Room‐temperature, low‐threshold, photostable, cost‐effective, efficient, miniaturized, and all‐solid‐state lasers are highly desirable in many technological and medicinal applications. Here, an archetypical dye laser is introduced, with the above attributes, based on single‐crystalline microplates of a dye‐coordinated metal–organic framework (MOF) without an external cavity, holding a potential to be the next‐generation laser. With an exciton–polariton lasing mechanism combined with large multiphoton absorption cross sections, the lasing thresholds of the three microplates are in the range from 0.34 to 0.12 µJ cm⁻² under various optical pumping schemes. The lasing threshold is observed to be reduced with an increment in the order of optical nonlinearity involved in the pumping scheme. Lasing at an extreme‐red region is demonstrated, with a high photostability (with a drop in lasing output as low as 25% after 1.8 × 10⁶ cycles), a large degree of polarization (up to 92%), and an excellent conversion efficiency (up to 12%), thereby realizing a crucial milestone in the field of laser technology.

中文翻译：

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染料配位的金属-有机骨架单晶的多光子泵浦高偏振极化微激光。

在许多技术和医学应用中，非常需要室温，低阈值，光稳定，经济高效，高效，小型化和全固态激光器。在此，介绍一种具有上述属性的原型染料激光器，它是基于染料配位的金属-有机骨架（MOF）的单晶微板而没有外腔，具有成为下一代激光器的潜力。通过激子-极化子激射机制与大的多光子吸收截面相结合，三个微孔板的激射阈值在0.34至0.12 µJ cm ^-2的范围内在各种光泵浦方案下。观察到激射阈值以泵浦方案中涉及的光学非线性的顺序增加而减小。演示了在极端红色区域的激光发射，具有高的光稳定性（1.8×10 ⁶个周期后激光输出的下降可低至25％），高度偏振（高达92％）和出色的转换效率（高达12％），从而在激光技术领域实现了至关重要的里程碑。