Patent ID: 9664898
Date: 2017-05-30
CPC Classifications: B23K,B41M,G02B,H01S

Claim:
1. A laser device comprising at least two laser units, which are stacked in layers, each laser unit being configured to emit a respective laser beam, and each laser unit comprising: a plurality of resonator tubes for a gas to be excited, the resonator tubes being arranged in a loop and being mechanically connected to each other and forming a common tubular space; connecting elements for connecting adjacent resonator tubes; excitation means for the resonator tubes for exciting the gas in the resonator tubes for generating a laser light; mirrors arranged in the connecting elements for reflecting the laser light between the resonator tubes; a partially reflecting output coupler for coupling out the respective laser beam, the partially reflecting output coupler terminating a resonator length for the laser light; a rear mirror; and an integrated output flange connected between two resonator tubes, the integrated output flange comprising the output coupler and the rear mirror, wherein the rear mirror is provided at a first face of the integrated output flange and the output coupler is provided at a second face of the integrated output flange, wherein: