We have studied the weak localization (WL) effects in the electron accumulation layer on InN surface. Both the
spin-orbit relaxation time τso and the electron-phonon scattering time τe-ph have been extracted from the WL analysis.
We have observed that 1/τso increase with disorder and τe-ph exhibits a tendency to change gradually from the
characteristic dependence 1/τe-ph ∝ T3 in the pure case to the form of T2l-1 with increasing disorder.
The first experimental results, to our knowledge, for the wavelength dependence of the electro-optic (EO) coefficients of a poled polymer film containing photochromic dyes are presented. The method used for
measurement is based on the attenuated-total-reflection (ATR) technique. Initial results show that the electro-optic coefficients near absorption band decreases with the increases of light wavelength.
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