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Stabilizing room-temperature nanolasers with quasi-2D perovskites

June 10th, 2025
Stabilizing room-temperature nanolasers with quasi-2D perovskites
This research on room-temperature nanolasing using quasi-two-dimensional (quasi-2D) perovskites was featured as a highlighted article on the journal's homepage. Credit: National Taiwan University

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.

Working in collaboration with Prof. Chu-Chen Chueh from National Taiwan University (NTU), Prof. Yu-Jung Lu and her collaborators demonstrate room-temperature plasmonic lasing by integrating quasi-two-dimensional (quasi-2D) perovskites with high-Q plasmonic nanostructures.

By integrating quasi-2D perovskites with high-Q plasmonic nanostructures, the researchers demonstrate a stable, wavelength-tunable, single-mode laser operating at room temperature.

The research team led by Prof. Yu-Jung Lu at the Research Center for Applied Sciences, Academia Sinica, published their findings in Science Advances.

This device leverages a unique exciton relocalization effect in quasi-2D perovskites with an 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 first author is Yen-Yu Wang, a Ph.D. student of the TIGP-Nano program at Academia Sinica. Xing-Hao Lee is listed as a co-first author and is currently affiliated with TSMC.

"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.

More information:
Yen-Yu Wang et al, Plasmon-enhanced exciton relocalization in quasi-2D perovskites for low-threshold room-temperature plasmonic lasing, Science Advances (2025). DOI: 10.1126/sciadv.adu6824

Provided by National Taiwan University

Citation: Stabilizing room-temperature nanolasers with quasi-2D perovskites (2025, June 10) retrieved 26 July 2025 from https://sciencex.com/wire-news/511011332/stabilizing-room-temperature-nanolasers-with-quasi-2d-perovskite.html
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