Visible laser action of Dy3+ ions in monoclinic KY(WO4)2 and KGd(WO4)2 crystals under xe-flashlamp pumping

Pulsed laser action in the novel visible laser channels F-4(9/2) --> H-6(13/2) (at approximate to 0.57 mu m) and F-4(9/2) --> H-6(11/2) (at approximate to 0.66 mu m) of Dy3+ ions in monoclinic KY(WO4)(2) and KGd(WO4)(2) single crystals at nitrogen cryogenic temperature under Xe-flashlamp pumping is excited for the first time. All observed lasing emissions are identified. Some spectroscopic characteristics of the investigated crystals are also presented.