text: In 1981 he received Bourke Medal from Faraday Society and a year later became Christianson Fellow at St. Catherines College, a division of Oxford University. The same year he became a fellow at American Academy of Arts and Sciences. Another two years went by and in 1984 he was awarded an Honorary degree from Scottish Heriot-Watt University. From 1985 to his death he was a chair of the John Scott Advisory Panel for the City of Philadelphia. In 1986 he got Special Presidents Award from SPIE. Next year, he became associate professor at University of Paris and two years later became Grenoble Professor at the University of Grenoble. The same year he became a fellow at Optical Society of America.