, Volume 74, Issue 6, pp 897-902,
Open Access This content is freely available online to anyone, anywhere at any time.

Optical properties of multilayer heterostructures based on zinc chalcogenides upon strong laser excitation

Abstract

We have carried out an experimental study of the nonlinear optical properties of multilayer heterostructures based on zinc chalcogenides when excited by ultrashort laser pulses. We have observed a strong change in the optical properties of the samples over a broad spectral region for two-photon and one-photon excitation of the ZnSe sublattice. The fast relaxation time of the nonlinearity is ∼2–5 psec in both cases. We propose a physical model qualitatively explaining the observed effects.

__________
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 74, No. 6, pp. 805–809, November–December, 2007.