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The Strain-Modulated Single-Mode Laser of Perovskite Microsheets with Grooves on Ultrathin Flexible Mica
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2022-07-19 , DOI: 10.1002/lpor.202200222 Jian Zhang 1, 2 , Xinle Lu 1 , Liaoxin Sun 1, 2 , Qingquan Liu 1, 2, 3, 4 , Xinchao Zhao 1, 2, 4 , Lei Ma 1 , Anping Ge 1, 2 , Shaowei Wang 1, 2, 4 , Xuechu Shen 1, 2, 3, 4 , Wei Lu 2, 3, 4
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2022-07-19 , DOI: 10.1002/lpor.202200222 Jian Zhang 1, 2 , Xinle Lu 1 , Liaoxin Sun 1, 2 , Qingquan Liu 1, 2, 3, 4 , Xinchao Zhao 1, 2, 4 , Lei Ma 1 , Anping Ge 1, 2 , Shaowei Wang 1, 2, 4 , Xuechu Shen 1, 2, 3, 4 , Wei Lu 2, 3, 4
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Inorganic perovskites have become a widely investigated candidate for fabrication of high-performance micro-devices due to their excellent optoelectronic properties and stability to the environment. Especially, their excellent lasing characteristics as a micro/nanolaser source, combined with flexible substrates, have great potential in the field of wearable or foldable photonic device applications. Here, the high-quality CsPbBr3 perovskite microsheets with stress-induced grooves are directly prepared on the ultrathin fluorine mica by the chemical vapor deposition method, and the single-mode lasers are realized in these large-size (>15 × 15 µm) microsheets. Thanks to the flexibility of mica, bending induced tensile strain on CsPbBr3 microsheet causes the laser mode blueshift continuously and reversibly with 15.3 meV %−1, this can be well explained by the Lorentz oscillator model under lasing conditions. Furthermore, by using the first-principles calculation, it is clarified that the bandedge blueshift originates from the distortion of {PbBr6}4− octahedra and the consequential increase of the bond length of Pb-Br3 and the Pb-Br3-Pb bond angle. This work opens up a new way to realize on-chip single-mode lasers with microstructures, and is helpful for the application of flexible photonic device in the fields of integrated on-chip sensors.
中文翻译：
超薄柔性云母上带凹槽的钙钛矿微片的应变调制单模激光器
无机钙钛矿因其优异的光电性能和对环境的稳定性而成为制造高性能微型器件的广泛研究的候选材料。特别是，它们作为微纳激光源的优异激光特性，结合柔性基板，在可穿戴或可折叠光子器件应用领域具有巨大潜力。在这里，通过化学气相沉积法在超薄氟云母上直接制备了具有应力诱导槽的高质量CsPbBr 3钙钛矿微片，并在这些大尺寸（>15×15 µm）中实现了单模激光器。缩微表。由于云母的柔韧性，CsPbBr 3上的弯曲引起的拉伸应变微片以 15.3 meV % -1连续和可逆地导致激光模式蓝移，这可以通过激光条件下的洛伦兹振荡器模型很好地解释。此外，通过使用第一性原理计算，阐明了带边蓝移源于{PbBr 6 } 4-八面体的畸变以及Pb-Br 3和Pb-Br 3 -Pb的键长的相应增加键角。该工作为实现具有微结构的片上单模激光器开辟了一条新途径，有助于柔性光子器件在集成片上传感器领域的应用。
更新日期：2022-07-19
中文翻译：
超薄柔性云母上带凹槽的钙钛矿微片的应变调制单模激光器
无机钙钛矿因其优异的光电性能和对环境的稳定性而成为制造高性能微型器件的广泛研究的候选材料。特别是，它们作为微纳激光源的优异激光特性，结合柔性基板，在可穿戴或可折叠光子器件应用领域具有巨大潜力。在这里，通过化学气相沉积法在超薄氟云母上直接制备了具有应力诱导槽的高质量CsPbBr 3钙钛矿微片，并在这些大尺寸（>15×15 µm）中实现了单模激光器。缩微表。由于云母的柔韧性，CsPbBr 3上的弯曲引起的拉伸应变微片以 15.3 meV % -1连续和可逆地导致激光模式蓝移，这可以通过激光条件下的洛伦兹振荡器模型很好地解释。此外，通过使用第一性原理计算，阐明了带边蓝移源于{PbBr 6 } 4-八面体的畸变以及Pb-Br 3和Pb-Br 3 -Pb的键长的相应增加键角。该工作为实现具有微结构的片上单模激光器开辟了一条新途径，有助于柔性光子器件在集成片上传感器领域的应用。
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