Integration of Erbium-Doped Lithium Niobate Microtubes into Ordered Macroporous Silicon


  • The authors thank the Deutsche Forschungsgemeinschaft for funding this work in the framework of the priority program SPP 1165 “Nanowires and Nanotubes” (STE 1127/2-1, ZA 191/17-1), T. Geppert and K. Sklarek for template preparation, and R. Möhner and R. Scholz for technical support and discussions.


original image

Er3+-doped LiNbO3 microtubes have been prepared by the infiltration of ordered macroporous silicon with Er:LiNbO3 melts (see Figure). The microtubes consist of single-crystalline segments and exhibit the characteristic photoluminescence of Er3+, which coincides with the transmittance maximum of silica-based optical components.