2→ 4I 15/2 transition was measured to be 7.74 ms. The absorption and emission cross-section as well as the gain cross-section in the eye-safe regime of 1400–1700 nm were also determined and discussed.