# US 11,028,016 B2 · Method of manufacture of copper-doped glasses

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- Number: US 11,028,016 B2
- Document ID: US11028016B2
- Status: Granted
- Kind: B2
- Application number: 16/156,569
- Filed: 2018-10-10
- Published: 2019-02-07
- Granted: 2021-06-08
- Earliest claimed: 2016-02-19
- Assignees: The Government of the United States of America, as represented by the Secretary of the Navy
- Applicants: The Government of the United States of America, as represented by the Secretary of the Navy
- Inventors: Brian L. Justus; Alan L. Huston; Barbara A. Marcheschi
- Web page: https://patentgrep.com/patent/US11028016B2

## CPC

- C03C 23/002: {by ultraviolet light}
- C03C 3/06: with more than 90% silica by weight, e.g. quartz {(C03C3/045 takes precedence)}
- C03C 3/076: with 40% to 90% silica, by weight {(C03C3/045 takes precedence)}
- C03C 4/12: for luminescent glass; for fluorescent glass
- C03C 14/006: {the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material}
- C03C 21/008: {in solid phase, e.g. using pastes, powders}
- C09K 11/025: {non-luminescent particle coatings or suspension media}
- C09K 11/582: {Chalcogenides}
- C03C 2201/40: containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

A method of making a copper-doped glass comprising placing a target glass in a container, placing a target glass in a container, surrounding the target glass with a powder mixture comprised of fused silica (SiO2) powder and copper sulfide (Cu2S) powder, such that both the target glass and the surrounding powder are contained in the container, and heating the container and the target glass and the surrounding powder mixture to a temperature of between 800° C. and 1150° C.

## Claims

### Claim 1

A method of making a copper-doped glass comprising the steps of:
placing a target glass in a container;
surrounding the target glass with a powder mixture comprised of fused silica (SiO2) powder and copper sulfide (Cu2S) powder, such that both the target glass and the surrounding powder are contained in the container;
wherein the powder mixture is comprised of a SiO2 powder and Cu2S powder mixed according to the formula (SiO2)(1-x)(Cu2S)x, where 0.01<x<0.1; and
heating the container and the target glass and the surrounding powder mixture to a temperature of between 800° C. and 1150° C.

### Claim 2 (depends on 1)

The method of making a copper-doped glass of claim 1 wherein the powder mixture is
heated to a temperature of 1100° C. for about 5 hours, cooled to room temperature, and then reground after cooling.

### Claim 3 (depends on 1)

The method of making a copper-doped glass of claim 1 wherein
the step of heating the container and the target glass and the surrounding powder mixture is performed for a duration of between 1 and 10 hours.

### Claim 4 (depends on 1)

The method of making a copper-doped glass of claim 1 wherein the container is a fused quartz glass cylinder.

### Claim 5 (depends on 1)

The method of making a copper-doped glass of claim 1
wherein the temperature of between 800° C. and 1150° C. is below the softening point of the target glass.