Details

Autor(en) / Beteiligte

• Durán-Valdeiglesias, Elena
• Zhang, Weiwei
• Alonso-Ramos, Carlos
• Serna, Samuel
• Le Roux, Xavier
• Maris-Morini, Delphine
• Caselli, Niccolò
• Biccari, Francesco
• Gurioli, Massimo
• Filoramo, Arianna
• Cassan, Eric
• Vivien, Laurent

Titel

Tailoring carbon nanotubes optical properties through chirality-wise silicon ring resonators

Ist Teil von

• Scientific reports, 2018-07, Vol.8 (1), p.11252-9, Article 11252

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2018

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Semiconducting single walled carbon nanotubes (s-SWNT) have an immense potential for the development of active optoelectronic functionalities in ultra-compact hybrid photonic circuits. Specifically, s-SWNT have been identified as a very promising solution to implement light sources in the silicon photonics platform. Still, two major challenges remain to fully exploit the potential of this hybrid technology: the limited interaction between s-SWNTs and Si waveguides and the low quantum efficiency of s-SWNTs emission. Silicon micro-ring resonators have the potential capability to overcome these limitations, by providing enhanced light s-SWNT interaction through resonant light recirculation. Here, we demonstrate that Si ring resonators provide SWNT chirality-wise photoluminescence resonance enhancement, releasing a new degree of freedom to tailor s-SWNT optical properties. Specifically, we show that judicious design of the micro-ring geometry allows selectively promoting the emission enhancement of either (8,6) or (8,7) SWNT chiralities present in a high-purity polymer-sorted s-SWNT solution. In addition, we present an analysis of nanometric-sized silicon-on-insulator waveguides that predicts stronger light s-SWNT interaction for transverse-magnetic (TM) modes than for conventionally used transverse-electric (TE) modes.