The development of two‐dimensional (2D) materials has brought the breakthrough for scientific discoveries and widespread applications in many emerging devices. However, the related study on lasers is rather limited. In this study, a stretchable and broadband cavity‐free laser device based on all 2D metamaterials consisting of molybdenum disulfide (MoS₂)/graphene nanocomposites is designed and demonstrated. When the pumping power density of the device is more than 200 W cm⁻², multiple pronounced narrow peaks with linewidth <0.5 nm superimpose on the spectra, providing the signature for laser actions. The optical properties of MoS₂/graphene meta‐nanocomposites for MoS₂ quantum dots (QDs) with different concentration of l‐histidine doping are also examined. It is emphasized that under optimized doping concentration of MoS₂ QDs, the laser action of the device can be effectively enhanced. Furthermore, it is shown that the laser action of the devices is controllable by applying an external strain. It is demonstrated that after stretching for more than 200 times, the performance still remains the same with negligible change, indicating the robustness of the device. The presented stretchable laser devices based on all 2D meta‐nanocomposites therefore can open new possibilities for future developments of not‐yet realized optoelectronic devices.

中文翻译：

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基于所有二维超材料的可拉伸宽带无腔激光器

二维（2D）材料的开发为科学发现和在许多新兴设备中的广泛应用带来了突破。但是，有关激光的相关研究相当有限。在这项研究中，设计并演示了一种基于所有由二硫化钼（MoS ₂）/石墨烯纳米复合材料组成的二维超材料的可拉伸且无宽带腔的激光设备。当设备的泵浦功率密度大于200 W cm ^-2时，线宽<0.5 nm的多个明显的窄峰叠加在光谱上，为激光作用提供了特征。MoS ₂ /石墨烯亚纳米复合物对不同l浓度的MoS ₂量子点（QDs）的光学性质还检查了组氨酸的掺杂。要强调的是，在优化的MoS ₂ QD掺杂浓度下，可以有效地增强器件的激光作用。此外，示出了通过施加外部应变可控制装置的激光作用。已经证明，在拉伸200倍以上之后，性能仍然保持不变，变化可忽略不计，表明该设备的坚固性。因此，提出的基于所有2D亚纳米复合材料的可拉伸激光设备可以为尚未实现的光电设备的未来发展开辟新的可能性。