Impact of the absorption in transmittance and reflectance on macroporous silicon photonic crystals

Author

Cardador, David ; Vega, Didac ; Rodriguez, Angel

Author_Institution

Dept. d´Eng. Electron., Univ. Politec. de Catalunya (UPC), Barcelona, Spain

fYear

2015

fDate

11-13 Feb. 2015

Firstpage

1

Lastpage

3

Abstract

The characteristics of reflection and transmission peaks in the spectra of photonic crystals have been studied theoretically and the results compared to measurements performed in fabricated samples. The aim of this work is to investigate the relation between material losses and the effective Q factors that can be obtained in photonic crystals made with it. Photonic crystals have been designed with defects of periodicity to introduce states in the band gap that give place to reflectance and transmittance peaks at adjustable specific wavelengths. The fabricated structures are described together with their reflection and transmission spectra. The influence of losses in the material in these spectra is evaluated.

Keywords

Q-factor; elemental semiconductors; energy gap; infrared spectra; photonic crystals; porous semiconductors; reflectivity; silicon; visible spectra; Q factors; Si; band gap; macroporous silicon photonic crystals; material losses; reflectance spectra; transmittance spectra; Absorption; Fabrication; Optical losses; Photonic crystals; Q-factor; Reflection; Silicon; Q factor; absorption; electrochemical etching; extinction coefficient; macroporous silicon; photonic crystal;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices (CDE), 2015 10th Spanish Conference on

Conference_Location

Madrid

Type

conf

DOI

10.1109/CDE.2015.7087479

Filename

7087479