Device for generating a laser radiation and associated fabrication method

Patent metadata

Field	Value
Publication number	US-10320142-B2
Application number	US-201715633903-A
Country	US
Kind code	B2
Filing date	Jun 27, 2017
Priority date	Jun 28, 2016
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

Disclosed is a device for generating a laser radiation including a box and an electrode, the electrode including a column extending along an axial direction and a collar surrounding the column and having a first face perpendicular to the axial direction and a second face parallel to the first face, the second face facing the box. The generating device includes a ring having a third face bearing against the box, the ring defining a hole emerging on the third face and accommodating the collar, the hole being defined along the axial direction by a bearing face arranged in the ring, perpendicular to the axial direction and facing the box, the first face bearing against the bearing face.

First claim

The invention claimed is:

1. A generating device for generating a laser radiation comprising:
a box, containing a gas configured to emit the radiation;
an electrode including a column extending along an axial direction and a collar at least partially surrounding the column in a plane perpendicular to the axial direction, the collar having a first face perpendicular to the axial direction and a second face parallel to the first face, the second face facing the box; and
a ring configured to fasten the electrode to the box, the ring having a third face bearing against the box and a fourth face parallel to the third face, the ring defining a first hole and a second hole coaxial to one another, each hole extending along the axial direction, the first hole emerging on the fourth face and at least partially accommodating the column, the second hole emerging on the third face and accommodating the collar,
wherein a transverse dimension measured along a direction perpendicular to the axial direction is defined for each hole, the transverse dimension of the first hole being strictly smaller than the transverse dimension of the second hole, the second hole being defined along the axial direction by a bearing face arranged in the ring, the bearing face being perpendicular to the axial direction and facing the box, the first face of the collar bearing against the bearing face of the ring, and
the third face is fastened to the box by molecular bonding.

2. The generating device according to claim 1 , wherein the column, the collar, the first hole and the second hole are cylindrical with a circular base around a main axis parallel to the axial direction, the main axis being shared by the column, the collar, the first hole and the second hole.

3. The generating device according to claim 1 , wherein the ring has an inner side face defining the first hole in a plane perpendicular to the axial direction, a play between the column and the inner side face being greater than or equal to 10 micrometers.

4. The generating device according to claim 3 , wherein a hydrophobic material is inserted between the column and the inner side face.

5. The generating device according to claim 1 , wherein the ring is made from a material transparent to visible radiation.

6. The generating device according to claim 1 , wherein the first face of the collar is fastened to the bearing face of the ring by an adhesive material.

7. The device according to claim 1 , wherein the generating device is a laser gyrometer.

8. A fabrication method for at least one device for generating a laser radiation including a box which contains a gas configured to emit the radiation, the method comprising:
providing at least one electrode including a column extending along a first axis and a collar at least partially surrounding the column in a plane perpendicular to the first axis, the collar having a first face perpendicular to the first axis and a second face parallel to the first face;
providing a support having at least one opening, each opening extending along a secondary axis;
providing, for each electrode, a ring for fastening the electrode to the box, the ring having a third face and a fourth face parallel to the third face, the ring defining a first hole and a second hole coaxial to one another, each hole extending along a main axis, the first hole emerging on the fourth face and the second hole emerging on the third face, the second hole being defined along a direction parallel to the main axis by a bearing face arranged in the ring, the bearing face being perpendicular to the main axis;
causing the fourth face of each ring to bear against the support such that each main axis is combined with the secondary axis of a corresponding opening;
depositing an adhesive material on the bearing face of each ring;
positioning each electrode in an inserted position in which the column is at least partially accommodated in an opening of the support and in the first hole of the corresponding ring, the collar being accommodated in the second hole of said ring, the first face of the collar facing the bearing face of the ring; and
applying a force on the third face of each electrode tending to press the first face of the collar against the bearing face of the corresponding ring.

9. The method according to claim 8 , wherein a plurality of electrodes are provided during the providing said at least one electrode, an assembly being defined for each electrode at the end of the applying, each assembly comprising an electrode and the corresponding ring,
the method further comprising simultaneously fastening each assembly to the box, the third face of each ring bearing against the box when the assembly comprising the ring is fastened to the box.

Assignees

• Thales Sa

Inventors

• Mary Alexandre Charles Lucien
• Foucret Dominique Pascal Marius

Classifications

• H01S3/038 Primary

  Electrodes, e.g. special shape, configuration or composition · CPC title

• H01S3/0385

  Shape · CPC title

• H01S3/03

  of gas laser discharge tubes · CPC title

• H01S3/2222

  Neon, e.g. in helium-neon (He-Ne) systems · CPC title

• G01C19/661

  details · CPC title