Light transport through the band-edge states of Fibonacci quasicrystals

Anno: 2003

Autori: Dal Negro L., Oton CJ., Gaburro Z., Pavesi L., Johnson P., Lagendijk A., Righini R., Colocci M., Wiersma D.

Affiliazione autori: INFM and Department of Physics, University of Trento, I-38050, Povo, Trento, Italy; Van der Waals-Zeeman Institute, University of Amsterdam, 1018 XE Amsterdam, Netherlands; Dept. of Appl. Phys. MESA Res. Inst., University of Twente, Enschede, Netherlands; INFM European Lab. Non-Linear Spect., 50019 Sesto-Fiorentino (Florence), Italy

Abstract: The propagation of light in nonperiodic quasicrystals is studied by ultrashort pulse interferometry. Samples consist of multilayer dielectric structures of the Fibonacci type and are realized from porous silicon. We observe mode beating and strong pulse stretching in the light transport through these systems, and a strongly suppressed group velocity for frequencies close to a Fibonacci band gap. A theoretical description based on transfer matrix theory allows us to interpret the results in terms of Fibonacci band-edge resonances.

Giornale/Rivista: PHYSICAL REVIEW LETTERS

Volume: 90 (5)      Da Pagina: 55501-1  A: 55501-4

Parole chiavi: Band structure; Dielectric materials; Electric field effects; Electron transport properties; Electronic density of states; Interferometry; Laser pulses; Light propagation; Multilayers; Numerical methods; Porous silicon; Ultrashort pulses, Fibonacci band edge resonators; Fibonacci quasicrystals; Multilayer dielectric structure; Ultrashort pulse interferometry; Quasicrystals
DOI: 10.1103/PhysRevLett.90.055501

Citazioni: 234
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18
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