Diffraction of ultrashort optical pulses from circularly symmetric binary phase gratings Lõhmus, M. ; Bowlan, P. ; Piksarv, P. ; Valtna-Lukner, H. ; Trebino, R. ; Saari, P. Abstract Publication: Optics Letters Pub Date: April 2012 DOI: 10.1364/OL.37.001238 Bibcode: 2012OptL...37.1238L