Working in collaboration with Prof. Chu-Chen Chueh from National Taiwan University (NTU), Prof. Yu-Jung Lu and her collaborators demonstrated room-temperature plasmonic lasing by integrating quasi-two-dimensional (quasi-2D) perovskites with high-Q plasmonic nanostructures. A research team led by Prof. Yu-Jung Lu at the Research Center for Applied Sciences, Academia Sinica, recently published their findings in Science Advances.
Room-temperature nanolasers are crucial for advancing optical communication and photonic quantum technologies due to their capability to generate coherent light at a subwavelength scale.
However, their development is constrained by challenges such as insufficient gain, material instability, and high lasing thresholds. By integrating quasi-2D perovskites with high-Q plasmonic nanostructures, we demonstrate a stable, wavelength-tunable, single-mode laser operating at room temperature. This device leverages a unique exciton relocalization effect in quasi-2D perovskites with additive, substantially enhancing optical gain and improving stability.
When coupled with a waveguide-hybridized surface lattice resonance mode (W-SLR), the enhanced light-matter interaction facilitates single-mode lasing with a notably low threshold. Additionally, the device achieves robust lasing performance with extended operational stability.
These results provide a scalable, low-cost, and energy-efficient platform for nanolasing, with potential applications in next-generation photonic technologies, including LiDAR, sensing, optical communication, and computation.
The research was published in Science Advances on May 7, 2025, and was featured on the journal’s homepage as a highlighted article. The first author is Yen-Yu Wang, a Ph.D. student of TIGP-Nano program at Academia Sinica. Xing-Hao Lee is listed as a co-first author and is currently affiliated with TSMC. The research was supported by Academia Sinica, National Science and Technology Council of Taiwan, and NTU-AS Innovative Joint Program.
“After seven years of searching for the right materials and design, we finally see a solution. By precisely tailoring light-matter interaction at the nanoscale using thickness-controllable quasi-2D perovskites coupled with the high-Q plasmonic platform, we have realized stable room-temperature nanolasers,” said Prof. Yu-Jung Lu.
Prof. Yu-Jung Lu’s email address: yujunglu@gate.sinica.edu.tw