Three-dimensional lasing in self-assembled perovskite microtube cavities

• Applicant: Libo Ma, Ph.D.
• Subject Area: Experimental Condensed Matter Physics ; Synthesis and Properties of Functional Materials ; Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: since 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 470322471

New types of microlasers with improved performance and unique functionalities have always been pursued to open up new opportunities to discover novel physical phenomena and generate new application potential. In this project, we aim to design and fabricate rolled-up perovskite microtube cavities to explore three-dimensional (3D) lasing. The 3D active microtube cavity provides a higher degree of freedom for manipulating the laser resonances, suggesting a versatile platform to explore novel physical effects and applications based on 3D microlasers. Metal halide perovskites are selected as the optical gain medium for the fabrication of microtube lasers owing to their large optical gain coefficient and chemically tailorable bandgap. The integration of optical gain media into specially designed microtube cavities is expected to demonstrate new laser device concepts for multiple orthogonally polarized emission beams, 3D directional lasing and on-chip multichannel lasing. With this investigation, we would pave the way for perovskite microtube lasers that can simultaneously deliver coherent light for different photonic components distributed in 3D space. The multichannel lasing source could become a key element in wavelength division multiplexing for on-chip parallel communication and optical data processing.

• DFG Programme: Research Grants