SCIENCE paper on orbital angular momentum of light in PCF

Excitation of Orbital Angular Momentum Resonances in Helically Twisted Photonic Crystal Fiber [published in Science 27 July 2012]

authored by the MPL people: G. K. L. Wong, M. S. Kang, H. W. Lee, F. Biancalana, C. Conti, T. Weiss, P.St.J.Russell.