The quantum-confined CdS

x

Se

1-x

microcrystallite-doped glasses with 10-45Å size particles are successfully prepared.Transmission electron microscopy has been used to observe the microcrystallite structure and morphology characteristics in glasses.The third-order nonlinear susceptibility and plasma recombination time of the glass is measured by Four-wave mixing technique.The results showed x

(3)

= 1×10

-8

esu

τ=35psec.The dependence of photogenerated carrier 3-dimensional quantum-confined effect

susband structrue

microcrysta-llite size and band gap energy in semiconductor-doped glass are stud-ied.We analyze thoertically the dependence of microcrystallite size

volume occupied ratio and third-order nonlinear susceptibility x

(3)

.