Li Jiangting, Peng Yufeng, Han Xueyun, Guo Shaoshuai, Liang Kunning, Zhang Minggao
College of Electronic and Electric Engineering, Henan Normal University, Xinxiang - PR China.
Henan Engineering Laboratory of Optoelectronic Technology and Advanced Manufacturing, Xinxiang - PR China.
J Appl Biomater Funct Mater. 2017 Jun 16;15(Suppl. 1):e19-e24. doi: 10.5301/jabfm.5000350.
Sodium copper chlorophyllin (SCC), as one of the derivatives of chlorophyll - with its inherent green features; good stability for heat, light, acids and alkalies; unique antimicrobial capability; and particular deodori zation performance - is widely applied in some fields such as the food industry, medicine and health care, daily cosmetic industry etc. SCC, as one of the metal porphyrins, has attracted much attention because of its unique electronic band structure and photon conversion performance. To promote the application of SCC in materials science; energy research and photonics, such as fast optical communications; and its use in nonlinear optical materials, solar photovoltaic cells, all-optical switches, optical limiters and saturable absorbers, great efforts should be dedicated to studying its nonlinear optical (NLO) properties.
In this study, the absorption spectra and NLO properties of SCC in aqueous solution at different concentrations were measured. The Z-scan technique was used to determine NLO properties.
The results indicated that the absorption spectra of SCC exhibit 2 characteristic absorption peaks located at the wavelengths 405 and 630 nm, and the values of the peaks increase with increasing SCC concentration. The results also showed that SCC exhibits reverse saturation absorption and negative nonlinear refraction (self-defocusing).
It can be seen that SCC has good optical nonlinearity which will be convenient for applications in materials science, energy research and photonics.
叶绿素铜钠盐（SCC）作为叶绿素的衍生物之一，具有其固有的绿色特性；对热、光、酸和碱具有良好的稳定性；独特的抗菌能力；以及特殊的除臭性能，被广泛应用于食品工业、医药保健、日用化妆品工业等一些领域。SCC作为金属卟啉之一，因其独特的电子能带结构和光子转换性能而备受关注。为了促进SCC在材料科学、能源研究和光子学（如高速光通信）中的应用，以及其在非线性光学材料、太阳能光伏电池、全光开关、光学限幅器和可饱和吸收体中的应用，应大力致力于研究其非线性光学（NLO）特性。
在本研究中，测量了不同浓度水溶液中SCC的吸收光谱和NLO特性。采用Z扫描技术测定NLO特性。
结果表明，SCC的吸收光谱在波长405和630 nm处呈现2个特征吸收峰，且峰的值随SCC浓度的增加而增大。结果还表明，SCC表现出反饱和吸收和负非线性折射（自散焦）。
可以看出，SCC具有良好的光学非线性，这将便于其在材料科学、能源研究和光子学中的应用。
