Investigation for the high recording sensitivity with two-center recording in LiNbO3:Fe:Ru crystals

Zhifang Chai; De'an Liu; Rong Zhu; Ya'nan Zhi; Liren Liu

doi:10.1117/12.678300

24 August 2006 Investigation for the high recording sensitivity with two-center recording in LiNbO₃:Fe:Ru crystals

Zhifang Chai, De'an Liu, Rong Zhu, Ya'nan Zhi, Liren Liu

Proceedings Volume 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII; 631416 (2006) https://doi.org/10.1117/12.678300
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

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.

Citation Download Citation

Zhifang Chai, De'an Liu, Rong Zhu, Ya'nan Zhi, and Liren Liu "Investigation for the high recording sensitivity with two-center recording in LiNbO₃:Fe:Ru crystals", Proc. SPIE 6314, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XII, 631416 (24 August 2006); https://doi.org/10.1117/12.678300

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