Metal halide perovskites are an excellent direct-bandgap semiconductor material that can possess high optical gain for laser and amplifier applications. Engineering light–matter interactions in perovskites by using a circular Bragg cavity holds great promise for high-performance on-chip photonic sources. Here, we report our development of an etchless fabrication method for perovskite active photonics with an experimental demonstration of circular Bragg lasers in quasi-2D Dion–Jacobson-phase perovskites. The demonstrated perovskite lasers exhibit excellent performance including a low lasing threshold of 8 μJ/cm² and a record-high quality factor of ∼1.2 × 10⁴. These laser devices have excellent stability due to the adoption of the Dion–Jacobson-phase perovskite and material-compatible fabrication processing. This work opens a new avenue to large-area, single-mode surface-emitting perovskite lasers and also provides a new platform for perovskite integrated photonics.

中文翻译：

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具有超高 Q 因子的无蚀 Dion-Jacobson 相钙钛矿表面发射圆形布拉格激光器


金属卤化物钙钛矿是一种出色的直接带隙半导体材料，可为激光和放大器应用提供高光增益。通过使用圆形布拉格腔在钙钛矿中设计光-物质相互作用，为高性能片上光子源带来了巨大的前景。在这里，我们报告了我们开发的钙钛矿活性光子学的无蚀刻制造方法，并在准 2D Dion-Jacobson 相钙钛矿中演示了圆形布拉格激光器。所展示的钙钛矿激光器表现出优异的性能，包括 8 μJ/cm² 的低激光阈值和 ∼1.2 × 10⁴ 的创纪录高品质因数。由于采用了 Dion-Jacobson 相钙钛矿和材料兼容的制造加工，这些激光器件具有出色的稳定性。这项工作为大面积、单模表面发射钙钛矿激光器开辟了一条新途径，也为钙钛矿集成光子学提供了新的平台。