Observation of nonlinear topological corner states
作者： Thomas Zentgraf , Yuri Kivshar , Duk Yong Choi , Sergey Kruk , Shuang Zhang
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摘要: … (df) Surface images of the nonlinear optical signal at the third harmonic wavelength measured for (d) 1730 nm, (e) 1590 nm, and (f) 1615 nm excitation wavelengths revealing the bulk …
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