TY - JOUR
T1 - Effect of lanthanum doping on linear and nonlinear-optical properties of Bi3TiNbO9 thin films
AU - Chen, Hengzhi
AU - Yang, Bin
AU - Zhang, Mingfu
AU - Wang, Feiyan
AU - Cheah, Kokwai
AU - Cao, Wenwu
N1 - Funding Information:
This work was supported by the National Nature Science Foundation of China (Grant No. 10704021).
PY - 2011/4/28
Y1 - 2011/4/28
N2 - Lanthanum doped Bi3TiNbO9 thin films (LBTN-x, La 3+ contents x = 5%, 15%, 25% and 35 mol.%) with layered perovskite structure were fabricated on fused silica by pulsed laser deposition method. Their linear and nonlinear optical properties were studied by transmittance measurement and Z-Scan method. All films exhibit good transmittance (>55%) in visible region. For lanthanum doping content are x = 5%, 15% and 25 mol.%, the nonlinear absorption coefficient of LBTN-x thin films increases with the La 3+ content, then it drops down at x = 35 mol.% when the content of La3+ in (Bi2O2)2+ layers is high enough to aggravate the orthorhombic distortion of the octahedra. We found that, 25 mol.% is the optimal La3+ content for LBTN-x thin films to have the largest nonlinear absorption coefficient making the LBTN-x film a promising candidate for absorbing-type optical device applications.
AB - Lanthanum doped Bi3TiNbO9 thin films (LBTN-x, La 3+ contents x = 5%, 15%, 25% and 35 mol.%) with layered perovskite structure were fabricated on fused silica by pulsed laser deposition method. Their linear and nonlinear optical properties were studied by transmittance measurement and Z-Scan method. All films exhibit good transmittance (>55%) in visible region. For lanthanum doping content are x = 5%, 15% and 25 mol.%, the nonlinear absorption coefficient of LBTN-x thin films increases with the La 3+ content, then it drops down at x = 35 mol.% when the content of La3+ in (Bi2O2)2+ layers is high enough to aggravate the orthorhombic distortion of the octahedra. We found that, 25 mol.% is the optimal La3+ content for LBTN-x thin films to have the largest nonlinear absorption coefficient making the LBTN-x film a promising candidate for absorbing-type optical device applications.
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U2 - 10.1016/j.jallcom.2011.02.048
DO - 10.1016/j.jallcom.2011.02.048
M3 - Article
AN - SCOPUS:79953223270
SN - 0925-8388
VL - 509
SP - 5364
EP - 5367
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 17
ER -