Ciattoni Alessandro, Marini Andrea, Rizza Carlo
Opt Lett. 2016 Jul 1;41(13):3102-5. doi: 10.1364/OL.41.003102.
We investigate the interaction of two pulses (pump and probe) scattered by a nonlinear epsilon-near-zero (ENZ) slab whose thickness is comparable with the ENZ wavelength. We show that when the probe has a narrow spectrum localized around the ENZ wavelength, its transmission is dramatically affected by the intensity of the pump. Conversely, if the probe is not in the ENZ regime, its propagation is not noticeably affected by the pump. Such all-optical modulation is due to the oversensitive character of the ENZ regime, and it is so efficient that it even occurs in a wavelength thick slab.
我们研究了由厚度与ε近零（ENZ）波长相当的非线性ENZ平板散射的两个脉冲（泵浦脉冲和探测脉冲）之间的相互作用。我们表明，当探测脉冲具有围绕ENZ波长局域化的窄光谱时，其透射率会受到泵浦脉冲强度的显著影响。相反，如果探测脉冲不在ENZ regime中，其传播不会受到泵浦脉冲的明显影响。这种全光调制是由于ENZ regime的超敏感特性，并且它非常高效，甚至在波长厚度的平板中也会发生。
