论文标题
在亚波长岩石共振器中增强的五光子光致发光
Enhanced five-photon photoluminescence in subwavelength AlGaAs resonators
论文作者
论文摘要
吸收光致发光的多光子过程已实现了广泛的应用，包括三维微分化，数据存储和生物成像。尽管两光子和三光子的吸收和发光的应用已经大大成熟，但由于效率较低，尤其是在亚波长度系统中，高阶光致发光过程的研究仍然更具挑战性。在这里，我们报告了在MIE共振启用的室温下，从单个亚波长纳米annna的五光子发光观察到了五光子发光。我们在3.6 um左右激发了藻类谐振器，并在740 nm左右观察光致发光。我们表明，在亚波长度上，MIE多极模式的相互作用可以至少提高五光子发光的效率至少四个数量级，仅受我们的检测器的敏感性限制。我们的工作铺平了在MIE共振的物理学启用的子波长度量表上迈向高阶多光谱过程的应用。
Multiphoton processes of absorption photoluminescence have enabled a wide range of applications including three-dimensional microfabrication, data storage, and biological imaging. While the applications of two-photon and three-photon absorption and luminescence have matured considerably, higher-order photoluminescence processes remain more challenging to study due to their lower efficiency, particularly in subwavelength systems. Here we report the observation of it five-photon luminescence from a single subwavelength nanoantenna at room temperature enabled by the Mie resonances. We excite an AlGaAs resonator at around 3.6 um and observe photoluminescence at around 740 nm. We show that the interplay of the Mie multipolar modes at the subwavelength scale can enhance the efficiency of the five-photon luminescence by at least four orders of magnitude, being limited only by sensitivity of our detector. Our work paves the way towards applications of higher-order multiphoton processes at the subwavelength scales enabled by the physics of Mie resonances.
