LiNbO₃:Fe晶体中热固定全息图的寿命

Lifetimes of thermally fixed holograms in LiNbO(3):Fe crystals.

作者信息

Arizmendi L, de Miguel-Sanz E M, Carrascosa M

出版信息

Opt Lett. 1998 Jun 15;23(12):960-2. doi: 10.1364/ol.23.000960.

DOI:10.1364/ol.23.000960

Abstract

The thermal erasure decay at different temperatures of holographic gratings thermally fixed in iron-doped lithium niobate has been exhaustively studied. An activation energy of 0.94 eV was found to be independent of the grating fringe spacing. At a given temperature the decay time is strongly dependent on the grating spacing. This dependence is well fitted to a square fringe spacing law, as predicted theoretically. From the experimental data the room-temperature hologram lifetime under illumination is extrapolated, giving as a result t(years)=(5.2+/-0.2)?(2) , with the grating spacing ? in micrometers.

摘要

对热固定在掺铁铌酸锂中的全息光栅在不同温度下的热擦除衰减进行了详尽研究。发现0.94电子伏特的激活能与光栅条纹间距无关。在给定温度下，衰减时间强烈依赖于光栅间距。如理论预测的那样，这种依赖性很好地符合平方条纹间距定律。根据实验数据外推了光照下室温全息图的寿命，结果为t(年)=(5.2±0.2)×(2)，其中光栅间距以微米为单位。