# US 5,349,594 A · Insulative laser shell coupler

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- Number: US 5,349,594 A
- Document ID: US5349594A
- Status: Granted
- Kind: A
- Application number: 08/089,917
- Filed: 1993-07-12
- Granted: 1994-09-20
- Earliest claimed: 1993-07-12
- Assignees: The United States of America as represented by the United States Department of Energy
- Inventors: Phillip A. Arnold; Andrew T. Anderson; Terry W. Alger
- Web page: https://patentgrep.com/patent/US5349594A

## CPC

- H01S 3/03: of gas laser discharge tubes
- H01S: DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL

## Abstract

A segmented coaxial laser shell assembly having at least two water jacket sections, two pairs of interconnection half rings, a dialectric break ring, and a pair of threaded ring sections. Each water jacket section with an inner tubular section that defines an inner laser cavity with water paths adjacent to at least a portion of the exterior of the inner tubular section, and mating faces at the end of the water jacket section through which the inner laser cavity opens and which defines at least one water port therethrough in communication with the water jackets. The water paths also define in their external surface a circumferential notch set back from and in close proximity to the mating face. The dielectric break ring has selected thickness and is placed between, and in coaxial alignment with, the mating faces of two of the adjacent water jacket sections. The break ring also defines an inner laser cavity of the same size and shape as the inner laser cavity of the water jacket sections and at least one water passage through the break ring to communicate with at least one water port through the mating faces of the water jacket sections.

## Claims

### Claim 1

A segmented coaxial laser shell assembly comprising:
at least two water jacket sections each having:
an inner tubular section defining an inner tubular laser path cavity;
water path means adjacent at least a portion of the exterior of said inner tubular section for conducting water therethrough;
mating face means at least one end of said water jacket section through which said inner tubular laser path cavity opens and which defines at least one water port therethrough in communication with said water path means; and
said water path means in the outer surface thereof defines a circumferential notch set back from and in close proximity to said mating face means;
interconnection ring means for mounting within said external circumferential notch in said water path means of each of said two water jacket sections;
a dielectric break ring of a selected thickness to be placed between and in coaxial alignment with said mating face means of two adjacent water jacket sections with break ring means, defining an inner tubular laser path cavity of the same size and shape as said inner tubular laser path cavity of said each two adjacent water jacket sections and at least one water passage through said break ring to communicate with said at least one water port through said mating face means of said two adjacent water jacket sections; and
a pair of threaded ring sections each with a threaded mating region to be captured by the threaded mating section of the other of the pair of threaded ring sections in the vicinity and external to said break ring, each of said pair of threaded ring sections also including a shoulder for capturing said one of said pair of ring means within said notch in said water jacket means with said shoulders coming into contact with said pair of ring means as said pair of threaded rings sections are rotated in the engaging direction to bring and hold said break ring and two water jacket sections together.

### Claim 2 (depends on 1)

A segmented coaxial laser shell assembly as in claim 1 further comprising a current return means that is the outer most component of the assembly.

### Claim 3 (depends on 1)

A segmented coaxial laser shell assembly as in claim 1 wherein:
said mating face means of each of said two water jacket sections defines a groove that surrounds each of said at least one water port; and
said assembly further comprises sealing means for placement in said groove surrounding said water ports for abutting against the side of said break ring to act as a water seal.

### Claim 4 (depends on 1)

A segmented coaxial laser shell assembly as in claim 1 wherein:
said mating face means of each of said two water jacket sections defines a groove that surrounds and is spaced apart from said inner tubular laser path cavity; and
said assembly further comprises sealing means for placement in said groove surrounding said inner tubular laser path cavity for abutting against the side of said break ring to seal said laser path cavity from external influences.

### Claim 5

A segmented coaxial laser shell assembly comprising in combination:
(a) at least two fluid jacket sections, each having:
(i) an inner tubular section defining an inner tubular laser path cavity;
(ii) a fluid path, adjacent to at least a portion of the exterior of said inner tubular section for conducting fluid therethrough; and
(iii) mating face in at least one of said fluid jacket sections, through which said inner tubular laser path cavity opens, and which defines at least one fluid port therethrough in communication with said fluid path;
(b) a dielectric break ring of a selected thickness to be placed between and in coaxial alignment with said mating face;
(c) said break ring defining:
(i) an inner tubular laser path cavity having a substantially similar size and shape as said inner tubular laser path cavity; and
(ii) at least one fluid passage for communicating with said at least one fluid port through said mating face; and
(d) a coupling for retaining said break ring and said at least two fluid jacket sections together.

### Claim 6 (depends on 5)

The segmented coaxial laser shell assembly according to claim 5, wherein each fluid path defines a generally circumferential notch which is set back from and in close proximity to said mating face.

### Claim 7 (depends on 6)

The segmented coaxial laser shell assembly according to claim 6, further including an interconnection ring mounted within each notch.

### Claim 8 (depends on 7)

The segmented coaxial laser shell assembly according to claim 7, wherein said coupling includes a pair of threaded ring sections, each including a threaded mating region to be captured by the threaded mating section of the other of said pair of threaded ring sections, in the vicinity and external to said break ring.