Photonic Bloch Oscillations and Zener Tunneling in Dual-Periodical Multilayers Made of Porous Silicon: Effect of Angle of Incidence

Abstract:

Experimental evidence of photon Bloch Oscillations (PBOs) and Zener tunneling (ZT) in dual-periodical (DP) superlattices made of porous silicon (PSi), is presented. An introduction of linear gradient in physical layer thicknesses in DP structure, composed by stacking two different periodic substructures N times, where (N-1) resonances appear, i.e, WSLs resonances and Zener tunneling of the nearest resonances of two consecutive minibands can be observed depending on the values of applied gradient. Theoretical time-resolved reflection and scattering state maps show photonic Bloch oscillations (BOs) and Zener tunneling for a range of incidence angles. Measured reflection reveals the presence of Wannier-Stark ladders (WSLs) and ZT in the near infrared region.

• Periodical: Journal of Nano Research (Volume 28)
• Pages: 83-90
• DOI: https://doi.org/10.4028/www.scientific.net/JNanoR.28.83
• Online since: June 2014
• Authors: J.O. Estevez*, J. Arriaga, E. Reyes-Ayona, V. Agarwal
• Keywords: Photonic Crystal (PC), Physical Thickness Gradient, Porous Silicon, Zener Tunneling

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