中国物理B ›› 2006, Vol. 15 ›› Issue (12): 2977-2983.doi: 10.1088/1009-1963/15/12/035
• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇 下一篇
周 煜, 刘立人, 刘德安, 栾 竹, 闫爱民
Zhou Yu(周煜),† Liu Li-Ren(刘立人), Liu De-An(刘德安), Luan Zhu(栾竹), and Yan Ai-Min(闫爱民)
摘要: In this paper the photorefractive sensitivity defined for single-centre holographic recording is modified to adapt two-centre holographic recording. Based on the time analytic solution of Kukhtarev equations for doubly doped crystals, the analytical expression of photorefractive sensitivity is given. For comparison with single-centre holographic recording and summing the electron competition effects between the deeper and shallower traps, an effective electron transport length is proposed, which varies with the intensity ratios of recording light to sensitive light. According to analyses in this paper, the lower photorefractive sensitivity in two-centre holographic recording is mainly due to the lower concentration of unionized dopants in the shallower centre and the lower effective electron transport length.
中图分类号: (Hologram recording and readout methods)