Copper laser modulator driving assembly including a magnetic compression laser

• US 5,313,481 A
• Filed: 09/29/1993
• Issued: 05/17/1994
• Est. Priority Date: 09/29/1993
• Status: Expired due to Fees

• Current Assignee: United States Enrichment Corporation (Centrus Energy Corp.)
• Original Assignee: United States Department of Energy (Government of the United States of America)
• Inventors: Ball, Don G., Cook, Edward G., Birx, Daniel L.
• Primary Examiner(s): Healy, Brian
• Application Number:
  US08/128,185
• Time in Patent Office: 230 Days
• Field of Search: 372/25, 372/26, 372/28, 372/37, 372/38, 372/55, 372/56, 372/57, 372/73, 372/74, 372/81, 372/82, 372/108, 372/109, 372/76, 372/87
• US Class Current: 372/37
• CPC Class Codes: H01S 3/031 Metal vapour lasers, e.g. metal vapour generation
• CPC Class Codes: H01S 3/227 Metal vapour
• CPC Class Codes: H03K 17/80 using non-linear magnetic devices; using non-linear dielectric devices H03K17/95, H03K17/97 take precedence
• CPC Class Codes: H03K 3/57 the switching device being a semiconductor device

Abstract

A laser modulator (10) having a low voltage assembly (12) with a plurality of low voltage modules (14) with first stage magnetic compression circuits (20) and magnetic assist inductors (28) with a common core (91), such that timing of the first stage magnetic switches (30b) is thereby synchronized. A bipolar second stage of magnetic compression (42) is coupled to the low voltage modules (14) through a bipolar pulse transformer (36) and a third stage of magnetic compression (44) is directly coupled to the second stage of magnetic compression (42). The low voltage assembly (12) includes pressurized boxes (117) for improving voltage standoff between the primary winding assemblies (34) and secondary winding (40) contained therein.

Claims

1. A magnetic compression laser driving assembly, comprising:

a first compression stage including a plurality of first stage magnetic switches, each of said magnetic switches having associated therewith a magnetic assist coil with a core common to each of the magnetic assist coils.

2. The magnetic compression laser driving assembly of claim 1, wherein:

the quantity of first stage magnetic switches is four.

3. The magnetic compression laser driving assembly of claim 1, wherein:

said first stage magnetic switches are connected such that the energy output of all of said first stage magnetic switches is electrically summed.

4. The magnetic compression laser driving assembly of claim 1, and further including:

a second compression stage coupled to said first compression stage through a step up transformer.

5. The magnetic compression laser driving assembly of claim 4, wherein:

the second compression stage is bipolar.

6. The magnetic compression laser driving assembly of claim 5, and further including:

a third compression stage directly electrically coupled to the second compression stage.

7. The magnetic compression laser driving assembly of claim 6, wherein:

the third compression stage is bipolar.

8. The magnetic compression laser driving assembly of claim 1, wherein:

said first stage magnetic switches are housed together in a low voltage assembly.

9. The magnetic compression laser driving assembly of claim 8, wherein:

the low voltage assembly has a cold plate on the exterior thereof with at least some of the components of the first compression stage mounted thereon.

10. The magnetic compression laser driving assembly of claim 9, wherein:

the cold plate is cooled by water being caused to flow therethrough.

11. The magnetic compression laser driving assembly of claim 9, wherein:

each of said first stage magnetic switches is affixed to the cold plate.

12. The magnetic compression laser driving assembly of claim 1, wherein:

each of said first stage magnetic switches includes a toroidal shaped winding of magnetic material.

13. The magnetic compression laser driving assembly of claim 6, wherein:

the second compression stage and the third compression stage are housed together in an output assembly.

14. The magnetic compression laser driving assembly of claim 13, wherein:

the output assembly is at least partially enclosed in a dielectric fluid filled housing.

15. A magnetic compression laser driving assembly, comprising:

a plurality of magnetic compression stages connected in series wherein a first of said plurality of magnetic compression stages includes a plurality of first stage magnetic compression switches connected such that the energy output of all of said first stage magnetic compression stages is electrically summed.

16. The magnetic compression laser driving assembly of claim 15, wherein:

each of said first stage magnetic compression switches includes a magnetic switch inductor with an associated magnetic assist input inductor; and

all of said magnetic assist input inductors share a common core.

17. The magnetic compression laser driving assembly of claim 16, wherein:

each of said first stage magnetic compression switches is housed in a first stage housing having a cold plate covering at least a portion thereof through which water may be pumped for cooling said first stage magnetic compression switch.

18. The magnetic compression laser driving assembly of claim 16, wherein:

a second and a third of said plurality of magnetic compression stages are housed in an output assembly housing at least a portion of which is pressurized.

19. The magnetic compression laser driving assembly of claim 18, wherein:

the second and third magnetic compression stages are bipolar.