Quasi-bound states in the continuum for efficient second harmonic generation and spatial phase tailoring in GaAs metasurfaces (B09*)

连续体中的准束缚态可在 GaAs 超表面中实现高效二次谐波生成和空间相位调整 (B09*)

• 批准号: 495978984
• 金额: --
• 依托单位: Ultrafast Nanophotonics Group
• 依托单位国家: 德国
• 项目类别: CRC/Transregios
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/495978984?language=en
• 关键词: Quasi; bound; states; continuum; efficient

In this project, we aim at exploiting highly efficient quasi-bound states in the continuum for optical modes in GaAs nanoresonators. The strong field confinement of these modes will be utilized to tailor the phase and emission patterns of light generated by nonlinear optical processes and to increase the efficiency of light-matter interaction in novel nonlinear optoelectronic devices. By using GaAs as material, we will make use of a strong second-order effect to target efficient harmonic generation and nonlinear holography even at lower power levels. Such a system would be of particular interest for optical security applications and nonlinear flat optical beam shaping elements.

在这个项目中，我们的目标是利用高效的准束缚态在连续的GaAs纳米谐振器中的光学模式。这些模式的强场限制将被用来定制由非线性光学过程产生的光的相位和发射模式，并提高新型非线性光电器件中光-物质相互作用的效率。通过使用GaAs作为材料，我们将利用强大的二阶效应，即使在较低的功率水平下也能实现高效的谐波产生和非线性全息。这种系统对于光学安全应用和非线性平坦光束成形元件将是特别感兴趣的。