NOT KNOWN DETAILS ABOUT KYW CRYSTAL

The achieve bandwidth e.g. of Yb:KGW and Yb:KYW is very huge compared with that of Yb:YAG. This enables for huge wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values well beneath 100 fs are already obtained with passive method locking.This special attribute of ultrafast pulses allows nonlinear optical interact