Determination of optical nonlinearities in Cu(mpo)2 by Z-scan technique

被引：20
|
作者：
Guo, SL [1 ]
Xu, L
Wang, HT
You, XZ
Ming, NB
机构：
[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[2] Nanjing Inst Meteorol, Dept Phys, Nanjing 210044, Peoples R China
[3] Nanjing Univ, State Key Lab Coordinat Chem, Nanjing 210093, Peoples R China
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2003年 / 35卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Cu(mpo)(2)=C10H8N2CuO2S2; nonlinear absorption; nonlinear refraction; Z-scan technique;
D O I：
10.1023/A:1023981924486
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The optical nonlinearities of Cu(mpo)(2) [formula=C10H8N2CuO2S2] complex have firstly been investigated by using the Z-scan technique with a nanosecond-pulsed Nd:YAG laser at its second harmonic (532 nm) radiation. The nonlinear optical absorption and refraction coefficients of Cu(mpo)(2) have been measured with the different on-axial peak irradiances I-0 at the waist ranging from 0.48 to 5.66 GW/cm(2). The nonlinear transmittance characteristics exhibit the near resonant two-photon absorption (TPA) at 532 nm and are explained by a population redistribution model. The nonlinear absorption originates from the near resonant TPA while the mechanism of the nonlinear refraction is the near resonant TPA transition enhancement. The linear increasing dependences of the optical nonlinearities on the incident irradiance arise from the population redistribution due to the near resonant TPA.
引用
收藏
页码：693 / 703
页数：11
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