Patent US4955699A successfully refreshed from Google Patents.
US4955699A
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Precious metal doped crystals for hardening of the crystals
Assignee: Micron Technology Inc
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Filing: 1988-11-23
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Granted: 1990-09-11
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Expires: 2008-11-23
Abstract
Abstract Disclosed is a crystal 1 of thallium arsenic selenide, thallium arsenic sulfide, thallium vanadium sulfide, thallium phosphorous selenide, lead halide, cadmium sulfide, cadmium selenide, cadmium tin arsenide, cadmium germanium arsenide, indium phosphoride, indium arsenide, or mixtures thereof, doped with a precious metal in an amount of about 25 ppm up to the solubility limit of a precious metal in the crystal. The crystal is useful in nonlinear optical devices, acousto-optical devices, piezoelectric devices, and other types of optical and acoustic devices.
Inventors
- 👤 Narsingh B. Singh
- 👤 Tom Henningsen
- 👤 Robert Mazelsky
- 👤 Richard H. Hopkins
- 👤 Milton S. Gottlieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:51
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/0009; G02F1/0018; C; C30; C30B; C30B11/00; C30B29/00; C30B29/10; C30B29/46
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
64 words
A crystalline structure selected from the group consisting of thallium arsenic selenide, thallium arsenic sulfide, thallium vanadium sulfide, thallium phosphorous selenide, lead halide, and mixtures thereof, where said crystalline structure is doped by a precious metal selected from the group consisting of copper, silver, gold and mixtures thereof, in an amount of about 25 ppm by weight up to about 3 ppm by weight.
Claim 2
Dependent Claim
64 words
A crystalline structure selected from the group consisting of thallium arsenic selenide, thallium arsenic sulfide, thallium vanadium sulfide, thallium phosphorous selenide, lead halide, and mixtures thereof, where said crystalline structure is doped by a precious metal selected from the group consisting of copper, silver, gold and mixtures thereof, in an amount of about 25 ppm by weight up to about 3 ppm by weight.
Claim 3
Dependent Claim
10 words
A crystalline structure according to claim 1 which is multicrystalline.
Claim 4
Dependent Claim
7 words
A single crystal according to claim 1.
Claim 5
Dependent Claim
39 words
A crystalline structure according to claim 1 wherein the amount of said precious metal is about 50 to about 300 ppm, and is selected from the group consisting of silver, gold, and mixtures thereof, to provide a hardened material.
Claim 6
Dependent Claim
13 words
A crystalline structure according to claim 1 wherein said precious metal is silver.
Claim 7
Dependent Claim
13 words
A crystalline structure according to claim 1 wherein said precious metal is gold.
Claim 8
Dependent Claim
32 words
A crystalline structure according to claim 1 wherein said crystalline structure is lead halide and the halide in said lead halide is selected from the group consisting of chlorine, bromine, and iodine.
Claim 9
Dependent Claim
14 words
A crystalline structure according to claim 1 wherein said crystal is thallium arsenic selenide.
Claim 10
Dependent Claim
14 words
A crystalline structure according to claim 1 wherein said crystal is thallium arsenic sulfide.
Claim 11
Dependent Claim
14 words
A crystalline structure according to claim 1 wherein said crystal is thallium vanadium sulfide.
Claim 12
Dependent Claim
14 words
A crystalline structure according to claim 1 wherein said crystal is thallium phosphorous selenide.
Claim 13
Dependent Claim
12 words
A crystalline structure according to claim 1 having polished opposing optical faces.
Claim 14
Dependent Claim
16 words
A crystalline structure according to claim 12 wherein said faces are coated with an antireflective coating.
Claim 15
Dependent Claim
87 words
A crystalline structure selected from the group consisting of thallium arsenic selenide, thallium arsenic sulfide, thallium vinadium sulfide, thallium phosphorous selenide, lead halide, cedmium sulfide, cadmium selenide, cadmium tin arsenide, cadmium germanium arsenide, indium phosphide, indium arsenide, and mixtures thereof, where said crystalline structure is doped by a precious metal in an amount of about 25 ppm by weight up to the solubility limit of said precious metal in the crystalline structure, and wherein sending and receiving transducers are mounted on one surface of said crystalline structure.
Claim 16
Dependent Claim
87 words
A crystalline structure selected from the group consisting of thallium arsenic selenide, thallium arsenic sulfide, thallium vinadium sulfide, thallium phosphorous selenide, lead halide, cedmium sulfide, cadmium selenide, cadmium tin arsenide, cadmium germanium arsenide, indium phosphide, indium arsenide, and mixtures thereof, where said crystalline structure is doped by a precious metal in an amount of about 25 ppm by weight up to the solubility limit of said precious metal in the crystalline structure, and wherein sending and receiving transducers are mounted on one surface of said crystalline structure.
