GETTING MY KYW CRYSTAL TO WORK

The acquire bandwidth e.g. of Yb:KGW and Yb:KYW is quite large in comparison with that of Yb:YAG. This permits for broad wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values effectively under one hundred fs are obtained with passive mode locking.This special characteristic of ultrafast pulses enables nonlinear