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We develop a simple yet rigorous theory of the enhancement of optical absorption and emission by molecules placed in the vicinity of metal nanoparticles. Both enhancement effects exhibit strong dependence on the nanoparticle size. Using the example of Ag nanospheres embedded in GaN, we show that strong enhancement can be obtained only for those quantum dots, atoms, or molecules that are originally...
We study the enhanced absorption of optical radiation by molecules placed in the vicinity of spherical metal nano-particles in the realistic situation that includes perturbation of the optical field by the absorbing molecules and show that the enhancement is strong only for relatively weak and diluted absorbers.
We have developed a simple yet rigorous theory of the enhancement of photoluminescence (PL) efficiency in the vicinity of metal nanoparticles that takes into account the enhancement during optical absorption and emission. Using an example of active InGaN quantum dots (QDs) positioned in close proximity to Ag nanospheres embedded in GaN, we show that strong enhancement can be obtained only for those...
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