Abstract
The effects of small relativistic corrections to the off-resonant polarizability, hyperpolarizability, and second hyperpolarizability are investigated. Corrections to linear- and nonlinear-optical coefficients are demonstrated in the three-level ansatz, which includes corrections to the Kuzyk limits when scaled to semirelativistic energies. It is also shown that the maximum value of the hyperpolarizability is more sensitive than the maximum polarizability or second hyperpolarizability to lowest-order relativistic corrections. These corrections illustrate how the intrinsic nonlinear-optical response is affected at semirelativistic energies.
- Received 20 August 2014
DOI:https://doi.org/10.1103/PhysRevA.91.013832
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