AN UNBIASED VIEW OF KYW CRYSTAL

The get bandwidth e.g. of Yb:KGW and Yb:KYW may be very huge in contrast with that of Yb:YAG. This allows for wide wavelength tunability and for Significantly shorter pulse durations from mode-locked lasers. Values nicely below a hundred fs have been obtained with passive manner locking.The comparison with glasses is acceptable since the big gain