Resonant exciton nonlinearities with spatial dispersion
- 15 November 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 12 (10) , 4512-4521
- https://doi.org/10.1103/physrevb.12.4512
Abstract
We have measured, using a tunable laser, the resonant second-harmonic generation produced by excitons in CdS and ZnO. We find that spatial-dispersion effects are very important in the harmonic generation, and that only by including them can the data be properly understood. A comparison of the magnitude and sign of the exciton nonlinear coefficient determined from our measurements is found to be in good agreement with theory.Keywords
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