Hannes W-R, Krauß-Kodytek L, Ruppert C, Betz M, Meier T. Intensity-dependent degenerate and non-degenerate nonlinear optical absorption of direct-gap semiconductors. In: Betz M, Elezzabi AY, eds. Ultrafast Phenomena and Nanophotonics XXIII. Vol 10916. SPIE Proceedings. ; 2019. doi:10.1117/12.2503539