Université de Neuchâtel

Measuring optical phase singularities at subwavelength resolution

Dändliker, René ; Märki, Iwan ; Salt, Martin Guy ; Nesci, Antonello

In: Journal of Optics A: Pure and Applied Optics, 2004, vol. 6, no. 5, p. 189-196

We will present experimental and theoretical studies of optical fields with subwavelength structures, in particular phase singularities and coherent detection methods with nanometric resolution. An electromagnetic field is characterized by an amplitude, a phase and a polarization state. Therefore, experimental studies require coherent detection methods, which allow one to measure the amplitude...