1 INL-International Iberian Nanotechnology Laboratory, Ultrafast Bio- and Nanophotonics Group, Av. Mestre José Veiga S/n, 4715-330 Braga, Portugal.
2 CMEMS-UMinho, University of Minho, DEI, Campus de Azurém, Guimarães 4800-058, Portugal.
3 Faculty of Mechanical, Maritime, and Materials Engineering (3mE), Department of Precision and Microsystems Engineering (PME), Delft University of Technology, Mekelweg 2, Delft 2628 CD, The Netherlands.
4 Escola de Enxeñaría de Minas e Enerxía, University of Vigo, 36310 Vigo, Pontevedra, Spain.
5 CF-UM-UP, Centro de Física das Universidades do Minho e Porto, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal.