Yb:YVO4 (Ytterbium doped Yttrium Vanadate, YVO4:Yb3+) is a laser active crystal that is used as a gain medium in solid-state lasers. The crystal has a high absorption cross section at the 976 nm pump wavelength and has good thermal conductivity, which makes it well-suited for high-power laser applications. Yb:YVO4 is used in diode-pumped solid-state lasers (DPSSLs) and it provides good performance in terms of energy conversion efficiency, optical-to-optical conversion efficiency, and stability. The crystal is also used as a saturable absorber in mode-locked lasers and for frequency conversion applications. Yb:YVO4 has good chemical, thermal and mechanical stability and is relatively easy to grow and process, making it a popular choice for laser applications.