Femtosecond 3D-printing offers tantalizing avenues for miniaturization and integration of micro optical systems.Available photoresists,however,restrain their utility in liquid immersion,especially in media with refrac...Femtosecond 3D-printing offers tantalizing avenues for miniaturization and integration of micro optical systems.Available photoresists,however,restrain their utility in liquid immersion,especially in media with refractive indices larger than n=1.33,such as glues or biomedical fluids.We present monolithic 3D-printed immersion optics,equipped with compact microfluidic sealing to protect the micro optical device from intrusion of liquid immersion media.We experimentally demonstrate diffraction limited performance in water,silicone-,and immersion oil,for a tailored aspherical-spherical doublet with a numerical aperture of NA=0.625 and a footprint as small as a single mode optical fiber.Such compact monolithic immersion micro optics yield high potential to advance miniaturization for in situ biomedical sensing and robust coupling between fibers and photonic integrated circuits.展开更多
基金Carl-Zeiss-Stiftung(EndoPrint3D)University of Stuttgart(RiSC)+2 种基金Federal Ministry of Education and Research(GeDeSens2Virus,Project 16ME0374)The Baden-Württemberg Stiftung(Elite Programme for Postdocs)supported by a Joachim Herz Foundation Add-on Fellowship.
文摘Femtosecond 3D-printing offers tantalizing avenues for miniaturization and integration of micro optical systems.Available photoresists,however,restrain their utility in liquid immersion,especially in media with refractive indices larger than n=1.33,such as glues or biomedical fluids.We present monolithic 3D-printed immersion optics,equipped with compact microfluidic sealing to protect the micro optical device from intrusion of liquid immersion media.We experimentally demonstrate diffraction limited performance in water,silicone-,and immersion oil,for a tailored aspherical-spherical doublet with a numerical aperture of NA=0.625 and a footprint as small as a single mode optical fiber.Such compact monolithic immersion micro optics yield high potential to advance miniaturization for in situ biomedical sensing and robust coupling between fibers and photonic integrated circuits.
