Adl Hamid Pashaei, Sánchez-Díaz Jesús, Vescio Giovanni, Cirera Albert, Garrido Blas, Pacheco Felipe Andres Vinocour, Żuraw Wiktor, Przypis Łukasz, Öz Senol, Mora-Seró Iván, Martínez-Pastor Juan P, Suárez Isaac
UMDO+, Instituto de Ciencia de los Materiales, University of Valencia, Valencia, 46980, Spain.
Institute of Advanced Materials (INAM), Jaume I University, Castelló de la Plana, 12006, Spain.
Adv Mater. 2024 Jun;36(24):e2313252. doi: 10.1002/adma.202313252. Epub 2024 Mar 14.
The development of random lasing (RL) with predictable and controlled properties is an important step to make these cheap optical sources stable and reliable. However, the design of tailored RL characteristics (emission energy, threshold, number of modes) is only obtained with complex photonic structures, while the simplest optical configurations able to tune the RL are still a challenge. This work demonstrates the tuning of the RL characteristics in spin-coated and inkjet-printed tin-based perovskites integrated into a vertical cavity with low quality factor. When the cavity mode is resonant with the photoluminescence (PL) peak energy, standard vertical lasing is observed. More importantly, single mode RL operation with the lowest threshold and a quality factor as high as 1 000 (twenty times the quality factor of the resonator) is obtained if the cavity mode lies above the PL peak energy due to higher gain. These results can have important technological implications toward the development of low-cost RL sources without chaotic behavior.
开发具有可预测和可控特性的随机激光（RL）是使这些廉价光源稳定可靠的重要一步。然而，定制RL特性（发射能量、阈值、模式数量）的设计只能通过复杂的光子结构来实现，而能够调谐RL的最简单光学配置仍然是一个挑战。这项工作展示了在集成到低品质因数垂直腔中的旋涂和喷墨打印锡基钙钛矿中对RL特性的调谐。当腔模与光致发光（PL）峰值能量共振时，会观察到标准的垂直激光发射。更重要的是，如果由于增益较高，腔模位于PL峰值能量之上，则可实现具有最低阈值和高达1000的品质因数（谐振器品质因数的20倍）的单模RL运行。这些结果对于开发无混沌行为的低成本RL源可能具有重要的技术意义。
