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采用脉冲激光沉积技术在Si(100)和熔石英基片上制备了单相的CuO薄膜.通过X射线衍射仪,拉曼光谱仪,场发射扫描电镜和紫外可见光光度计对薄膜的结构,表面形貌和光学性质进行了表征.场发射扫描电镜结果表明CuO薄膜中晶粒排列致密且分布均匀,其尺寸约为45nm.结合飞秒激光(800nm,50fs)和Z扫描方法测量了薄膜的三阶非线性光学特性,结果表明CuO薄膜具有超快的非线性光学响应且非线性折射率和非线性吸收系数均为负值,其大小分别为-3.96×10-17m2/W和-1.69×10-10m/W.表明CuO薄膜在超快光开关等非线性光学器件方面具有潜在的应用前景.
Single-phase CuO thin films were prepared on Si (100) and fused silica substrates by pulsed laser deposition. The structure, morphology and surface morphology of the films were characterized by X-ray diffraction, Raman spectroscopy, field emission scanning electron microscopy and UV- And optical properties were characterized by field emission scanning electron microscopy.The results show that the grains in the CuO thin film are densely arranged and uniformly distributed and have a size of about 45nm.The third order nonmagnetic properties of the film are measured by the combination of femtosecond laser (800nm, 50fs) and Z-scan method Linear optical properties. The results show that the CuO films have ultrafast nonlinear optical response and the nonlinear refractive index and nonlinear absorption coefficient are negative, and their sizes are -3.96 × 10-17m2 / W and -1.69 × 10-10m / W. It shows that CuO films have potential applications in nonlinear optics such as ultrafast optical switches.