Conrads, LukasLukasConradsBontke, FlorianFlorianBontkeMathwieser, AndreasAndreasMathwieserBuske, PaulPaulBuskeWuttig, MatthiasMatthiasWuttigSchmitt, RobertRobertSchmittHolly, CarloCarloHollyTaubner, ThomasThomasTaubner2025-06-102025-06-112025-06-102025https://publica.fraunhofer.de/handle/publica/48848110.1038/s41467-025-59122-52-s2.0-10500330919440251195Conventional optical elements are bulky and limited to specific functionalities, contradicting the increasing demand of miniaturization and multi-functionalities. Optical metasurfaces enable tailoring light-matter interaction at will, especially important for the infrared spectral range which lacks commercially available beam-shaping elements. While the fabrication of those metasurfaces usually requires cumbersome techniques, direct laser writing promises a simple and convenient alternative. Here, we exploit the non-volatile laser-induced insulator-to-metal transition of the plasmonic phase-change material In<inf>3</inf>SbTe<inf>2</inf> (IST) for optical programming of large-area metasurfaces for infrared beam-shaping. We tailor the geometric phase of metasurfaces with rotated crystalline IST rod antennas to achieve beam steering, lensing, and beams carrying orbital angular momenta. Finally, we investigate multi-functional and cascaded metasurfaces exploiting enlarged holography, and design a single metasurface creating two different holograms along the optical axis. Our approach facilitates fabrication of large-area metasurfaces within hours, enabling rapid-prototyping of customized infrared meta-optics for sensing, imaging and quantum information.entruejournal article