An investigation is made on the optical nonlinear characteristics of MgF<sub>2</sub> films containing Cu nanoparticles. When the Cu volume fraction is 0.1, at approximately \var<i>ε</i><sub>m</sub>+ 2<i>ε</i><i><sub>d</sub></i>= 0, the film exhibits a strong third-order optical nonlinear refractive coefficient of 1.010<sup>-9</sup> cm<sup>2</sup>/W, a nonlinear refractive index of about -4.0×10<sup>-7</sup> esu, a third-order optical nonlinear response of about 6.810<sup>-8</sup> esu, and a figure of merit of about 1.010<sup>-11</sup>. The result shows that the film may have potential applications in optoelectronic technology.
© 2009 Chinese Optics Letters
Zhaoqi Sun, Lei Xiao, Ling Cao, Xueping Song, and Daming Sun, "Optical nonlinear characteristics of MgF2 films containing Cu nanoparticles," Chin. Opt. Lett. 7, 964-966 (2009)