A　diode　end-pumped　passively　Q-switched　Nd:Y0.8Lu0.2VO4　laser　with　a　Cr4+　:　YAG　crystal　is　first　demonstrated　in　this　paper.　The　maximum　continuous　wave　(CW)　output　power　of　5.59　W　is　obtained　at　the　incident　pump　power　of　13.07　W　with　the　output　transmission　T=20%,　resulting　in　an　optical-to-optical　efficiency　of　42.7%.　For　Q-switching　operation,　the　measured　pulse　duration　of　8.5　ns,　the　pulse　energy　of　45.24　mu　J　and　the　peak　power　of　5.32　kW　are　respectively　obtained　for　the　output　transmission　of　50%　when　the　Cr4+:　YAG　crystal　is　used　with　an　initial　transmission　(T-0)　of　60%.　(C)　2010　Elsevier　B.V.　All　rights　reserved.