By Anatoly Zayats
Publication Date: 2013-07-15
Number of Pages: 336
This e-book, edited via of the main revered researchers in plasmonics, provides an outline of the present kingdom in plasmonics and plasmonic-based metamaterials, with an emphasis on energetic functionalities and a watch to destiny advancements. This ebook is multifunctional, helpful for beginners and scientists attracted to functions of plasmonics and metamaterials in addition to for confirmed researchers during this multidisciplinary sector.
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Additional info for Active Plasmonics and Tuneable Plasmonic Metamaterials
As in the previous section, we will consider two cases: stationary and short-pulse pumping. We again start with the case of the stationary pumping at a rate of g = 5 × 1012 s−1 . 5f the dynamics of such a spaser. 65 that is defined by the competition of the pumping and the enhanced decay into the SP mode (the purple curves). This level is so high because the spasing SP mode population vanishes and the stimulated emission is absent. After reaching this stable state (which one can call, say, “logical zero”), the spaser stays in it indefinitely long despite the continuing pumping.
Consequently, the influx and outflow of energy balance each other. Thus, selecting a metamaterial slab instead of an infinite crystal will not affect the loss and its compensation. We will denote the local field at a point r inside this metamaterial as e(r, ω) = −∇ϕ(r, ω). 36) for r belonging to the surface S of the slab under consideration. To present our results in a closed form, we first derive a homogenization formula used in Reference 85 (see also references cited therein). 37) V where ε(r, ω) is a position-dependent permittivity.
CW regime. This makes the complete loss compensation and its overcompensation impossible in a dense resonant metamaterial where the feedback is created by the internal inhomogeneities (including its periodic structure) and the facets of the system. 53), which is also the spasing condition, is geometry-independent, it is useful to illustrate it for commonly used plasmonic metals, gold and silver whose permittivity we adopt from Reference 69. 3 × 10−18 esu. 6. (Note that this figure expresses a condition of spasing equivalent to that of Fig.
Active Plasmonics and Tuneable Plasmonic Metamaterials by Anatoly Zayats
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