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Statements

Subject Item
n2:RIV%2F68407700%3A21340%2F13%3A00207798%21RIV14-MSM-21340___
rdf:type
skos:Concept n6:Vysledek
dcterms:description
Ytterbium doped phosphate glass (5 mol% of Yb2O3, thickness 1 and 2 mm, uncoated), developed for fibre laser, was tested in bulk form as a laser active medium. For Yb:glass pumping a fibre coupled (fibre core diameter 100 μm, NA = 0.22) laser diode with emission at wavelength 975nm was used. The laser diode was operating in pulsed regime (pulse length 1.5 ms, repetition rate 5 Hz, maximum pulse energy 22 mJ) with low duty cycle to reduce a heat accumulation inside the active medium (Yb:glass was only air-cooled). Longitudinally pumped Yb:glass samples were placed inside the 145mm long semi-hemispherical resonator formed by a flat pumping mirror (HR @ 1.0 - 1.1 μm, HT @ 0.97 μm) and by curved output coupler (r = 150 mm). Set of output couplers with reflectivity 91 – 97% @ 1.0 - 1.1 μm was used. Tuning of the Yb:glass laser was accomplished by using a birefringent filter (single 1.5mm thick quartz plate) placed inside the optical resonator at the Brewster angle between the output coupler (reflectivity 97%) and laser active medium. In untuned regime the energy up to 2.4mJ was obtained at wavelength 1050 nm. Slope efficiency up to 17% in respect to absorbed pumping was reached with the 2mm sample. In tuned regime the smooth laser tuning curve, limited by used Lyot filter, extended from 1005nm up to 1080nm (FWHM 48 nm). The maximum output energy of 1.65mJ was obtained at 1060nm for the absorbed energy 16 mJ. Ytterbium doped phosphate glass (5 mol% of Yb2O3, thickness 1 and 2 mm, uncoated), developed for fibre laser, was tested in bulk form as a laser active medium. For Yb:glass pumping a fibre coupled (fibre core diameter 100 μm, NA = 0.22) laser diode with emission at wavelength 975nm was used. The laser diode was operating in pulsed regime (pulse length 1.5 ms, repetition rate 5 Hz, maximum pulse energy 22 mJ) with low duty cycle to reduce a heat accumulation inside the active medium (Yb:glass was only air-cooled). Longitudinally pumped Yb:glass samples were placed inside the 145mm long semi-hemispherical resonator formed by a flat pumping mirror (HR @ 1.0 - 1.1 μm, HT @ 0.97 μm) and by curved output coupler (r = 150 mm). Set of output couplers with reflectivity 91 – 97% @ 1.0 - 1.1 μm was used. Tuning of the Yb:glass laser was accomplished by using a birefringent filter (single 1.5mm thick quartz plate) placed inside the optical resonator at the Brewster angle between the output coupler (reflectivity 97%) and laser active medium. In untuned regime the energy up to 2.4mJ was obtained at wavelength 1050 nm. Slope efficiency up to 17% in respect to absorbed pumping was reached with the 2mm sample. In tuned regime the smooth laser tuning curve, limited by used Lyot filter, extended from 1005nm up to 1080nm (FWHM 48 nm). The maximum output energy of 1.65mJ was obtained at 1060nm for the absorbed energy 16 mJ.
dcterms:title
Tunability of Yb:glass Laser Tunability of Yb:glass Laser
skos:prefLabel
Tunability of Yb:glass Laser Tunability of Yb:glass Laser
skos:notation
RIV/68407700:21340/13:00207798!RIV14-MSM-21340___
n6:predkladatel
n10:orjk%3A21340
n3:aktivita
n16:P n16:I
n3:aktivity
I, P(GAP102/12/0320)
n3:dodaniDat
n14:2014
n3:domaciTvurceVysledku
n15:4494695 n15:1703765 Krivosudský, Ondrej
n3:druhVysledku
n20:D
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
112013
n3:idVysledku
RIV/68407700:21340/13:00207798
n3:jazykVysledku
n17:eng
n3:klicovaSlova
Yb:glass laser; diode pumping; tunable laser
n3:klicoveSlovo
n4:diode%20pumping n4:tunable%20laser n4:Yb%3Aglass%20laser
n3:kontrolniKodProRIV
[94D0C9F57DBD]
n3:mistoKonaniAkce
San Francisco
n3:mistoVydani
Washington
n3:nazevZdroje
Proceedings of SPIE Vol. 8599 - Solid State Lasers XXII: Technology and Devices
n3:obor
n11:JA
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:projekt
n21:GAP102%2F12%2F0320
n3:rokUplatneniVysledku
n14:2013
n3:tvurceVysledku
Jelínková, Helena Krivosudský, Ondrej Šulc, Jan Steplen, R.
n3:typAkce
n18:WRD
n3:wos
000321895100059
n3:zahajeniAkce
2013-02-02+01:00
s:issn
0277-786X
s:numberOfPages
8
n9:doi
10.1117/12.2002041
n13:hasPublisher
SPIE
n19:isbn
978-0-8194-9368-2
n22:organizacniJednotka
21340