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Near-field optical second-harmonic microscopy

Summary form only given. We have studied near-field SHG from various samples: rough metal films, LiNbO/sub 3/ waveguide structures, piezoceramics, etc. Image acquisition time has been substantially reduced in comparison with previous work, down to a few tens of minutes. We show images of surface topography and SHG intensity measured simultaneously using the surface of a poled piezoelectric tube as a sample.