Large Nonlinear Optical Property of SrBi2Nb2O9 Thin Films Prepared by RF Magnetron Sputtering
Well-crystallized SrBi2Nb2O9 (SBN) thin films with good surface morphology were fabricated on quartz glass substrates by RF magnetron sputtering technique at a deposition temperature of 600°C under the O2/Ar(3:1) pressure of 2.4 Pa for 2 hour. The films exhibited bismuth-layered perovskite phase structure without pyrochlore phase and the ratio of Sr:Bi:Nb is about 1:1.92:1.98. The nonlinear optical properties of the films were determined by a single beam Z-scan technique at a wavelength of 532 nm with laser duration of 25 ps. The measured values of the real and imaginary parts of the third-order nonlinear optical susceptibility were 4.324×10-8esu and 1.278×10-8esu, respectively. The large nonlinear optical effect shows that the SrBi2Nb2O9 thin films have great potential application in designing nonlinear optical devices.
Wei Pan and Jianghong Gong
K. S. Chen et al., "Large Nonlinear Optical Property of SrBi2Nb2O9 Thin Films Prepared by RF Magnetron Sputtering", Key Engineering Materials, Vols. 336-338, pp. 558-560, 2007