Seo, Eunsung Ahn, Joonmo Choi, Wonjun Lee, Hakjoon Jhon, Young Min Lee, Sanghoon Choi, Wonshik 2024-01-20T08:34:24Z 2024-01-20T08:34:24Z 2022-01-25 2014-10 0146-9592 https://pubs.kist.re.kr/handle/201004/126263 Control of near-field waves is the key to going beyond the diffraction limit in imaging and manipulating target objects. Here we present the focusing of plasmonic waves, a type of near-field waves, by the wavefront shaping of far-field waves. We coupled far-field waves to a random array of holes on a thin gold film to generate speckled plasmonic waves. By controlling the phase pattern of the incident waves with the wavelength of 637 nm, we demonstrated the focusing of plasmonic waves down to 170 nm at arbitrary positions. Our study shows the possibility of using disordered nanoholes as a plasmonic lens with high flexibility in the far-field control. (C) 2014 Optical Society of America English OPTICAL SOC AMER Far-field control of focusing plasmonic waves through disordered nanoholes Article 10.1364/OL.39.005838 1 OPTICS LETTERS, v.39, no.20, pp.5838 - 5841 OPTICS LETTERS 39 20 5838 5841 N scie scopus 000343912000013 2-s2.0-84908110490 Optics Optics Article SURFACE-PLASMONS APERTURE SENSORS MEDIA