Szameit, A.A.SzameitHartung, H.H.HartungDreisow, F.F.DreisowNolte, S.S.NolteTünnermann, A.A.Tünnermann2022-03-032022-03-032007https://publica.fraunhofer.de/handle/publica/21292310.1007/s00340-006-2556-8We introduce a new technique to excite multiple waveguides in fs laser written waveguide arrays. Using a microstructured grating, we were able to couple almost all of the power of the laser beam into multiple waveguides in one- and two-dimensional lattices. Tilting the sample a defined phase shift between adjacent waveguides can be obtained, which allows anomalous diffraction and refraction to be studied.en620621Multi-waveguide excitation in fs laser written waveguide arraysjournal article