Laserindretning og fremgangsmåde til markering af en genstand

摘要

The invention relates to a laser device comprising at least two laser units (10), which are stacked in layers, each laser unit being configured to emit a laser beam, and each laser unit comprising a plurality of resonator tubes (12) for a gas to be excited, the resonator tubes being in fluidic communication with each other and forming a common tubular space, connecting elements (20,21) for connecting adjacent resonator tubes, excitation means (70) for the resonator tubes for exciting the gas in the resonator tubes for generating a laser light, mirrors (22) arranged in the connecting elements for reflecting the laser light between the resonator tubes, and a partially reflecting output coupler (42) for coupling out a laser beam. The invention also relates to a method for marking an object.