Observation of Exciton Polariton Dispersion in CuCl
- 8 March 1971
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 26 (10) , 554-556
- https://doi.org/10.1103/physrevlett.26.554
Abstract
The upper branch of an exciton-polariton curve is measured directly for the first time. The two-photon spectrum of the first exciton line of CuCl shows a strong dependence on the total vector of the two beams. The resulting dispersion curve can be quantitatively explained using one-photon data.
Keywords
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