| 摘要 |
PURPOSE:To produce the hole burning crystal with which a stable hole burning is effected even at room temp. and a narrow line width of the hole can be attained by melting and solidifying a mixture of fluoride or oxide of Sm and halides of Ca, Sr, Na, Y and Gd in a non-oxidizing atmosphere. CONSTITUTION:In the production of this hole burning crystal, fluoride or oxide of Sm and halides of Ca, Sr, Na, Re and Re' (wherein each of Re and Re' is Y or Gd) are mixed together in atomic ratios in the product crystal of Sm:Ca: Sr:Na:Re:Re':F:X=p:(1-p-q):(p-q):t:(1-gamma):gamma:(6-v)v, wherein: X is Cl, Br or I; 0.001<=p<=0.5; 0<=q<=0.5; 0<=gamma<=0.5; 0.5<=t<=1, 0<=v<=1. The resulting mixture is melted and solidified at 1000 to 1500 deg.C in a non-oxidizing atmosphere to produce the objective fluorite type crystal which contains Sm<2+> as the guest optically active ion and in which the composition of the host is represented by the formula SmpCa1-p-qSrp+qNatRe1-rRe'rF6-vXv. |
