AN UNBIASED VIEW OF KYW CRYSTAL

The obtain bandwidth e.g. of Yb:KGW and Yb:KYW may be very substantial in comparison with that of Yb:YAG. This allows for large wavelength tunability and for much shorter pulse durations from mode-locked lasers. Values very well underneath one hundred fs are already reached with passive method locking.The Yb-doped potassium yttrium tungstate (Yb:K