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Statements

Subject Item
n2:RIV%2F67985882%3A_____%2F13%3A00396857%21RIV14-GA0-67985882
rdf:type
skos:Concept n20:Vysledek
dcterms:description
In this paper we present fabrication and characterization of the laboratory-designed Bragg fiber. The fiber consisted of a silica core with the diameter of 26 μm surrounded by 3 pairs of circular Bragg layers with a refractive index contrast up to 0.033. Spectral attenuation was measured using a halogen lamp source and the cut-back method resulting in the attenuation coefficient of 0.175 dB/m at 1064 nm. Experiments on high power laser radiation delivery were performed using a laboratory-designed passively mode-locked Nd:YAG laser system generating pulses with the duration of 20 ps and energy of 15 μJ at the wavelength of 1064 nm. The attenuation coefficient measurements resulted in a value of 0.168 0.005 dB/m. The delivered beam spatial profile was detected in the far-field zone in the distance of 1 cm from the fiber output face. The beam had a circular symmetry with almost Gaussian intensity profile. Bending losses were measured on 1-m long fiber segments using mandrels with different diameters. The bending losses were equal to zero at mandrel diameters greater than 50 mm. Decreasing the mandrel diameter, the bending losses were slightly increasing to a value of 3.6 dB/turn at the mandrel diameter of 8 mm. Stimulated Raman scattering in the fiber was also investigated. The Raman threshold intensity in the fiber core for a 1-m long fiber segment was 113 GWcm2. In a 48-m long fiber, generation up to the 3rd Stokes component was observed together with the spectral broadening up to 1650 nm In this paper we present fabrication and characterization of the laboratory-designed Bragg fiber. The fiber consisted of a silica core with the diameter of 26 μm surrounded by 3 pairs of circular Bragg layers with a refractive index contrast up to 0.033. Spectral attenuation was measured using a halogen lamp source and the cut-back method resulting in the attenuation coefficient of 0.175 dB/m at 1064 nm. Experiments on high power laser radiation delivery were performed using a laboratory-designed passively mode-locked Nd:YAG laser system generating pulses with the duration of 20 ps and energy of 15 μJ at the wavelength of 1064 nm. The attenuation coefficient measurements resulted in a value of 0.168 0.005 dB/m. The delivered beam spatial profile was detected in the far-field zone in the distance of 1 cm from the fiber output face. The beam had a circular symmetry with almost Gaussian intensity profile. Bending losses were measured on 1-m long fiber segments using mandrels with different diameters. The bending losses were equal to zero at mandrel diameters greater than 50 mm. Decreasing the mandrel diameter, the bending losses were slightly increasing to a value of 3.6 dB/turn at the mandrel diameter of 8 mm. Stimulated Raman scattering in the fiber was also investigated. The Raman threshold intensity in the fiber core for a 1-m long fiber segment was 113 GWcm2. In a 48-m long fiber, generation up to the 3rd Stokes component was observed together with the spectral broadening up to 1650 nm
dcterms:title
Experimental investigation of high power picosecond 1.06μm pulse propagation in Bragg fibers Experimental investigation of high power picosecond 1.06μm pulse propagation in Bragg fibers
skos:prefLabel
Experimental investigation of high power picosecond 1.06μm pulse propagation in Bragg fibers Experimental investigation of high power picosecond 1.06μm pulse propagation in Bragg fibers
skos:notation
RIV/67985882:_____/13:00396857!RIV14-GA0-67985882
n20:predkladatel
n21:ico%3A67985882
n3:aktivita
n17:P n17:I
n3:aktivity
I, P(GAP102/12/2361)
n3:dodaniDat
n10:2014
n3:domaciTvurceVysledku
n14:3707504 n14:6426603 n14:8241066
n3:druhVysledku
n12:D
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
74061
n3:idVysledku
RIV/67985882:_____/13:00396857
n3:jazykVysledku
n13:eng
n3:klicovaSlova
Silica Bragg fiber; MCVD method; laser power delivery
n3:klicoveSlovo
n5:Silica%20Bragg%20fiber n5:MCVD%20method n5:laser%20power%20delivery
n3:kontrolniKodProRIV
[C6EC88F56AAE]
n3:mistoKonaniAkce
Prague
n3:mistoVydani
BELLINGHAM
n3:nazevZdroje
Nonlinear Optics and Applications VII (Proceedings of SPIE 8772)
n3:obor
n15:JA
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
6
n3:projekt
n16:GAP102%2F12%2F2361
n3:rokUplatneniVysledku
n10:2013
n3:tvurceVysledku
Jelínek, M. Kubeček, V. Jelínková, H. Kašík, Ivan Matějec, Vlastimil Podrazký, Ondřej
n3:typAkce
n4:WRD
n3:wos
000323286600027
n3:zahajeniAkce
2013-04-15+02:00
s:issn
0277-786X
s:numberOfPages
10
n9:doi
10.1117/12.2017214
n8:hasPublisher
SPIE
n22:isbn
978-0-8194-9574-7