Fluorescence of Cr3+ doped alumina optical waveguides prepared by pulsed laser deposition and sol–gel method

2000 ◽  
Vol 87-89 ◽  
pp. 1087-1089 ◽  
Author(s):  
A Pillonnet ◽  
C Garapon ◽  
C Champeaux ◽  
C Bovier ◽  
H Jaffrezic ◽  
...  
2020 ◽  
Vol 384 (11) ◽  
pp. 126232
Author(s):  
Peng Shi ◽  
Yan Yang ◽  
Huisen Li ◽  
Zhiqiu Zou ◽  
Benpeng Zhu ◽  
...  

2001 ◽  
Vol 667 ◽  
Author(s):  
Anne Minardi ◽  
Claudine Garapon ◽  
Jacques Mugnier ◽  
Corinne Champeaux

ABSTRACTEuropium doped alumina Al2O3optical waveguides were prepared by pulsed laser deposition (PLD) using a KrF laser. The targets were obtained by sintering doped powders synthesized by a sol-gel method. Depending on the oxygen pressure used during the deposition, Eu3+ (for 0.1 mbar) or Eu2+ (for 10−5 mbar) are obtained in the films. Two kinds of Eu2+ ions are present, with a 4f-5d broad excitation band peaking at 330 nm and emission bands located at 490 nm or 585 nm respectively. For Eu3+ doped films, the usual 5D0 to the 7FJ multiplets emission spectra were observed. The emission lines are strongly inhomogeneously broadened. Low temperature site selective fluorescence measurements were achieved in order to correlate the different Eu3+ sites observed with the structure of the films (amorphous or γ crystallized).


2010 ◽  
Vol 1256 ◽  
Author(s):  
John E Mathis ◽  
Gyula Eres ◽  
Claudia Cantoni ◽  
Kyunghoon Kim ◽  
Hans Christen

AbstractNanorods composed of complex oxides have been synthesized using hydrothermal and sol-gel methods, but pulsed-laser deposition (PLD) provides precise, layer-by-layer control of growth, and is the method of choice for synthesizing complex structures. However, producing complex-oxide nanorods by PLD has proved elusive.Here we report on our efforts to produce nanorods composed of the best-understood complex oxide, strontium titanate (STO). The results suggest it is indeed possible to produce STO nanorods via PLD by using a template of MgO nanorods.


2001 ◽  
Vol 78 (9) ◽  
pp. 1204-1206 ◽  
Author(s):  
G. Balestrino ◽  
S. Martellucci ◽  
P. G. Medaglia ◽  
A. Paoletti ◽  
G. Petrocelli ◽  
...  

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