![LOPADLW LOPADLW](http://lumin.ens-paris-saclay.fr/servlet/com.univ.collaboratif.utils.LectureFichiergw?CODE_FICHIER=1396452356403&ID_FICHE=183354)
SEM image of a chiral structure fabricated by the LOPA (low one-photon absorption) based DLW (Direct laser writing) technique.
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Second harmonic mapping image of a 2D chi(2) grating structure fabricated by direct laser writing technique. For details see the paper by Do et al., pp.
4664-4670.