A motivated post-doc is sought to investigate homogeneous and heterogeneous photochemical reactions of atmospheric importance by using cavity ring-down spectroscopy and its variants.  Ph.D. in physical chemistry, atmospheric chemistry or related fields is required. Prior experience in laser spectroscopy is preferred.  Send CV and reference letters to: Dr. Lei Zhu, Wadsworth Center, New York State Department of Health, HRI, Environmental Health Sciences, University at Albany, Albany, NY,