KYW CRYSTAL SECRETS

The gain bandwidth e.g. of Yb:KGW and Yb:KYW is incredibly large in comparison with that of Yb:YAG. This enables for wide wavelength tunability and for Considerably shorter pulse durations from manner-locked lasers. Values properly down below one hundred fs have been realized with passive manner locking.The Yb-doped potassium yttrium tungstate (Yb