Nanofabrication of millimeter-level nanostructure via laser-focused atomic deposition

We describe the fabrication of a large area of chromium nanogratings formed by laser focusing techniques. The focusing occurs in an elliptical laser standing-wave field, resulting in a line array covering an area of approximately 1.5 × 1.5 mm2 with a spacing of 212.78 nm. The experimental arrangement for laser focusing is described. Improvements in the technique and potential applications are also mentioned.