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US 7,359,415 B1Granted
Cr4+-doped mixed alloy laser materials and lasers and methods using the materials
AssigneeResearch Foundation of the City University of New York
InventorsRobert R. Alfano, Vladimir Petricevic, Alexey Bykov
Life of this patent
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Abstract
A laser medium includes a single crystal of Cr4+:Mg2-xMxSi1-yAyO4, where, where M is a bivalent ion having an ionic radius larger than Mg2+, and A is a tetravalent ion having an ionic radius larger than Si4+. In addition, either a) 0≦x<2 and 0<y<1 or b) 0<x<2 and y is 0 or 1 with the proviso that if M is Ca2+ and x=1 then y is not 0. The laser medium can be used in a laser device, such as a tunable near infrared (NIR) laser.
Claims22
A laser medium, comprising:
- a single crystal of Cr4+:Mg2-xMxSi1-yAyO4, wherein
- M is a bivalent ion having an ionic radius larger than Mg2+,
- A is a tetravalent ion having an ionic radius larger than Si4+;
- and
- either
- a) 0≦x<2 and 0<y<1;
- or
- b) 0<x<2 and y is 0 or 1 with the proviso that if M is Ca2+ and x=1 then y is not 0.
5 more elements
A laser comprising:
- a laser medium comprising a single crystal of Cr4+:Mg2-xMxSi1-yAyO4, wherein
- M is a bivalent ion having an ionic radius larger than Mg2+,
- A is a tetravalent ion having an ionic radius larger than Si4+;
- and
- either
- a) 0≦x<2 and 0<y<1;
- or
- b) 0<x<2 and y is 0 or 1 with the proviso that if M is Ca2+ and x=1 then y is not 0.
5 more elements
A method of making a laser medium, the method comprising:
- forming a solution comprising at least one substituent for forming the laser medium disposed in a solvent, wherein the at least one substituent is a metal oxide;
- and
- forming at least one crystal of Cr4+:Mg2-xMxSi1-yAyO4 from the solution, wherein M is a bivalent ion having an ionic radius larger than Mg2+, A is a tetravalent ion having an ionic radius larger than Si4+;
- and either a) 0≦x<2 and 0<y<1;
- or b) 0<x<2 and y is 0 or 1 with the proviso that if M is Ca2+ and x=1 then y is not 0.
2 more elements
Dependencies are inferred from the claim text.