Claim 17
Dependent Claim
29 words
Single crystal consisting of thallium arsenic selenide doped with silver in an amount from about 25 ppm to about the solubility limit of silver in crystalline thallium arsenide selenide.
Claim 18
Dependent Claim
29 words
Single crystal consisting of thallium arsenic selenide doped with silver in an amount from about 25 ppm to about the solubility limit of silver in crystalline thallium arsenide selenide.
Claim 19
Dependent Claim
19 words
A crystal according to claim 15 when the amount of said silver is about 50 to about 300 ppm.
Claim 20
Dependent Claim
17 words
A crystal according to claim 15 in the form of a rod having opposing optically polished faces.
Claim 21
Dependent Claim
54 words
A single crystal, in the form of a rod, consisting of thallium arsenic selenide doped with silver in an amount from amount 25 ppm to about the solubility limit of silver in crystalline thallium arsenide selenide, where the rod has opposed optically polished faces, with a transducer mounted to the side of said rod.
Claim 22
Dependent Claim
54 words
A single crystal, in the form of a rod, consisting of thallium arsenic selenide doped with silver in an amount from amount 25 ppm to about the solubility limit of silver in crystalline thallium arsenide selenide, where the rod has opposed optically polished faces, with a transducer mounted to the side of said rod.
Claim 23
Dependent Claim
45 words
A single crystal consisting of thallium arsenic selenide doped with silver in an amount from about 25 ppm to about the solubility limit of silver in crystalline thallium arsenide selenide, having a sending transducer and a receiving transducer mounted to the side of said crystal.
Claim 24
Dependent Claim
45 words
A single crystal consisting of thallium arsenic selenide doped with silver in an amount from about 25 ppm to about the solubility limit of silver in crystalline thallium arsenide selenide, having a sending transducer and a receiving transducer mounted to the side of said crystal.
Claim 25
Dependent Claim
30 words
A single crystal consisting of thallium arsenic selenide doped with gold in an amount from about 25 ppm to about the solubility limit of gold in crystalline thallium arsenide selenide.
Claim 26
Dependent Claim
30 words
A single crystal consisting of thallium arsenic selenide doped with gold in an amount from about 25 ppm to about the solubility limit of gold in crystalline thallium arsenide selenide.
Claim 27
Dependent Claim
18 words
A crystal according to claim 20 when the amount of gold is about 50 to about 300 ppm.
Claim 28
Dependent Claim
17 words
A crystal according to claim 20 in the form of a rod having opposing optically polished faces.
Claim 29
Dependent Claim
16 words
A crystal according to claim 22 having a transducer mounted to the side of said rod.
Claim 30
Dependent Claim
45 words
A single crystal consisting of thallium arsenic selenide doped with copper in an amount from about 25 ppm to about the solubility limit of copper in crystalline thallium arsenide selenide, having a sending transducer and a receiving transducer mounted to the side of said crystal.
Claim 31
Dependent Claim
45 words
A single crystal consisting of thallium arsenic selenide doped with copper in an amount from about 25 ppm to about the solubility limit of copper in crystalline thallium arsenide selenide, having a sending transducer and a receiving transducer mounted to the side of said crystal.
Claim 32
Dependent Claim
83 words
A crystalline structure selected from the group consisting of thallium arsenic selenide, thallium arsenic sulfide, thallium vanadium sulfide, thallium phosphorous selenide, lead halide, cadmium sulfide, cadmium selenide, cadmium tin arsenide, cadmium germanium arsenide, indium phosphide, indium arsenide, and mixtures thereof, where said crystalline structure is doped by a precious metal selected from the group consisting of copper, silver, gold, and mixtures thereof, in an amount of about 25 ppm by weight up to about 300 ppm by weight, to provide a hardened material.
Claim 33
Dependent Claim
83 words
A crystalline structure selected from the group consisting of thallium arsenic selenide, thallium arsenic sulfide, thallium vanadium sulfide, thallium phosphorous selenide, lead halide, cadmium sulfide, cadmium selenide, cadmium tin arsenide, cadmium germanium arsenide, indium phosphide, indium arsenide, and mixtures thereof, where said crystalline structure is doped by a precious metal selected from the group consisting of copper, silver, gold, and mixtures thereof, in an amount of about 25 ppm by weight up to about 300 ppm by weight, to provide a hardened material.
References Cited (Backward Citations)
US3792287A
Cited
US3746866A
Cited
US3799659A
Cited
US3915556A
Cited
US3733499A
Cited
US3805916A
Cited
US3929970A
Cited
US3994569A
Cited
US3928814A
Cited
US4468707A
Cited
US4577098A
Cited
US4825061A
Cited
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