We discuss experimental observations of diffusely scattered second-harmonic light from a silver surface with rms roughness comparable to the illumination wavelength. The surface produces a backscattering peak in its linear scattering distribution as is expected, but presents a distinct minimum there in the second harmonic. The minimum is attributed to multiple scattering within surface valleys.
Second-harmonic generation from a strongly rough metal surface / K. A. ODonnell;R. Torre. - In: OPTICS COMMUNICATIONS. - ISSN 0030-4018. - STAMPA. - 138:(1997), pp. 341-344. [10.1016/S0030-4018(97)00067-9]
Second-harmonic generation from a strongly rough metal surface
TORRE, RENATO
1997
Abstract
We discuss experimental observations of diffusely scattered second-harmonic light from a silver surface with rms roughness comparable to the illumination wavelength. The surface produces a backscattering peak in its linear scattering distribution as is expected, but presents a distinct minimum there in the second harmonic. The minimum is attributed to multiple scattering within surface valleys.
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