2 um KYW:Tm,Ho laser with transverse diode pumping for passive Q-switching

The KYW:Tm,Ho laser operating at 2056 nm with 15 mJ and 25 ns pulse is used to study saturable absorption of PbS quantum-dot-doped silicate glasses. Various heat treatment conditions was used to prepare a series of saturable absorber samples having 1
^st
exciton maximum around 2 um.