Producing layered penta-ultraphosphate monocrystals

Details Producing layered penta-ultraphosphate monocrystals Producing layered penta-ultraphosphate monocrystals

1977-08-04

1979-07-24

Bernstein, Hiram H.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

423305, B01J 1706

Patent

active

041621840

ABSTRACT:
Monocrystalline substrates of gadolinium yttrium penta-ultraphosphate are coated with an epitaxial layer of neodymium yttrium penta-ultraphosphate to produce a wave guiding, laser active, solid state devices. The preparation procedure involves heating a solution of neodymium oxide and yttrium oxide in phosphoric acid to about 500.degree. C. with holding points being interposed at about 180.degree. C. and at about 370.degree. C. After the solution has been held at 500.degree. C. for about 12 through 15 hours, a preformed substrate monocrystal of gadolinium yttrium penta-ultraphosphate is introduced thereinto and a layer of monocrystalline neodymium yttrium penta-ultraphosphate is grown thereon.

REFERENCES:
patent: 3893939 (1975-07-01), De Kalb
patent: 4002725 (1977-01-01), Bridenbaugh
patent: 4043860 (1977-08-01), Coin et al.
Weber, Review Nd Pentaphosphate Lasers, 1975, 431-442, Optical and Quantum Electronics 7.

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