Laser shield and method of making same

Details Laser shield and method of making same Laser shield and method of making same

1985-03-11

1987-04-14

Corbin, John K.

Compositions

Radioactive compositions

Nuclear reactor fuel

252582, G02B 522

Patent

active

046573453

ABSTRACT:
A laser shield which absorbs narrow band radiation of a laser beam while transmitting broad band radiation encompassing the narrow band is provided by diffusing a layer of a chromophore selected from one or more porphyrin complexes which have been modified by metals forming a metallo-porphyrin complex. The chromophore or chromophores are combined with a solvent which are mixed for dissolving the chromophores in the solvent to provide a dissolved chromophore solution. A transparent matrix material is dipped or otherwise brought into contact with the solution for a predetermined time period at a predetermined temperature for diffusing the chromophore into the surface of the matrix material which has been softened by the solvent at the elevated temperature to thereby provide a layer of diffused chromophore which absorbs radiation in a narrow band corresponding to the characteristics of the chromophore while passing a substantial portion of all radiation applied thereto. The strain introduced into the softened surface is then removed by a heat annealing process which also increases the effective concentration of the chromophore by increasing its solubility in the matrix.

REFERENCES:
patent: 2793964 (1957-05-01), Gilbert et al.
patent: 3454715 (1969-07-01), Larach et al.
patent: 3675990 (1972-07-01), Kogelnik et al.
patent: 3687863 (1972-08-01), Wacher
patent: 4114985 (1978-09-01), Friedman
patent: 4268413 (1981-05-01), Dabisch
patent: 4396643 (1983-08-01), Kuehn et al.

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