Two-step absorption instead of two-photon absorption in 3D nanoprinting

Research data corresponding to the publication "Two-step absorption instead of two-photon absorption in 3D nanoprinting".对应于学术论文《三维纳米打印（3D nanoprinting）中以两步吸收（two-step absorption）替代双光子吸收（two-photon absorption）》的研究数据。