Electro-Optic Coefficients of Guest-Host Poled Polymers Containing Chromophores with Large First Hyperpolarizabilities: A Test of the Two-State, Oriented-Gas Modelthe electro-optic r33, coefficients of poled poly(methylmethacrylate) films containing dyes with first hyperpolarizabilities that span nearly two orders of magnitude have been determined at 820 and 1300 nm by modulated ellipsometry.