Optical Properties Of Relaxor Ferroelectric PIN-PMN-PT Single Crystal

Recent years, high quality and uniform relaxation ferroelectric single crystal[Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-Pb TiO3,(PIN-PMN-PT)] is attentioned by the of the piezoelectric field. With the excellent piezoelectric ?electromechanical properties and high Curie temperature, phase transition temperature and coercive field, it Has become a new generation of the great potential of functional materials. In this paper, using The linear electro-optic properties of relaxor ferroelectric crystal 0.24PIN-0.43PMN-0.33 PT in the monoclinic phase as the research object. Using the transmission spectra and the Mach-Zehnder interference method, studied the domain structure, band structure and electro-optical properties systematically.The linear electro-optic properties of relaxor ferroelectric crystal0.24PIN-0.43PMN-0.33 PT in the monoclinic phase poled along [011]c direction and it will Become more transparent. Through calculation of the transmissivity material absorption coefficient, then calculate the single crystal directly forbidden band width Egd. The Sellmeier dispersion equation of n for0.24PIN-0.43PMN-0.33 PT single crystal is calculated by fitting the experimental data. The parameters of room temperature Sellmeier oscillator were also calculated.The linear electro-optic coefficient were determined using the modified Mach-Zehnder interferometer method to be ?13=–21.8pm/V,?23=64.7pm/V,?33=85.8pm/V, which have eliminated the error caused by piezoelectric effect in the direction of the optical. The effective electro-optic coefficient was also calculated:?c=107.6pm/V. The result of the experiment shown that the [011]c poled single crystal has the higher electro-optic coefficient ?23,?33. Under the condition of excellent light transmittance these two electro-optic coefficient can be used in the actual electro-optical device applications.