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Proceedings Paper

Investigation for the high recording sensitivity with two-center recording in LiNbO3:Fe:Ru crystals
Author(s): Zhifang Chai; De'an Liu; Rong Zhu; Ya'nan Zhi; Liren Liu
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Paper Abstract

LiNbO3:Fe:Ru crystal is the effective recording media with high recording sensitivity for two-center recording, and the physical mechanism for the high recording sensitivity is investigated theoretically and experimentally. The results show that the energy level of Ru perhaps is closer to that of Fe than that of Mn in LiNbO3 crystal, the electrons in Ru center can be excited more effectively into the conduction band in the same sensitizing conditions, which can induce the improvement of the recording sensitivity. The recording sensitivity 0.044cm/J in LiNbO3:Fe:Ru crystal, which is ten times larger than that obtained in LiNbO3:Fe:Mn reported early. However, the elevation of energy level of deep center will induce that the electron excitation from deep center by the recording light become more effective, and the persistence decreases with the recording sensitivity increase, the grating in Ru center can be erased by red light obviously. In practical application people must take a trade off between the recording sensitivity and persistence.

Paper Details

Date Published: 24 August 2006
PDF: 8 pages
Proc. SPIE 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII, 631416 (24 August 2006); doi: 10.1117/12.678300
Show Author Affiliations
Zhifang Chai, Shanghai Institute of Optics and Fine Mechanics (China)
De'an Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Rong Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Ya'nan Zhi, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 6314:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII
Francis T. S. Yu; Ruyan Guo; Shizhuo S. Yin, Editor(s)

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