D’Aguanno, GiuseppeMattiucci, NadiaBloemer, Mark J.2020-06-032020-06-032008-07-01Giuseppe D'Aguanno, Nadia Mattiucci, and Mark J. Bloemer, "Ultraslow light pulses in a nonlinear metamaterial," J. Opt. Soc. Am. B 25, 1236-1241 (2008), https://doi.org/10.1364/JOSAB.25.001236https://doi.org/10.1364/JOSAB.25.001236http://hdl.handle.net/11603/18811We find the analytical expression for the threshold intensity necessary to launch ultraslow light pulses in a metamaterial with simultaneous cubic electric and magnetic nonlinearity. The roles played by the permittivity, the permeability, the electric cubic nonlinearity, the magnetic cubic nonlinearity and the pulse duration are clearly identified and discussed.6 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Public Domain Mark 1.0This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Text