"2015-04-23+02:00"^^ . . . . . . . . "http://www.isvav.cz/projectDetail.do?rowId=GAP102/12/2361"^^ . "2014-04-18+02:00"^^ . "10"^^ . "Projekt se zam\u011B\u0159uje na p\u0159\u00EDpravu a charakterizaci Braggovsk\u00FDch vl\u00E1ken s dut\u00FDm j\u00E1drem pro p\u0159enos vysok\u00FDch energi\u00ED laserov\u00E9ho z\u00E1\u0159en\u00ED ve spektr\u00E1ln\u00ED oblasti kolem 1060 nm a pro generaci a p\u0159enos laserov\u00E9ho z\u00E1\u0159en\u00ED v oblasti kolem 1550 nm. Vl\u00E1kna pro oblast 1550 nm budou vzu\u017E\u00EDvat dopov\u00E1n\u00ED optick\u00E9ho obalu vl\u00E1kna ionty yterbia a erbia. Yterbium bude slou\u017Eit jako sensitis\u00E9r pro \u010Derp\u00E1n\u00ED Er iont\u016F. \u010Cerpac\u00ED sign\u00E1l v j\u00E1d\u0159e je p\u0159en\u00E1\u0161en v d\u016Fsledku fotonick\u00E9ho zak\u00E1zan\u00E9ho p\u00E1su p\u0159i 1060 nm, zat\u00EDmco emitovan\u00E9 z\u00E1\u0159en\u00ED p\u0159i 1550 nm bude p\u0159en\u00E1\u0161eno v d\u016Fsledku optick\u00E9ho zisku. Vl\u00E1kna budou v projektu p\u0159ipravov\u00E1na nanesen\u00EDm p\u00E1r\u016F vysoko a n\u00EDzkoindexov\u00E9 vrstev s pou\u017Eit\u00EDm MCVD nebo sol-gel metody vypracovan\u00FDch v projektu. Pro vysoce dopovan\u00E9 vrstvy bude pou\u017Eito dopov\u00E1n\u00ED oxidem germani\u010Dit\u00FDm, nano\u010D\u00E1sticemi oxidu titani\u010Dit\u00E9ho, st\u0159\u00EDbra, oxidu hlinit\u00E9ho, erbia a yterbia. P\u0159ipraven\u00E9 vrstvy budou testov\u00E1ny v kontinu\u00E1ln\u00EDm nebo pulsn\u00EDm re\u017Eimu v oblasti 1060 nm pro p\u0159enos energie pevnol\u00E1tkov\u00FDch laser\u016F." . . "10"^^ . "Braggovsk\u00E1 vl\u00E1kna pro p\u0159enos vysok\u00FDch energi\u00ED laser\u016F" . "2015-12-31+01:00"^^ . . . . . "GAP102/12/2361" . . "2012-01-01+01:00"^^ . "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 high-index layers. The prepared fibers will be tested by solid state lasers working at 1060 nm spectral range in the continuous and pulse regimes."@en . "0"^^ . . . . . "1"^^ . "Bragg fibers for delivery of high laser powers"@en . . "optical fiber bragg reflection photonic crystal energy transfer laser"@en . . "1"^^ .