1. Effect of wavelength of sensitizing light on holographic storage properties in LiNbO3:Fe:Ni crystal
- Author
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Guo, Yuanjun, Liu, Liren, Liu, De’an, Chai, Zhifang, and Zhu, Rong
- Subjects
- *
ULTRAVIOLET radiation , *ABSORPTION , *BLUE light , *HOLOGRAPHIC interferometry - Abstract
Abstract: By sensitizing with 514nm green light, 488nm blue light and 390nm ultraviolet light, respectively, recording with 633nm red light, effect of wavelength of sensitizing light on holographic storage properties in LiNbO3:Fe:Ni crystal is investigated in detail. It is shown that by shortening the wavelength of sensitizing light gradually, nonvolatile holographic recording properties of oxidized LiNbO3:Fe:Ni crystal is optimized gradually, 390nm ultraviolet light is the best as the sensitizing light. Considering the absorption of sensitizing light, to obtain the best performance in two-center holographic recording we must choose a sensitizing wavelength that is long enough to prevent unwanted absorptions (band-to-band, etc.) and short enough to result in efficient sensitization from the deep traps. So in practice a trade-off is always needed. Explanation is presented theoretically. [Copyright &y& Elsevier]
- Published
- 2006
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