Download PDF by Anatoly Zayats: Active Plasmonics and Tuneable Plasmonic Metamaterials
By Anatoly Zayats
Publication Date: 2013-07-15
Number of Pages: 336
This publication, edited by way of of the main revered researchers in plasmonics, provides an outline of the present nation in plasmonics and plasmonic-based metamaterials, with an emphasis on energetic functionalities and an eye fixed to destiny advancements. This booklet is multifunctional, necessary for novices and scientists attracted to purposes of plasmonics and metamaterials in addition to for confirmed researchers during this multidisciplinary quarter.
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Additional info for Active Plasmonics and Tuneable Plasmonic Metamaterials
Simultaneously, at t = 0, some number of plasmons are injected (say, by an external nanoplasmonic circuitry). In response, the spaser should produce an amplified pulse of the SP excitation. 5d. As we see from panel (c), independent of the initial number of SPs, the spaser always generates a series of SP pulses, of which only the first pulse is large (at or above the logical level of Nn ∼ 100). ) The underlying mechanism of such a response is the rapid depletion of the inversion seen in panel (d), where energy is dissipated in the metal of the spaser.
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. ) For silver as a metal and nc = 6 × 1018 cm−3 , the corresponding lower (black) curve in panel (a) does not reach the value of 1, implying that no full loss compensation is achieved. 6a does cross the threshold line in the near-IR region.
This makes our theory not directly applicable to them. 54)] is satisfied, the system still may spase on the hot-spot defect modes. In an experimental study of the lasing spaser , a nanofilm of PbS QDs was positioned over a 2d metamaterial consisting of an array of negative split ring resonators. When the QDs were optically pumped, the system exhibited an increase of the transmitted light intensity on the background of a strong luminescence of the QDs but apparently did not reach the lasing threshold.
Active Plasmonics and Tuneable Plasmonic Metamaterials by Anatoly Zayats