Abstract Glass for laser use, comprising the oxides of the following elements having the following mol percentage composition: ______________________________________ phosphorus pentoxide 35-49;
oxides of one or more alkali metals
1-30;
oxides of one or more metals of group II
20-45;
oxides of one or more rare-earth elements
0.1-25;
oxides of one or more of B, Al, Nb, Pb
0-27;
______________________________________ Wherein the ratio of the sum total of the oxides of mono-, bi- and trivalent metals to the phosphorus pentoxide exceeds unity.
A glass for laser use having the following mol percentage composition: phosphorus pentoxide -- 35-49; oxides of one or more alkali metals -- 1-30; oxides of one or more metals of group II -- 20-45; neodymium oxide -- 0.1-25; oxides of elements selected from the group consisting of B, Al, Nb and Pb -- 0-27; the ratio of the sum total of the oxides of mono-, bi- and trivalent metals to the phosphorus pentoxide being in excess of unity, said glass having a thermal refractive index coefficient of (-30 to + 20) . 10.sup. -7 deg.sup. -1 and a cross-sectional area of stimulated radiation of
Claim 2
Dependent Claim
105 words
A glass for laser use having the following mol percentage composition: phosphorus pentoxide -- 35-49; oxides of one or more alkali metals -- 1-30; oxides of one or more metals of group II -- 20-45; neodymium oxide -- 0.1-25; oxides of elements selected from the group consisting of B, Al, Nb and Pb -- 0-27; the ratio of the sum total of the oxides of mono-, bi- and trivalent metals to the phosphorus pentoxide being in excess of unity, said glass having a thermal refractive index coefficient of (-30 to + 20) . 10.sup. -7 deg.sup. -1 and a cross-sectional area of stimulated radiation of
Claim 3
Dependent Claim
29 words
A glass as claimed in claim 1, also doped with the oxides of metals selected from the group consisting of ZrO 2 and Cr 2 O 3 in an
Claim 4
Dependent Claim
32 words
A glass as claimed in claim 1, comprising the following components (in mol percent): ______________________________________
P.sub.2 O.sub.5
38-49
BaO 10-30
CdO 5-35
K.sub.2 O
5-25
Al.sub.2 O.sub.3
1-10
Nd.sub.2 O.sub.3
0.5-5.
______________________________________
Claim 5
Dependent Claim
32 words
A glass as claimed in claim 1, comprising the following components (in mol percent): ______________________________________
P.sub.2 O.sub.5
39-49
BaO 5-35
ZnO 10-30
B.sub.2 O.sub.3
0-10
Nd.sub.2 O.sub.3
0.5-6
Na.sub.2 O
1-5.
______________________________________
Claim 6
Dependent Claim
14 words
A glass according to claim 1 which has said area in the range of
Claim 7
Dependent Claim
21 words
A glass according to claim 1 which has a thermal expansion coefficient of 120.10.sup. -7 to 170.10.sup. -7 deg.sup. -1 .