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Title: Single-crystal silicon optical fiber by direct laser crystallization

Journal Article · · ACS Photonics
ORCiD logo [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Pennsylvania State Univ., University Park, PA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
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Semiconductor core optical fibers with a silica cladding are of great interest in nonlinear photonics and optoelectronics applications. Laser crystallization has been recently demonstrated for crystallizing amorphous silicon fibers into crystalline form. Here we explore the underlying mechanism by which long single-crystal silicon fibers, which are novel platforms for silicon photonics, can be achieved by this process. Using finite element modeling, we construct a laser processing diagram that reveals a parameter space within which single crystals can be grown. Utilizing this diagram, we illustrate the creation of single-crystal silicon core fibers by laser crystallizing amorphous silicon deposited inside silica capillary fibers by high-pressure chemical vapor deposition. The single-crystal fibers, up to 5.1 mm long, have a very welldefined core/cladding interface and a chemically pure silicon core that leads to very low optical losses down to ~0.47-1dB/cm at the standard telecommunication wavelength (1550 nm). Furthermore, tt also exhibits a photosensitivity that is comparable to bulk silicon. Creating such laser processing diagrams can provide a general framework for developing single-crystal fibers in other materials of technological importance.

Research Organization:
Pennsylvania State Univ., University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; DMR 1107894; DMR 1420620
OSTI ID:
1334517
Journal Information:
ACS Photonics, Vol. 4, Issue 1; ISSN 2330-4022
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

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Cited By (4)

Recent Progress and Perspectives of Thermally Drawn Multimaterial Fiber Electronics journal October 2019
Laser restructuring and photoluminescence of glass-clad GaSb/Si-core optical fibres journal April 2019
Advanced Multimaterial Electronic and Optoelectronic Fibers and Textiles journal September 2018
Laser-Induced In-Fiber Fluid Dynamical Instabilities for Precise and Scalable Fabrication of Spherical Particles journal October 2017

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
optical fiber
silicon photonics
chemical vapor deposition
laser crystallization
crystal growth
optoelectronics