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|Title:||Femtosecond third-order optical nonlinearity of polycrystalline BiFeO 3|
|Citation:||Gu, B., Wang, Y., Wang, J., Ji, W. (2009-06-22). Femtosecond third-order optical nonlinearity of polycrystalline BiFeO 3. Optics Express 17 (13) : 10970-10975. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.17.010970|
|Abstract:||We report both linear and nonlinear optical properties of a ferroelectric thin film of polycrystalline BiFeO 3 deposited on a quartz substrate. The linear refraction index and absorption coefficient of the film are determined as a function of light wavelength by optical transmittance measurements. By performing Z-scan experiments with femtosecond laser pulses at a wavelength of 780 nm, the third-order nonlinear refraction index and two-photon absorption (2PA) coefficient are measured to be 1. 5 × 10 -4cm2/GW and 16 cm/GW, respectively. The results indicate that the thin film of polycrystalline BiFeO 3 is a promising candidate for applications in nonlinear photonic devices. © 2009 Optical Society of America.|
|Source Title:||Optics Express|
|Appears in Collections:||Staff Publications|
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