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Photorefractive recording in LiNbO_(3):Mn

机译:LiNbO_(3):Mn中的光折变记录

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摘要

The dynamic range, sensitivity, and dark decay of holographic recording of wavelength 458 nm in LiNbO_(3) crystals doped with 0.2-at.% Mn with different oxidation states have been measured. The measured sensitivity is 0.5 cm/J and is found to be independent of the oxidation state, and the largest M/# obtained is 12/mm (extraordinary light polarization; light wavelength, 458 nm). This combination of very large M/# and high sensitivity is in strong contrast with results for LiNbO_(3):Fe for which a direct trade-off exists between M/# and sensitivity. The activation energy of the dark decay of holograms stored in these LiNbO_(3):Mn crystals is ~1.0 eV, which is characteristic of proton compensation and leads to a projected lifetime of holograms of three years at room temperature.
机译:在掺杂了0.2at。%Mn和不同氧化态的LiNbO_(3)晶体中,测量了波长458 nm全息记录的动态范围,灵敏度和暗衰减。测得的灵敏度为0.5 cm / J,并且与氧化态无关,并且获得的最大M /#为12 / mm(非常规光偏振;光波长458 nm)。 M /#非常大且灵敏度高的这种组合与LiNbO_(3):Fe的结果形成强烈对比,LiNbO_(3):Fe的结果在M /#和灵敏度之间存在直接权衡。这些LiNbO_(3):Mn晶体中存储的全息图的暗衰变的活化能为〜1.0 eV,这是质子补偿的特征,导致全息图在室温下的预期寿命为三年。

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