PROJECT DETAILS
Name: Bragg fibers for delivery of high laser powers
Sponsor: Czech Science Foundation
Principal investigator: Vlastimil Matějec, Ph.D.
Member: Jan Aubrecht, MSc.; Ivo Bartoň, MSc.; Ivan Kašík, Ph.D.; Jan Mrázek, Ph.D.; Ondřej Podrazký, Ph.D.
From: 2012-01-01
To: 2015-12-31
The project focuses on preparation and characterization of hollow-core Bragg optical fibers for delivery of high power laser radiation at spectral region around 1060 nm and for generation and delivery of laser radiation around 1550 nm. The latter fibers will be based on doping the fiber cladding with erbium and ytterbium ions. Ytterbium ions serve as a sensitiser at pumping Er ions. The pump in the fiber is transmitted due to the photonic band gap effect at 1060 nm and emitted laight at 1550 nm due to gain-guiding. The hollow-core Bragg fibers will be prepared by the application of pairs of low- and high-index layers using the MCVD or sol-gel method developed in the project. Doping with germanium dioxide, titanium, silver, aluminum oxide, erbium and ytterbium nanoparticles will be investigated for the preparation of the highindex layers. The prepared fibers will be tested by solid state lasers working at 1060 nm spectral range in the continuous and pulse regimes.