Multilayer Photonic Crystal for Spectral Narrowing of Emission

  • Zhanfang LIU Institute of Forensic Science, Ministry of Public Security, Beijin
  • Dan WANG Key Laboratory of Bio-Inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
  • Jiao FENG Key Laboratory of Bio-Inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
  • Hong ZHOU Institute of Forensic Science, Ministry of Public Security, Beijin
  • Guannan ZHANG Institute of Forensic Science, Ministry of Public Security, Beijin
  • Zhenwen SUN Institute of Forensic Science, Ministry of Public Security, Beijin
  • Jun ZHU Institute of Forensic Science, Ministry of Public Security, Beijin
  • Kai SONG Key Laboratory of Bio-Inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences
Keywords: photonic crystal, stop band, passband, spectral narrowing, emission spectrum

Abstract

Multilayer colloidal crystal has been prepared by the layer-by-layer deposition of silica microspheres on a glass slide. Each layer is a slab consisting of a fcc close-packed colloidal arrays. By properly choosing the sizes of spheres, the whole spectral feature of multilayer colloidal crystal can be tuned. Here, we engineered a multilayer superlattice structure with an effective passband between two stop bands. This gives a strong narrowing effect on emission spectrum. With the stop bands at the shortwave and longwave edges of emission spectrum, the passband in the central wavelength region can be regarded as a strong decrease of suppression effect and enhancement of a narrow wavelength region of emission. The spectral narrowing modification effect of suitably engineered colloidal crystals shows up their importance in potential application as optical filters and lasing devices.

DOI: http://dx.doi.org/10.5755/j01.ms.23.3.16320

Published
2017-04-21
Section
ELECTRONIC AND OPTICAL MATERIALS