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Title: Erbium-doped slot waveguides containing size-controlled silicon nanocrystals

Silicon based slot waveguides with a slot containing Si nanocrystals (Si-nc) and Erbium ions (Er{sup 3+}) inside a silica matrix were prepared using sputter deposition and low-energy ion implantation. This sequence enabled independent optimization of nanocrystal formation and Er{sup 3+} incorporation parameters. Using a superlattice approach, the size of the Si-nc inside the slot could be controlled and optimized for maximum Er{sup 3+} luminescence yield at 1.54 μm. Er{sup 3+} is found to be efficiently pumped by Si-nc of sizes around 3 to 4 nm. Increasing Er{sup 3+} photoluminescence at 1.54 μm with increasing post-implantation annealing temperatures up to 1000 °C is attributed to annealing of matrix or Si-nc interface defects mainly. Additionally, a dependence of the Er{sup 3+} luminescence intensity on both the excitation and emission linear polarization orientation is shown, which demonstrates efficient field enhancement in sputtered slot waveguide structures.
Authors:
; ;  [1] ; ;  [2] ; ;  [3]
  1. Institute of Applied Physics, TU Bergakademie Freiberg, D-09596 Freiberg (Germany)
  2. Institute of Materials Science, TU Bergakademie Freiberg, D-09596 Freiberg (Germany)
  3. Centre for Quantum Computation and Communication Technology, School of Physics, University of Melbourne, Melbourne, Victoria 3010 (Australia)
Publication Date:
OSTI Identifier:
22402905
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 16; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANNEALING; DEPOSITION; DOPED MATERIALS; ERBIUM; ERBIUM IONS; EXCITATION; INTERFACES; ION IMPLANTATION; MATRIX MATERIALS; NANOSTRUCTURES; PHOTOLUMINESCENCE; POLARIZATION; SILICA; SILICON; SPUTTERING; SUPERLATTICES; WAVEGUIDES