中国物理B ›› 2017, Vol. 26 ›› Issue (4): 44201-044201.doi: 10.1088/1674-1056/26/4/044201
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
Xiu-Rong Ma(马秀荣), Lin Xu(徐林), Shi-Yuan Chang(常世元), Shuang-Gen Zhang(张双根)
Xiu-Rong Ma(马秀荣)1, Lin Xu(徐林)2, Shi-Yuan Chang(常世元)3, Shuang-Gen Zhang(张双根)4
摘要: This paper investigates the phenomenon of three-pulse photon echo in thick rare-earth ions doped crystal whose thickness is far larger than 0.002 cm which is adopted in previous works. The influence of thickness on the three-pulse photon echo's amplitude and efficiency is analyzed with the Maxwell-Bloch equations solved by finite-difference time-domain method. We demonstrate that the amplitude of three-pulse echo will increase with the increasing of thickness and the optimum thickness to generate three-pulse photon echo is 0.3 cm for Tm3+:YAG when the attenuation of the input pulse is taken into account. Meanwhile, we find the expression 0.09exp(α'L), which is previously employed to describe the relationship between echo's efficiency and thickness, should be modified as 1.3·0.09exp(2.4·α'L ight) with the propagation of echo considered.
中图分类号: (Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency)