journal article·2026-02

Broadband Tunable Photonic Crystal Lasers Based on Quasi‐2D Perovskites in Green Spectral Region

Keqian Dong, Runkang Lin, Kaige Huang, Shudi Lu, Jingteng Ma, Yipeng Xu, Kong Liu, Jun Liu, Zhanwei Shen, Shizhong Yue, Zhijie Wang, Shengchun Qu

Small· Volume 22· Issue 12
Publisher page

Abstract

Abstract Photonic crystal (PhC) lasers offer significant advantages in terms of wavelength tuning, mode control, and reduction of lasing thresholds, arising from their unique photonic band structure. However, the development of perovskite‐based PhC lasers in the green light band remains a challenging endeavor, limited by factors such as device structural accuracy, material gain, and tolerance. Here, this work demonstrates the fabrication of quasi‐2D perovskite‐based PhC laser exhibiting single‐mode lasing with a narrow linewidth of 0.9 nm, a high Q‐factor of 622, and an ultralow threshold of 10 µJ cm −2 . By precisely adjusting the hole diameter to the period ratio of the PhC structure, broadband wavelength tuning is achieved across the green spectral region, spanning 30 nm with an accuracy of 1 nm. Furthermore, both surface and edge emission configurations are observed during wavelength tuning, demonstrating the versatility of this device. These results highlight the versatility and potential of quasi‐2D perovskite‐based PhC lasers for applications in sensing, display, communication, and on‐chip integration.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Coral and Marine Ecosystems Studies · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Solid‐State Optoelectronics Information Technology Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 P. R. China

Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 P. R. China

College of Physical Science and Technology Hebei Normal University of Science and Technology Qinhuangdao 066004 P. R. China

Guangdong‐Hong Kong Joint Laboratory for Water Security Engineering Research Center of Ministry of Education on Groundwater Pollution Control and Remediation Center for Water Research Advanced Institute of Natural Sciences Beijing Normal University Zhuhai 519087 P. R. China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Beijing Municipality

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