Second order optical effects in Au nanoparticle-deposited ZnO nanocrystallite films
Second order optical effects in Au nanoparticle-deposited ZnO nanocrystallite films
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DOI：
10.1088/0957-4484/19/18/185709
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发表时间：
2008-05-07
期刊：
影响因子：
3.5
通讯作者：
Kityk, I. V.
中科院分区：
文献类型：
--
作者：
Ozga, K.;Kawaharamura, T.;Kityk, I. V.
通过对波长为1.06μm的Nd - YAG激光及其二次谐波进行双色相干处理，研究了金纳米粒子沉积的氧化锌纳米微晶（NC）薄膜中的光诱导二次谐波产生（SHG）。我们已经确定，相对于沉积在玻璃基底上的纯氧化锌纳米晶，氧化锌和金纳米粒子的共存使二次谐波产生的输出大幅增加。经测定，二阶磁化率的值约为23 pm·V⁻¹。对于金掺杂样品，在接近30 - 35℃的温度下进行光处理时获得了更好的非线性光学磁化率。不含金纳米晶的样品与温度无关。一般来说，温度升高会导致光学二次谐波产生降低。
Photoinduced second harmonic generation (SHG) in Au nanoparticle-deposited ZnO nanocrystallite (NC) films was explored by applying bicolor coherent treatment of a Nd-YAG laser with wavelength 1.06 mu m and its SHG. We have established that coexistence of the ZnO and Au nanoparticles gives a substantially larger SHG output with respect to pure ZnO NC deposited on the glass substrate. It was established that the value of the second order susceptibility is about 23 pm V-1. Better nonlinear optical susceptibilities were obtained during phototreatment at temperatures near 30-35 degrees C for the Au doped samples. The samples without gold NCs are temperature independent. Generally an increasing temperature leads to a decrease of the optical SHG.