Third order optical susceptibilities of the Cu2O thin film

Third order optical susceptibilities of the Cu2O thin film
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Cu2O薄膜的三阶光学磁化率

DOI:
10.1016/j.tsf.2011.04.209
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发表时间:
2011-07
期刊:
影响因子:
2.1
通讯作者:
Lu, Peixiang
Lu, Peixiang
中科院分区:
材料科学3区
文献类型:
--
作者:
Fu, Ming;Long, Hua;Wang, Kai;Yang, Guang;Lu, Peixiang

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通过使用飞秒激光器(800 nm,50 fs,1 kHz)进行Z扫描方法,我们研究了氧化热(CU2O)膜的三阶光学非线性。使用脉冲激光沉积技术获得了沉积在石英底物上的单相Cu2O膜。分别通过X射线衍射,扫描电子显微镜和双束分光光度计来表征结构性能,表面形态和光学传输光谱。 Z-SCAN结果表明,Cu2O膜表现出大型非线性折射率,N2 = 3 x 10-3 cm2/gW,而两光子吸收系数(α2= 40 cm/gw)相对较小。这意味着Cu2O膜是非线性光子设备的有前途的候选人。
By performing Z-scan method with a femtosecond laser (800 nm, 50 fs, 1 kHz), we investigated the third-order optical nonlinearities of a cuprous oxide (Cu2O) film. Single-phase Cu2O film deposited on a quartz substrate was obtained using the pulsed laser deposition technique. The structure properties, surface morphology and optical transmission spectrum were characterized by X-ray diffraction, scanning electron microscopy and double beam spectrophotometer, respectively. The Z-scan results show that the Cu2O film exhibits large nonlinear refractive index, n2= 3 x 10-3 cm2/GW, while the two-photon absorption coefficient, α2= 40 cm/GW, is relatively small. It implies that the Cu2O film is a promising candidate for nonlinear photonic devices.
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