中国物理B ›› 2008, Vol. 17 ›› Issue (10): 3635-3639.doi: 10.1088/1674-1056/17/10/017
姚宝权1, 郑亮亮1, 段小明1, 赵广军2, 宗艳花2
Yao Bao-Quan(姚宝权)a)† , Zheng Liang-Liang(郑亮亮)a), Duan Xiao-Ming(段小明)a), Zhao Guang-Jun(赵广军)b), and Zong Yan-Hua(宗艳花)b)
摘要: This paper reports that the Tm$^{3 + }$:Lu$_{2}$SiO$_{5}$ (Tm:LSO) crystal is grown by Czochralski technique. The room-temperature absorption spectra of Tm:LSO crystal are measured on a b-cut sample with 4 at.{\%} thulium. According to the obtained Judd--Ofelt intensity parameters $\Om _{2}$=9.3155$\times $10$^{ - 20 }$\,cm$^{2}$, $\Om_{4}$=8.4103$\times $10$^{ - 20 }$\,cm$^{2}$, $\Om_{6}$=1.5908$\times $10$^{ - 20 }$\,cm$^{2}$, the fluorescence lifetime is calculated to be 2.03\,ms for $^{3}$F$_{4} \to {}^{3}$H$_{6}$ transition, and the integrated emission cross section is 5.81$\times $10$^{ - 18 }$\,cm$^{2}$. Room-temperature laser action near 2\,$\mu $m under diode pumping is experimentally evaluated in Tm:LSO. An optical-optical conversion efficiency of 9.1{\%} and a slope efficiency of 16.2{\%} are obtained with continuous-wave maximum output power of 0.67\,W. The emission wavelengths of Tm:LSO laser are centred around 2.06\,$\mu $m with spectral bandwidth of $\sim $13.6\,nm.
中图分类号: (Growth from melts; zone melting and refining)