THE SMART TRICK OF KYW CRYSTAL THAT NO ONE IS DISCUSSING

The gain bandwidth e.g. of Yb:KGW and Yb:KYW is quite substantial compared with that of Yb:YAG. This allows for extensive wavelength tunability and for Substantially shorter pulse durations from manner-locked lasers. Values nicely under a hundred fs are actually obtained with passive manner locking.The Yb-doped potassium yttrium tungstate (Yb:KYW)