کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1540277 996657 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radiative and non-radiative decay of a single molecule close to a metallic nanoparticle
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Radiative and non-radiative decay of a single molecule close to a metallic nanoparticle
چکیده انگلیسی

We study the spontaneous emission of a single emitter close to a metallic nanoparticle, with the aim to clarify the distance dependence of the radiative and non-radiative decay rates. We derive analytical formulas based on a dipole–dipole model, and show that the non-radiative decay rate follows a R−6 dependence at short distance, where R is the distance between the emitter and the center of the nanoparticle, as in Förster’s energy transfer. The distance dependence of the radiative decay rate is more subtle. It is chiefly dominated by a R−3 dependence, a R−6 dependence being visible at plasmon resonance. The latter is a consequence of radiative damping in the effective dipole polarizability of the nanoparticle. The different distance behavior of the radiative and non-radiative decay rates implies that the apparent quantum yield always vanishes at short distance. Moreover, non-radiative decay is strongly enhanced when the emitter radiates at the plasmon-resonance frequency of the nanoparticle.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 261, Issue 2, 15 May 2006, Pages 368–375
نویسندگان
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