Structural and optical properties in Tm
3+
/Tm
3+
‐Yb
3+
doped NaLuF
4
glass‐ceramics
2005 ◽
Vol 351
(27-29)
◽
pp. 2304-2309
◽
2009 ◽
Vol 21
(15)
◽
pp. 155103
2014 ◽
Vol 386
◽
pp. 100-104
◽
2011 ◽
Vol 357
(3)
◽
pp. 858-863
◽