We report the linear and nonlinear optical properties of sol-gel prepared BaxSr1-xTiO3 (BST) crystalline powders. The results from powder X-ray diffraction, birefringence, and second-order optical nonlinearity measurements indicate that the paraelectric-ferroelectric phase transition of Ba0.75Sr0.25TiO3 occurs near room temperature. The second-order optical nonlinearity of the ferroelectric BST is about 7.9 pm/V. The index of refraction, n = 2.2, and birefringence, Delta n(B) similar to 0.05, are also appropriate for practical nonlinear optical applications. (C) 2000 Elsevier Science Ltd. All rights reserved.
机构:Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
Lee, CT
Zhang, MS
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Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R ChinaNanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
Zhang, MS
Yin, Z
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机构:Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
Yin, Z
Zhu, W
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机构:Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China