Optical Excitation and Probing of Antiferromagnetic Modes with Nonuniform-in-depth Distribution in Birefringent Antiferromagnetic CrystalsRemoveA.A. Voronov, D.O. Ignatyeva, A.K. Zvezdin, T.B. Shapaeva, and V.I. BelotelovPhys. Rev. Applied 16, L051001 (2021)