Extreme ultraviolet photon conversion efficiency of tetraphenyl butadiene Graybill, Joshua R. ; Shahi, Chandra B. ; Coplan, Michael A. ; Thompson, Alan K. ; Vest, Robert E. ; Clark, Charles W. Abstract Publication: Applied Optics Pub Date: February 2020 DOI: 10.1364/AO.380185 Bibcode: 2020ApOpt..59.1217G