Gas laser device and condenser

Patent metadata

Field	Value
Publication number	US-10096966-B2
Application number	US-201615290518-A
Country	US
Kind code	B2
Filing date	Oct 11, 2016
Priority date	Jun 26, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A gas laser device may include: a laser chamber containing laser gas; a first discharge electrode disposed in the laser chamber; a second discharge electrode disposed to face the first discharge electrode in the laser chamber; and a condenser including a polyimide dielectric and configured to supply power to between the first discharge electrode and the second discharge electrode.

First claim

The invention claimed is:

1. A gas laser device comprising:
a laser chamber containing laser gas;
a first discharge electrode disposed in the laser chamber;
a second discharge electrode disposed to face the first discharge electrode in the laser chamber; and
a condenser including a polyimide dielectric and configured to supply power to between the first discharge electrode and the second discharge electrode, wherein:
the condenser includes a condenser layer composed of a polyimide film constituting the polyimide dielectric and a pair of electrode films disposed on the polyimide film such that part of each of the pair of electrode films faces one another via the polyimide film;
surfaces of the pair of electrode films are covered with electrical insulating layers;
the condenser is formed by laminating a plurality of the condenser layers;
the condenser includes a plurality of heat sink layers disposed between the plurality of condenser layers which are laminated;
each of the plurality of electrical insulating layers includes at least a first insulating member and a second insulating member whose dielectric breakdown voltage is higher than that of the first insulating member;
the second insulating member is provided in contact with an electrode film of the pair of electrode films and the polyimide film; and
the first insulating member is provided in contact with the second insulating member and one of the plurality of heat sink layers.

2. The gas laser device according to claim 1 , wherein:
the pair of electrode films includes a first electrode film and a second electrode film;
each of the first electrode film and the second electrode film is divided into a plurality of electrode regions at intervals in a predetermined direction, in an in-plane direction of the polyimide film; and
an end portion of each of the plurality of electrode regions of the first electrode film faces an end portion of each of the plurality of electrode regions of the second electrode film via the polyimide film.

3. The gas laser device according to claim 1 , wherein:
the pair of electrode films includes a first electrode film and a second electrode film;
each of the first electrode film and the second electrode film is divided into a plurality of electrode regions at intervals in a predetermined direction, in an in-plane direction of the polyimide film; and
each of the plurality of electrode regions has a rectangular shape.

4. The gas laser device according to claim 1 , wherein:
the pair of electrode films includes a first electrode film and a second electrode film;
the first electrode film is divided into a plurality of electrode regions including at least three electrode regions at intervals in a predetermined direction, in an in-plane direction of the polyimide film; and
two electrode regions of the plurality of electrode regions located at opposite ends of the plurality of electrode regions each has a width in the predetermined direction greater than that of another electrode region of the plurality of electrode regions located between the two electrode regions.

5. The gas laser device according to claim 1 , wherein:
the pair of electrode films includes a first electrode film and a second electrode film;
each of the first electrode film and the second electrode film is divided into a plurality of electrode regions at intervals in a predetermined direction, in an in-plane direction of the polyimide film; and
the intervals have substantially same lengths with each other.

6. The gas laser device according to claim 1 , wherein:
the pair of electrode films includes a first electrode film and a second electrode film;
each of the first electrode film and the second electrode film is divided into a plurality of electrode regions at intervals in a predetermined direction, in an in-plane direction of the polyimide film; and
each of the intervals has a length greater than a thickness of the polyimide film.

7. The gas laser device according to claim 1 , further comprising electrode plates, wherein:
the plurality of the condenser layers, the plurality of electrical insulating layers, and the plurality of heat sink layers are sandwiched between the electrode plates.

8. The gas laser device according to claim 1 , further comprising two outside heat sink layers disposed respectively on outside of two outermost condenser layers of the plurality of condenser layers.

9. The gas laser device according to claim 1 , wherein a surface of the second insulating member is substantially flat.

10. The gas laser device according to claim 1 , wherein:
the pair of electrode films includes a first electrode film and a second electrode film;
the plurality of condenser layers include a first condenser layer, a second condenser layer adjacent to the first condenser layer, and a third condenser layer adjacent to the second condenser layer;
the first electrode film of the first condenser layer faces the first electrode film of the second condenser layer via one of the plurality of heat sink layers; and
the second electrode film of the second condenser layer faces the second electrode film of the third condenser layer via another one of the plurality of heat sink layers.

11. A gas laser device comprising:
a laser chamber containing laser gas;
a first discharge electrode disposed in the laser chamber;
a second discharge electrode disposed to face the first discharge electrode in the laser chamber; and
a condenser including a polyimide dielectric and configured to supply power to between the first discharge electrode and the second discharge electrode, wherein:
the condenser includes a condenser layer composed of a polyimide film constituting the polyimide dielectric and a pair of electrode films disposed on the polyimide film such that part of each of the pair of electrode films faces one another via the polyimide film;
surfaces of the pair of electrode films are covered with electrical insulating layers;
the condenser is formed by laminating a plurality of the condenser layers;
the condenser includes a plurality of heat sink layers disposed between the plurality of condenser layers which are laminated;
each of the plurality of electrical insulating layers includes at least a first insulating member as an elastic body and a second insulating member as an inelastic body;
the second insulating member is provided in contact with an electrode film of the pair of electrode films and the polyimide film; and
the first insulating member is provided in contact with the second insulating member and one of the plurality of heat sink layers.

12. The gas laser device according to claim 11 , wherein:
the pair of electrode films includes a first electrode film and a second electrode film;
each of the first electrode film and the second electrode film is divided into a plurality of electrode regions at intervals in a predetermined direction, in an in-plane direction of the polyimide film; and
an end portion of each of the plurality of electrode regions of the first electrode film faces an end portion of each of the plurality of electrode regions of the second electrode film via the polyimide film.

13. The gas laser device according to claim 11 , wherein:
the pair of electrode films includes a first electrode film and a second electrode film;
each of the first electrode film and the second electrode film is divided into a plurality of electrode regions at intervals in a predetermined direction, in an in-plane direction of the polyimide film; and
each of the plurality of electrode regions has a rectangular shape.

14. The gas laser device accordin

Assignees

• Gigaphoton Inc

Inventors

• Suwa Akira
• Kakizaki Kouji
• Tsushima Hiroaki
• OHKUBO Tomoyuki
• Umeda Hiroshi
• Katsuumi Hisakazu

Classifications

• H01S3/09702 Primary

  Details of the driver electronics and electric discharge circuits · CPC title

• H01G4/14

  Organic dielectrics · CPC title

• H01S3/0385

  Shape · CPC title

• H01S3/036

  Means for obtaining or maintaining the desired gas pressure within the tube, e.g. by gettering, replenishing; Means for circulating the gas, e.g. for equalising the pressure within the tube {(H01S3/031 takes precedence)} · CPC title

• H01S3/0305

  Selection of materials for the tube or the coatings thereon · CPC title