Sol–gel-derived planar waveguides of Er3+:Yb3Al5O12 prepared by a polyvinylpyrrolidone-based method
Erbium (Er 3+ )-doped ytterbium garnet [(Er x Yb 1- x ) 3 Al 5 O 12 ; x = 0.005, 0.02 and 0.1, YbAG] planar waveguides have been prepared by an aqueous sol–gel method using polyvinylpyrrolidone as a gelling agent. The thermal behavior of gel was studied by thermogravimetry and differential thermal...
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Veröffentlicht in: | Journal of sol-gel science and technology 2016-11, Vol.80 (2), p.531-537 |
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Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
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Zusammenfassung: | Erbium (Er
3+
)-doped ytterbium garnet [(Er
x
Yb
1-
x
)
3
Al
5
O
12
;
x
= 0.005, 0.02 and 0.1, YbAG] planar waveguides have been prepared by an aqueous sol–gel method using polyvinylpyrrolidone as a gelling agent. The thermal behavior of gel was studied by thermogravimetry and differential thermal analysis. The phase composition of the films was determined using X-ray diffraction. Surface analysis was carried out by atomic force microscopy. A pure infrared emission of Er
3+
ions was observed in all prepared films. Light propagation was studied by m-line spectroscopy using several wavelengths (633, 964, 1311 and 1552 nm). The minimum coating cycles to observe one propagated mode at 1552 nm were determined to be 7. The sol–gel-derived Er:Yb
3
Al
5
O
12
seems to be a promising material for light amplifiers in the IR region.
Graphical Abstract |
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ISSN: | 0928-0707 1573-4846 |
DOI: | 10.1007/s10971-016-4098-9 |