Spectroscopic studies of resonant coupling of silver optical antenna arrays to a near-surface quantum well

Abstract

The coupling of radiation emitted on semiconductor inter-band transitions to resonant optical-antenna arrays allows for enhanced light–matter interaction via the Purcell effect. Semiconductor optical gain also potentially allows for loss reduction in metamaterials. Here we extend our previous work on optically pumped individual near-surface InGaAs quantum wells coupled to silver split-ring-resonator arrays to wire and square-antenna arrays. By comparing the transient pump-probe experimental results with the predictions of a simple model, we find that the effective coupling is strongest for the split rings, even though the split rings have the weakest dipole moment. The effect of the latter must thus be overcompensated by a smaller effective mode volume of the split rings. Furthermore, we also present a systematic variation of the pump-pulse energy, which was fixed in our previous experiments.

Плазмон-Экситонные Поляритоны В Сверхрешетках

“…Влияние плазмонов на экситоны большого радиуса исследовалось преимущественно для нульмер-ных экситонов в квантовых точках или микрокристал-лах [9,[11][12][13][14] и для квазидвумерных экситонов в кван-товых ямах [10,[15][16][17] или полупроводниковых покрыти-ях [18]. В работах [19,20] изучались также оптические переходы в квантовых ямах с участием электромагнит-ных мод массива наноантенн. В работе [16] была развита теория упругого рассеяния света в области плазмон-экситонного резонанса металлической наночастицы, рас-положенной вблизи от квантовой ямы.…”

Molecular beam epitaxy grown indium self-assembled plasmonic nanostructures

“…In the self-assembled case there is also no need for fabrication or post-processing for optical experiments, eliminating possible sources of impurities and contamination. By tuning the sizes of these nanostructures the resonant wavelength can be tuned [5] to be in resonance with QWs [6,7] or QDs [8] just a few nanometers beneath the metallic structures. Growing these resonant indium islands in the same process as the semiconductor growth with MBE now opens up the possibility of encapsulating [9] the islands with more semiconductor material, including gain material.…”

Light–matter interactions at the nanoscale

“…(i) electromagnetic field distributions and linear optical properties of plasmonic nanostructures [5][6][7][8][9]; (ii) metamaterials [10]; (iii) ultrafast and nonlinear response of plasmonic materials [11][12][13][14][15]; (iv) energy transfer in nanosystems [16]; (v) coupling of SPs to quantum emitters [17][18][19][20][21][22];…”