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Multi-waveguide excitation in fs laser written waveguide arrays
|Applied Physics. B 87 (2007), No.1, pp.17-20|
| Journal Article|
|Fraunhofer IOF ()|
We 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.