Crystal growth and spectroscopic properties of erbium doped Lu_2SiO_5

摘要

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~(2+) ~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.