Low-threshold and broadly tunable lasers of Yb3+-doped yttrium lanthanum oxide ceramic

2008 ◽  
Vol 92 (21) ◽  
pp. 211106 ◽  
Author(s):  
Qiang Hao ◽  
Wenxue Li ◽  
Heping Zeng ◽  
Qiuhong Yang ◽  
Chuanguo Dou ◽  
...  
2009 ◽  
Vol 6 (8) ◽  
pp. 559-562 ◽  
Author(s):  
W. Li ◽  
Q. Hao ◽  
Q. Yang ◽  
H. Zeng

2007 ◽  
Vol 56 (4) ◽  
pp. 2207
Author(s):  
Ding Jun ◽  
Yang Qiu-Hong ◽  
Tang Zai-Feng ◽  
Xu Jun ◽  
Su Liang-Bi

Laser Physics ◽  
2011 ◽  
Vol 22 (1) ◽  
pp. 129-132 ◽  
Author(s):  
Z. L. Wang ◽  
Z. Y. Wei ◽  
Q. Wang ◽  
D. H. Li ◽  
Z. G. Zhang ◽  
...  

2014 ◽  
Author(s):  
Chris H. J. Hartgerink
Keyword(s):  

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
S Mittler ◽  
MH Müller ◽  
MS Kasparek ◽  
O Kelber ◽  
D Weiser ◽  
...  
Keyword(s):  

2011 ◽  
Vol 4 (1) ◽  
pp. 93-109 ◽  
Author(s):  
Anne Reinertsen

This is about the pedagogical experience ahead of or beyond any pedagogical activity or action. It is therefore about perfectibility and/or dealing with something both theoretically and existentially. It is about inclusion and dialogue, but in an indirect manner, and school as a low threshold institution: heterogeneity, pluralism and multiculturalism as the primary characteristics of a modern school in a modern society. This makes school an institution important to life and knowledge. The need for a pedagogy created through a strong scientific orientation through practice or as I prefer; realism, urgent: Pedagogy framed by a good, relevant and strong understanding of context. This makes demands on teachers' competence. It demands more than possessing pedagogical scientific competence. A certain extent of double(d) competence and more is demanded both about what happens in science and about what happens in society and openness always through language and critical thinking or philosophy. This is about becoming teacher in/and for the fractured future and about what we might “give” (student) teachers in addition.


1993 ◽  
Vol 329 ◽  
Author(s):  
Michael Canva ◽  
Patrick Georges ◽  
Jean-Fran^ois Perelgritz ◽  
Alain Brun ◽  
Fréddric Chaput ◽  
...  

AbstractPhotoresistant laser dyes were trapped in silica based xerogel host matrices to obtain solid state tunable lasers. For this purpose very dense xerogel samples with improved chemical and physical properties were prepared at room temperature by the sol-gel technology. The as-prepared materials were polished to obtain optical quality surfaces and were used as new lasing media.Lasing action of such different dyes as rhodamine, perylene and pyrromethene doping dense sol-gel matrices was demonstrated. Efficiencies of 30 % or lifetimes of more than 100,000 shots were achieved with different new ≤dye dopant/host matrix≥ couples. Their different performances are reviewed and discussed.


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