中国物理B ›› 2004, Vol. 13 ›› Issue (8): 1287-1290.doi: 10.1088/1009-1963/13/8/018
林健1, 黄文旵1, 张诗按2, 孙真荣2, 王宇飞2, 曾和平2, 王祖赓2, 徐至展3, 李儒新3
Zhang Shi-An (张诗按)a, Sun Zhen-Rong (孙真荣)a, Wang Yu-Fei (王宇飞)a, Zeng He-Ping (曾和平)a, Wang Zu-Geng (王祖赓)b, Lin Jian (林健)b, Huang Wen-Hai (黄文旵)b, Xu Zhi-Zhan (徐至展)c, Li Ru-Xin (李儒新)c
摘要: Nonlinear optical properties of 75TeO_2-20Nb_2O_5-5ZnO glasses doped with CeO_2 have been investigated with a self-diffracted time-resolved degenerate four-wave mixing (DFWM) technique at different excitation intensities and lattice temperatures. The DFWM signal exhibits three peaks at higher excitation intensities, where a main peak appears at zero delay time and two rather weak side peaks are located symmetrically at the negative and positive time delay. Due to destructive interferences between the fifth- and third-order polarizations, the line-shape of the main peak around the zero time delay evolves from single peak into a double-peak structure with increasing excitation intensity. Two side peaks emerge at the positive and negative time delay and gradually intensify with increasing excitation intensity or lattice temperature, and their positions are independent of the pulse duration, temperature and excitation intensity, which are attributed to the many-body Coulomb interaction.
中图分类号: (Glasses, quartz)