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Effect of dopant composition ratio on nonvolatile holographic recording in LiNbO3:Cu:Ce crystals

Qianmin Dong1, Liren Liu, De'an Liu

  • 1Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 210800, China. qm_dong@sohu.com

Applied Optics
|October 8, 2004
PubMed

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When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.