Affiliation:
1. Indian Institute of Technology Ropar
Abstract
Color centers in nanodiamonds (NDs) have been largely explored by
coupling to a photonic structured matrix (PSM) to amplify visible
range emission features, enhancing their use in quantum technologies.
Here, we study the emission enhancement of dual near-infrared zero
phonon line (ZPL) emission from silicon–boron (SiB) and
silicon-vacancy (SiV−) centers in NDs using a spontaneously
emerged low index-contrast quasiperiodic PSM, having micron-scale air
pores. An intensity enhancement factor of 6.15 for SiV− and
7.8 for SiB ZPLs is attained for the PSM sample compared to a control
sample. We find Purcell enhancement of 2.77 times for the PSM sample
using spatial-dependent decay rate measurements, supported by
localized field intensity confinement in the sample. Such cavity-like
emission enhancement and lifetime reduction are enabled by an in-plane
order–disorder scattering in the PSM sample substantiated by
pump-dependent emission measurements. The results put forward a facile
approach to tailor the near-infrared dual ZPL emission from NDs using
nanophotonic structures.
Funder
Council of Scientific and Industrial
Research, India
Science and Engineering Research
Board
Department of Science and Technology,
Ministry of Science and Technology, India
prime minister's research
fellowship
Subject
Atomic and Molecular Physics, and Optics