In 1990 he received Philadelphia Section Award and the same year got National Institutes of Health Merit Award. Six years have passed and he received another award, this time it was LICOR Award from University of Nebraska. The next year brought him Ellis Lippincott Award from the Optical Society of America. 1998 brought him two chair positions, one was at the Chemical Physics division of the American Physical Society, the other one was at the Biophysical Chemistry division of American Chemical Society. He was also awarded the E. Bright Wilson Award in Spectroscopy.  From 2000 till his death he was an Honorary Professor of Physics at University of Strathclyde.