Direct Creation of Excitonic Molecules in CuCl by Giant Two-Photon Absorption

1 April 1974

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 32 (13) , 727-730
https://doi.org/10.1103/physrevlett.32.727

Abstract

The two-photon absorption spectrum due to excitonic molecules is measured in CuCl at 77 and 4.2°K. We measured values of the two-photon transition cross section of the order of

10^{- 44}

{cm}^{4}

sec and estimated a peak value of

10^{- 42}

. The binding energy of the molecule is found to be 255

{cm}^{- 1}

Keywords

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