Upconversion in rare-earth-doped fluoride glasses
1997 ◽
Vol 15
(8)
◽
pp. 1357-1362
◽
1981 ◽
Vol 75
(7)
◽
pp. 3522-3541
◽
1999 ◽
Vol 253
(1-3)
◽
pp. 50-57
◽
1996 ◽
Vol 100
(9)
◽
pp. 1642-1645
◽
1987 ◽
Vol 19-20
◽
pp. 557-566
◽
Keyword(s):
Keyword(s):
1991 ◽
Vol 67-68
◽
pp. 477-482
◽
Keyword(s):