DS Series

Principle

The optical excitation in diode pumped Yb:YAG lasers is generated by high power, laser diode modules, assembled into stacks.

After beam shaping, the pump light (wavelength 940 nm) emitted by these laser diodes is reflected by a parabolic mirror onto the centrally positioned disc.

The pump light is reflected from the coated back side of the disc and strikes the parabolic mirror a second time, deflects onto a retro reflector, before returning to the parabolic mirror to be recoupled into the disc. This process repeats until the pump light has passed through the disc 16 times and is completely absorbed. A second coating on the back of the disc and an outcoupling mirror, situated in front of the parabolic reflector, form the resonator. The emerging laser light of very high beam quality is coupled by suitable optics into a fiber optic with a diameter of 150 µm or 300 µm. The laser output can be delivered down several fiber optics by using fast beam switching, so that a single source can be utilized efficiently.