Efficient and compact green–yellow laser output at $543\mathrm{nm}$ is generated by intracavity frequency doubling of a cw diode-pumped $\mathrm{Nd}:\mathrm{Y}\mathrm{V}{\mathrm{O}}_4$ laser at $1086\mathrm{nm}$ under the condition of suppressing the higher gain transition near $1064\mathrm{nm}$ . With $14.5\mathrm{W}$ of diode pump power and the frequency-doubling crystal $\mathrm{Li}{\mathrm{B}}_3{\mathrm{O}}_5$ , as high as $2.35\mathrm{W}$ of cw output power at $543\mathrm{nm}$ is achieved, corresponding to an optical-to-optical conversion efficiency of 15.7%; the output power stability over $5\mathrm{h}$ is better than 2.56%. To the best of our knowledge, this is the highest watt-level laser at $543\mathrm{nm}$ generated by intracavity frequency doubling of a diode pumped $\mathrm{Nd}:\mathrm{Y}\mathrm{V}{\mathrm{O}}_4$ laser at $1086\mathrm{nm}$ .