微爆材料的飞秒激光三维光存储

Three dimensional optical storage of femtosecond laser based on micro explosion material

飞秒激光三维光存储是实现高密度和超高密度光存储的重要方法之一。对一种新的微爆材料(以PMMA为基质掺杂Sm_(0.5)Ce_(0.5)(DBM)_3Phen染料)的吸收光谱进行了测量和分析,以波长为514.5 nm的激光作为激光光源获得了激发前后的荧光光谱,以800 nm飞秒激光作为激发光源得到激发前后的电子旋转共振光谱特性,并分析了不同激光脉冲能量下存储数据点尺寸和存储点读出灰度值的变化情况,并实现了该材料的飞秒激光四层光信息存储,点间距为4μm,层间距为16μm,实验结果表明:这种材料可以很好地应用于三维光信息存储。

Three dimensional optical storage based on femtosecond laser is one of the most important methods to realize high density and super-high density optical storage.The absorption spectrum of a new micro explosion material(Sm0.5Ce0.5(DBM)3 Phen dye doped with PMMA as substrate)was measured and analyzed,the fluorescence spectra before and after excitation were obtained by using 514.5 nm laser as laser source,the characteristics of electron rotation resonance spectra before and after excitation were obtained by using 800 nm femtosecond laser as excitation source,the change of storage point size and storage point readout gray value under different femtosecond laser pulse energy was analyzed,the four layer optical information storage of femtosecond laser was realized,the distance between the points is 4μm and the distance between layers is 16μm.The experimental results show that this material can be well applied to 3D optical information storage.