Lasing from Narrow Bandwidth Light-Emitting One-Dimensional Nanoporous Photonic Crystals

Satyathiran Gunenthiran, Juan Wang, Wanxia Zhao, Cheryl Suwen Law, Siew Yee Lim, Jamie A. McInnes, Heike Ebendorff-Heidepriem, Andrew D. Abell, Zeyad T. Alwahabi, Abel Santos*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Nanoporous anodic alumina (NAA) is an emerging platform material for photonics and light-based applications. However, demonstrations of narrow bandwidth lasing emissions from this optical material remain limited. Here, we demonstrate that narrow bandwidth NAA-based gradient-index filters (NAA-GIFs) can be optically engineered to achieve high-quality visible lasing. NAA-GIFs fabricated by a modified sinusoidal pulse anodization approach feature a well-resolved, intense, high-quality photonic stopband (PSB). The inner surface of NAA-GIFs is functionalized with rhodamine B (RhoB) fluorophore molecules through micellar solubilization of sodium dodecyl sulfate (SDS) surfactant. Systematic variation of the ratio of SDS and RhoB enables the precise engineering of the light-emitting functional layer to maximize light-driven lasing associated with the slow photon effect at the red edge of NAA-GIFs' PSB. It is found that the optimal surfactant-To-fluorophore ratio, namely, 20 mM SDS to 0.81 mM RhoB, results in a strong, polarized lasing at â 612 nm. This lasing was characterized by a remarkably high-quality-gain product of â 536, a Purcell factor of 2.2, a lasing threshold of â 0.15 mJ per pulse, and a high-quality polarization ratio of â 0.7. Our results benefit the advancement of the NAA-based lasing technology for a variety of photonic disciplines such as sensing, tweezing, light harvesting, and photodetection.

Original languageEnglish (US)
Pages (from-to)1226-1239
Number of pages14
Issue number4
StatePublished - Apr 20 2022


  • fluorophore functionalization
  • laser emission
  • nanoporous photonic crystals
  • photonic engineering

ASJC Scopus subject areas

  • Biotechnology
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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