Manipulation of laser emission offers promising opportunities for the generation of new spatial dimensions and applications, particularly in nanophotonics, super‐resolution imaging, and data transfer devices. However, the ability to control laser modes and wavelength in a microcavity remains challenging. Here, a novel approach is demonstrated to control laser modes by manipulating the 3D‐optical confinement, chirality, and orientations in a Fabry−Pérot microcavity with cholesteric liquid crystal droplets. Different configurations of intracavity micro‐/nanostructures generate versatile dimensions of laser modes, while the significantly reduced laser mode volume further leads to single‐mode lasing. Theoretical analysis is carried out to support this interesting discovery. Finally, switchable lasing wavelength with various surface anchoring forces and pH interactions is demonstrated. This novel concept not only provides a simple yet highly versatile method to manipulate laser emissions, but deepens insight into how molecules interact with and modulate laser light, laying the foundation for the development of tunable photonic devices at the molecular level. Promising applications include highly selective laser devices, laser‐emission imaging, and bioinspired sensing.

中文翻译：

---

腔内球形手性液晶对微激光器的可调性

操纵激光发射为产生新的空间尺寸和应用提供了有希望的机会，尤其是在纳米光子学，超分辨率成像和数据传输设备中。然而，在微腔中控制激光模式和波长的能力仍然具有挑战性。在这里，一种新颖的方法被证明可以通过控制具有胆甾型液晶液滴的Fabry-Pérot微腔中的3D光学限制，手性和方向来控制激光模式。腔内微/纳米结构的不同配置可产生多种尺寸的激光模式，而大大减小的激光模式体积则进一步导致了单模激光。进行理论分析以支持这一有趣的发现。最后，证明了具有各种表面锚定力和pH相互作用的可切换激光波长。这个新颖的概念不仅提供了一种简单但用途广泛的方法来操纵激光发射，而且加深了对分子如何与激光相互作用和调制激光的认识，为在分子水平上开发可调谐光子器件奠定了基础。有希望的应用包括高度选择性的激光设备，激光发射成像和生物启发式传感。