Abstract
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
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