Birefringence in optical waveguides made by silicon nanocrystal superlattices
Anno: 2004
Autori: Riboli F., Navarro-Urrios D., Chiasera A., Daldosso N., Pavesi L., Oton C.J., Heitmann J., Yi L.X., Scholz R., Zacharias M.
Affiliazione autori: Univ Trent, Dipartimento Fis, I-38050 Trento, Italy; Univ La Laguna, Dept Fis Basica, San Cristobal la Laguna 38204, Spain; Max Planck Inst Microstruct Phys, D-06120 Halle An Der Saale, Germany.
Abstract: We investigate the optical properties of planar waveguides where the core layer is formed by a silicon nanocrystals (Si-nc)/SiO2 superlattice. M-line measurements of the different waveguides yield the mode indices, which can be modeled by assuming anisotropic optical properties of the core layer. This anisotropy is related to the superlattice, i.e., it is a form birefringence. By modeling the m-line measurements with the structural data obtained by transmission electron microscopy analysis, we determine for each waveguide the value of the form birefringence, an upper limit of the nanocrystals size and their refractive index. Values of the form birefringence as high as 1% have been found. (C) 2004 American Institute of Physics.
Giornale/Rivista: APPLIED PHYSICS LETTERS
Volume: 85 (7) Da Pagina: 1268 A: 1270
Parole chiavi: Quantum-well; FilmsDOI: 10.1063/1.1779969Citazioni: 10dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-06-29Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
