C - Chemistry – Metallurgy – 30 – B
Patent
C - Chemistry, Metallurgy
30
B
148/1
C30B 31/22 (2006.01) H01S 3/16 (2006.01)
Patent
CA 1146454
BLOOM, D. M. 1-5 CREATION OF F? COLOR CENTERS Abstract of the Disclosure Production of F? color centers in alkali halide crystals with densities high enough for efficient use in lasers is achieved by a two-step, highly selective photoionization mechanism. This mechanism is coupled with the use of suitable divalent metal ions as efficient and stable electron traps to allow nearly 100 percent conversion of F2 color centers to F? color centers. The two-step photoionization mechanism comprises photo-exciting the F2 color center to the first bound state, which requires lower energy than the corresponding transition for F color centers, then photoionizing the F2 color center from the first bound state, and finally, capturing the electron thus liberated on the divalent metal ions.
327061
Bloom David M.
Mollenauer Linn F.
Kirby Eades Gale Baker
Western Electric Company Incorporated
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