Abstract

Transient spectra of fast luminescence from short-lived excited states have been detected with a temporal resolution as short as a 10-ps excitation laser pulse and with gain as high as 10³, using three-wave optical parametric conversion in a nonlinear crystal. This technique yields high gain in detection of weak light signals in contrast to the conventional upconversion or downconversion techniques in time-resolved spectroscopy.

© 1987 Optical Society of America