Physical Review LettersComment on “Enhancement of Second-Order Nonlinear-Optical Signals by Optical Stimulation”Maksim Grechko, Grazia Gonella, Mischa BonnPublished Feb 3, 2016• 1 citationPublisherAbstractReceived 29 June 2015DOI:https://doi.org/10.1103/PhysRevLett.116.059401© 2016 American Physical SocietyDOI10.1103/physrevlett.116.059401