Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Cz. Koepke"'
Publikováno v:
Journal of Luminescence. 204:278-283
Recently developed SICLOF oxyfluoride glass and glass-ceramic fibers doped with Er3+/Yb3+ have been prepared for fiber applications and optically characterized. The luminescence efficiency of glass-ceramic fiber appeared to be two times higher than t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf9d62c2d69740a5493b296413b845bc
https://doi.org/10.1016/j.jlumin.2018.08.035
https://doi.org/10.1016/j.jlumin.2018.08.035
Publikováno v:
Optical Materials. 38:24-27
The excited state characteristics by means of the excited state absorption (ESA), optical gain and bleaching spectra have been measured for prototype glasses with Li 2 B 4 O 7 (LBO) and KLiB 4 O 7 (KLBO) compositions activated by Cr 3+ ions. The work
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42125042a9e2f199c36d362c42d17a6b
https://doi.org/10.1016/j.optmat.2014.09.024
https://doi.org/10.1016/j.optmat.2014.09.024
Publikováno v:
Physics Procedia. 2:365-372
We present the excited state absorption (ESA) spectroscopy of ZBLAN:Er 3+ glass. The experimental spectra were measured in broad spectral range (500–1800 nm) by the CW pump-probe technique. Judd–Ofelt (JO) approach was employed to interpret the r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cce6451331446f49601b4eb6868bf2cc
https://doi.org/10.1016/j.phpro.2009.07.021
https://doi.org/10.1016/j.phpro.2009.07.021
Publikováno v:
Journal of Non-Crystalline Solids. 355:1338-1341
3CaO–Ga 2 O 3 –3GeO 2 glass excited state absorption spectra-activated with Ho 3+ (Ho 2 O 3 – 0.7 wt% content) have been measured and analysed. Up-converted emission channels have been identified and the predicted up-converted emission bands ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf9af84d6c42eb178070fac7bd7b8455
https://doi.org/10.1016/j.jnoncrysol.2009.05.022
https://doi.org/10.1016/j.jnoncrysol.2009.05.022
Publikováno v:
Optical Materials. 31:537-540
The broadband optical gain peaking around 1100 nm has been registered in the ZAS glass activated by Cr3+ ions. The gain spectrum spreads over ∼300 nm range and on the short wavelength side it is accompanied by the excited state absorption (ESA) of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3439b9580661ca9d56d4fbc1aff2f7d7
https://doi.org/10.1016/j.optmat.2007.09.016
https://doi.org/10.1016/j.optmat.2007.09.016
Publikováno v:
Optical Materials. 31:548-553
In order to obtain new kind of glass ceramics (with improved mechanical strength, thermal and chemical resistance), oxyfluoride borosilicate (Si02-B203-Na20-LaF3) glass, containing Pr 3+ ions (0.82-0.41 wt% Pr 2 O 3 ), has been melted and then expose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d780d3886be96b811022407f63974408
https://doi.org/10.1016/j.optmat.2007.10.022
https://doi.org/10.1016/j.optmat.2007.10.022
Autor:
Cz. Koepke
Publikováno v:
Optical Materials. 30:674-679
Examples of the excited state absorption (ESA) spectra measurements along with interpretations are presented and concerned as a tool which can provide answers to questions arising from other spectroscopic data. Author presents several cases where the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9d6127fa56981024d163372c4f9dee5
https://doi.org/10.1016/j.optmat.2007.02.006
https://doi.org/10.1016/j.optmat.2007.02.006
Publikováno v:
Optical Materials. 28:137-142
We present the arguments for existence of the Pr 3+ -trapped exciton system in the LiNbO 3 :Pr 3+ crystal which is responsible for the non-radiative processes quenching the radiative emission from the 3 P 0 state. We report on the LiNbO 3 :Pr 3+ abso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65fb24c16908c6092dd4f49df4db8da6
https://doi.org/10.1016/j.optmat.2004.10.035
https://doi.org/10.1016/j.optmat.2004.10.035
Publikováno v:
Optical Materials. 28:129-136
We report on the upconverted luminescence in neodymium-activated fluoroaluminate glass obtained with 800 nm diode laser excitation. Several anti-Stokes emissions: at 588, 607, 720 and 750 nm are observed and appropriate transitions are assigned. For
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89bb732e6cce708599116e93d1f8a066
https://doi.org/10.1016/j.optmat.2004.10.034
https://doi.org/10.1016/j.optmat.2004.10.034
Publikováno v:
Journal of Luminescence. 116:94-100
We demonstrate how the existence of the oxygen-affected sites in the glass matrix of the Pr3+—activated fluoroaluminate glass reflects the unusual decay time dependence on the emission wavelength. The previously proposed model of the “defect stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b68abd3e5a3900500fd671f17a92fade
https://doi.org/10.1016/j.jlumin.2005.03.008
https://doi.org/10.1016/j.jlumin.2005.03.008