Laser device

1 . A laser device comprising:

a vacuum container including a wall portion;

a laser medium disposed inside the vacuum container, the laser medium including a plurality of stacked solid-state laser media;

a cooler disposed outside the vacuum container; and

a heat conductor penetrating the wall portion in a predetermined direction intersecting a stacking direction of the plurality of solid-state laser media, and connected to the laser medium and the cooler.

2 . The laser device according to claim 1 further comprising:

a tube body disposed between the wall portion and the cooler,

wherein the wall portion has an opening allowing a space inside the vacuum container and a space inside the tube body to communicate with each other, and

wherein the heat conductor passes through the tube body and the opening.

3 . The laser device according to claim 1 further comprising:

a support portion supporting the vacuum container and the cooler; and

a vibration canceler disposed between the support portion and the cooler and configured to cancel vibration in the predetermined direction,

wherein the heat conductor penetrates the wall portion such that the heat conductor is able to move in the predetermined direction with respect to the wall portion, and

wherein the support portion supports the vacuum container and the cooler such that the cooler is able to move in the predetermined direction with respect to the vacuum container.

4 . The laser device according to claim 3 ,

wherein the vibration canceler is a first fluid pressure cylinder configured to be able to extend and contract in the predetermined direction.

5 . The laser device according to claim 3 further comprising:

a tube body disposed between the wall portion and the cooler,

wherein the wall portion has an opening allowing a space inside the vacuum container and a space inside the tube body to communicate with each other,

wherein the heat conductor passes through the tube body and the opening, and

wherein the tube body includes an extension/contraction portion configured to be able to extend and contract in the predetermined direction.

6 . The laser device according to claim 3 ,

wherein the predetermined direction is a vertical direction, and

wherein the support portion includes

a device frame having the vacuum container fixed thereto, and

a second fluid pressure cylinder disposed between the device frame and the cooler and configured to be able to extend and contract in the predetermined direction.

7 . The laser device according to claim 3 further comprising:

an excitation light source configured to emit excitation light incident on a plurality of positions on an end surface of the laser medium,

wherein the plurality of positions are arranged in the predetermined direction.

8 . The laser device according to claim 1 comprising:

a pair of coolers each being the cooler; and

a pair of heat conductors each being the heat conductor,

wherein the pair of coolers are disposed in a manner of facing each other with the vacuum container sandwiched therebetween in the predetermined direction, and

wherein the pair of heat conductors are disposed in a manner of facing each other with the laser medium sandwiched therebetween in the predetermined direction.

9 . The laser device according to claim 8 ,

wherein the predetermined direction is a vertical direction.

10 . The laser device according to claim 1 ,

wherein the heat conductor is disposed to overlap with the laser medium when viewed in the predetermined direction.

11 . The laser device according to claim 1 , further comprising:

a holder holding the plurality of solid-state laser media inside the vacuum container,

wherein an end portion of the heat conductor positioned inside the vacuum container is connected to the holder.

12 . A laser device comprising:

a vacuum container including a wall portion;

a laser medium disposed inside the vacuum container;

a cooler disposed outside the vacuum container;

a heat conductor penetrating the wall portion in a predetermined direction and connected to the laser medium and the cooler;

a support portion supporting the vacuum container and the cooler; and

a vibration canceler disposed between the support portion and the cooler and configured to cancel vibration in the predetermined direction,

wherein the heat conductor penetrates the wall portion such that the heat conductor is able to move in the predetermined direction with respect to the wall portion, and

wherein the support portion supports the vacuum container and the cooler such that the cooler is able to move in the predetermined direction with respect to the vacuum container.