Apertureless scanning near-field optical microscopy: A comparison between homodyne and heterodyne approaches

Lewis Gomez, Renaud Bachelot, Alexandre Bouhelier, Gary P. Wiederrecht, Shih Hui Chang, Stephen K. Gray, Feng Hua, Seokwoo Jeon, John A. Rogers, Miguel E. Castro, Sylvain Blaize, Ilan Stefanon, Gilles Lerondel, Pascal Royer