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首页> 外文期刊>Crystal growth & design >LiNaB4O7 crystals as a material for optically induced elastoopticity
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LiNaB4O7 crystals as a material for optically induced elastoopticity

机译:LiNaB4O7晶体作为光学诱导弹塑性的材料

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During bicolor optical treatment by Nd: YAG laser radiation (lambda = 1060 nm) and its coherent second harmonic (lambda = 530 nm) of the LiNaB4O7 (LNTB) crystals ( space group Fdd2), a substantial increase in the elastooptic coefficient at lambda = 633 nm (up to 9 x 10(-13) m(2)/N) was revealed. The corresponding effect was maximal for the diagonal piezooptic POxxxx tensor component, where x is directed along the second-order crystallographic axes. The effect appears at temperatures below 80 K and achieves its maximal value at T = 4.2 K. The phenomenon appears after 2 min of optical treatment under laser power densities above 0.6 GW/cm(2) and is saturated after 5 min of the bicolor optical coherent treatment. The elastooptical effect decreases at least one order at temperatures below 50 K and 6 min after switching off the bicolor laser treatment.
机译:在Nd:YAG激光辐射(λ= 1060 nm)及其相关的LiNaB4O7(LNTB)晶体(空间群Fdd2)的二次谐波(λ= 530 nm)进行双色光学处理期间,λ=时的弹性系数大大增加揭示了633 nm(最高达9 x 10(-13)m(2)/ N)。对于对角压电POxxxx张量分量,相应的影响最大,其中x沿二阶晶体学轴指向。该效应出现在低于80 K的温度下,并在T = 4.2 K时达到最大值。该现象在激光功率密度超过0.6 GW / cm(2)的光学处理2分钟后出现,并在5分钟的双色光学区域达到饱和。相干治疗。在关闭双色激光处理后,在低于50 K的温度和6分钟的温度下,弹性效应至少降低一个阶。

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