کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9868416 1530690 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
First-principle calculation of two-photon absorption in BaTiO3
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
First-principle calculation of two-photon absorption in BaTiO3
چکیده انگلیسی
We have derived a formula of third-order nonlinear optical susceptibility χ(3)(−ω;ω,−ω,ω). Under a scissor approximation by using a first-principle band structure approach, we have calculated the third-order nonlinear susceptibility χ(3), dielectric constant ɛ, and the nonlinear optical absorption for BaTiO3. The imaginary parts of the nonlinear susceptibility, dielectric constant, and two-photon absorption coefficient were calculated and discussed. The calculated two-photon absorption coefficient β equals 0.17 cm/GW, is in good agreement with the experimental value of 0.1 cm/GW under 596 nm laser excitation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 335, Issues 5–6, 21 February 2005, Pages 499-504
نویسندگان
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