Axial spectral scans of polarization dependent third harmonic generation in a multimode photonic crystal fiberD. Lorenc, I. Bugar, F. Uherek, M. Szpulak, W. Urbanczyk and A. M. ZheltikovJ. Eur. Opt. Soc.-Rapid Publ., 2 (2007) 07001DOI: https://doi.org/10.2971/jeos.2007.07001