Tetravalent chromium (Cr.sub.4+) as a laser-active ion for tunab

Details Tetravalent chromium (Cr.sub.4+) as a laser-active ion for tunab Tetravalent chromium (Cr.sub.4+) as a laser-active ion for tunab

1989-12-14

1991-01-22

Scott, Jr., Leon

Coherent light generators

Particular active media

Insulating crystal

372 39, 25230117, H01S 316

Patent

active

049875752

ABSTRACT:
A laser-medium in the form of a dielectric crystal or glass doped with tetravalent chromium. The dielectric crystals are of olivine-like structure such as germanates of formula (A) (RE)GeO.sub.4 where (A=Na or Li, RE=Y, Lu or Gd), crystals of willemite structure Zn.sub.2 (Si or Ge)O.sub.4 tetrahedral sites, or any other single-crystal or polycrystalline compound containing the (Si.Ge)O.sub.4 tetrahedra in its crystal lattice, such as Ca.sub.3 La.sub.2 (SiO.sub.4).sub.6 and crystals such as YAG (Y.sub.3 Al.sub.5 O.sub.12).

REFERENCES:
patent: 4648094 (1987-03-01), McCallum et al.
patent: 4679198 (1987-07-01), Shone et al.
patent: 4797889 (1989-01-01), Lempicki
patent: 4802180 (1989-01-01), Brandle, Jr. et al.
patent: 4811349 (1989-03-01), Payne et al.
patent: 4841530 (1989-06-01), Chai et al.

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