2.3 J, 25 Hz Nd:YAG/sapphire composite powerchip amplifier operating at room temperature Arvydas Kausas, Vincent Yahia, Hideho Odaka, Mitsuhiro Yoshida and Takunori Taira EPJ Web Conf., 307 (2024) 04059 Published online: 18 October 2024 DOI: 10.1051/epjconf/202430704059