COHERENT TRANSIENTS INVOLVING 2P EXCITONS IN ZNSE

Using resonant SHG effect and a novel spectroscopic technique which ut ilizes a phase-locked laser pulse pair: we have investigated the dynam ical behavior of 2P excitons. The interferogram of exciton polarizatio n has a tail of a few picoseconds. Beating structure was observed in d ecaying profile. This structure can be explained by polarization inter ference between the heavy-and light-hole excitons split by strain. (C) 1998 Elsevier Science B.V. All rights reserved.