Quasi-nonvolatile holographic storage in doubly-doped LiNbO3 crystals

Zhifang Chai; De'an Liu; Liren Liu; Ya'nan Zhi; Dashan Li

doi:10.1117/12.731945

17 September 2007 Quasi-nonvolatile holographic storage in doubly-doped LiNbO₃ crystals

Zhifang Chai, De'an Liu, Liren Liu, Ya'nan Zhi, Dashan Li

Proceedings Volume 6698, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications; 669815 (2007) https://doi.org/10.1117/12.731945
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

The recording and readout characteristics in doubly-doped LiNbO₃ crystal with one-color scheme are investigated based on jointly solving material equations and coupled-wave equations. Asymmetry between grating buildup and readout process is found when electrons in deep centers can be excited by recording light; the grating is quasi-nonvolatile. The shorter recording wavelength, and dopant in deep centers with a closer energy level to Fe in LiNbO₃ crystal, can strengthen such asymmetry. The further investigation shows that two aspects induce the quasi-nonvolatile behavior in doubly-doped LiNbO₃ crystal, one is the beam coupling between incident and diffracted beams, the other is two grating form in both centers. This research provides a possible method to prolong the lifetime of grating in doubly-doped LiNbO₃ crystals.

Citation Download Citation

Zhifang Chai, De'an Liu, Liren Liu, Ya'nan Zhi, and Dashan Li "Quasi-nonvolatile holographic storage in doubly-doped LiNbO₃ crystals", Proc. SPIE 6698, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications, 669815 (17 September 2007); https://doi.org/10.1117/12.731945

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