Hermetically sealed container for laser device

A laser device comprising:

• a vertical external cavity surface emitting laser device, a first container with an internal space accommodating the vertical external cavity surface emitting laser device;
• wherein said first container hermetically seals said internal space from an external space;
• wherein said first container comprises at least one container wall with at least one first through-opening;
• wherein said at least one first through-opening is adapted for passage of an optical pump beam from the external space into the internal space;
• and
• a sealing mirror chip and a sealing mirror on said sealing mirror chip located in said internal space inside said first container and covering said at least one first through-opening, wherein said at least one first through-opening is hermetically sealed by said sealing mirror on said sealing mirror chip such that said first through-opening with said sealing mirror on said sealing mirror chip is an entrance for said optical pump beam;
• said vertical external cavity surface emitting laser device comprising a laser chip including an active region and a second mirror, said laser chip being located in said internal space inside said first container;
• and
• wherein said sealing mirror chip with said sealing mirror and said laser chip are spaced apart to form an external cavity of the vertical external cavity surface emitting laser device in the internal space;
• wherein the first container has at least one second through-opening, said at least one second through-opening being hermetically sealed with a seal;
• and wherein said laser chip is located between said sealing mirror chip and said at least one second through opening;
• and
• wherein said laser device being adapted to feed a laser emission beam from the vertical external cavity surface emitting laser device from the internal space to the external space through said at least one second through opening and said second mirror.