Affiliation:
1. State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra‐Intense Laser Science Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China
2. Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China
3. Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China
4. Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou 310024 China
Abstract
AbstractGreat research efforts are devoted to exploring the miniaturization of chip‐scale coherent light sources possessing excellent lasing performance. Despite the indispensable role in Si photonics, SiO2 is generally considered not contributing to the starting up and operation of integrated lasers. Here, this work demonstrates an extraordinary‐performance subwavelength‐scale perovskite vertical cavity laser with all‐transparent SiO2 cavity, whose cavity is ultra‐simple and composed of only two parallel SiO2 plates. By introducing a ligand‐assisted thermally co‐evaporation strategy, highly luminescent perovskite film with high reproducibility and excellent optical gain is grown directly on SiO2. Benefitting from their high‐refractive‐index contrast, low‐threshold, high‐quality factor, and single‐mode lasing is achieved in subwavelength range of ≈120 nm, and verified by long‐range coherence distance (115.6 µm) and high linear polarization degree (82%). More importantly, the subwavelength perovskite laser device could operate in water for 20 days without any observable degradation, exhibiting ultra‐stable water‐resistant performance. These findings would provide a simple but robust and reliable strategy for the miniaturized on‐chip lasers compatible with Si photonics.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Natural Science Foundation of Hubei Province
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science