摘要: The dispersion of both the quadratic and linear electro‐optic effects in flux‐grown crystals BaTiO3 has been measured polarimetrically between 0.4 1.0 μ yielding (g11 ‐ g12) rc =r33 (na/nc)3 r13. A strong was found: increases to double its long‐wavelength limit at μ. Both unclamped (low frequency) clamped measurements were made. Birefringence principal indices also determined. two‐oscillator Sellmeier model, which one oscillator frequency is polarization dependent, shown represent closely all data. unclampled potential, specifies magnitude shift, 3.9 eV m4 C−2, while value one‐third as large. Ultraviolet reflectivity calculated from model assuming reasonable values empirical damping agrees with observations Cardona Gahwiller.
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