Resonant electronic nonlinearity and laser heating induced nonlinearity of chlorophosphonazo I

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• 作者：Tingchao He ; Ling Zhang ; Yanfeng Yin ; Yongguang Cheng ; Li Ding ; Yujun Mo
• 关键词：Nonlinear refraction ; Z-scan technique ; Electronic nonlinear effect ; Laser heating effect
• 刊名：Physics Letters A
• 出版年：2008
• 期刊代码：57_03759601
• 类别：ph
• 出版时间：19 May 2008
• 卷：372
• 期：21
• 页码：3937-3940
• 文件大小：237 K

摘要

The nonlinear refraction of chlorophosphonazo I (CPA I) was investigated using the Z-scan technique with a pulse Nd:YAG laser and a cw HeNe laser as excitation sources. Positive and large nonlinear refractive index attributed to resonant electronic nonlinear effect was observed under pulse 532 nm excitation. Under cw HeNe 633 nm excitation, the origin of optical nonlinearity was discussed in term of laser heating effect. The experimental results show that CPA I will have potential applications in nonlinear optical devices.