Direction-Decoupled Light-Emitting Metasurface via Guided-Photoluminescence Manipulation

IF 18.5 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Functional Materials Pub Date : 2024-11-20 DOI:10.1002/adfm.202415823

Zejing Wang, Shuai Wan, Chenjie Dai, Zhe Li, Zhongyang Li

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Abstract

On-demand manipulation of light emissions is crucial for a variety of practical applications, including bio-imaging and optical display, etc. Within this realm, the invention of metasurfaces provides powerful light–matter interaction capabilities for the control of multitudinous emission parameters. However, due to the omnidirectional, random, and incoherent nature of photoluminescence (PL) emission, the multiplexing modulation of PL remains a challenge and is rarely realized. Here, a direction-decoupled light-emitting metasurface (LEM) is originally demonstrated to display dual-channel independent incoherent-emission images based on guided-PL manipulation. Utilizing the wavevector differences of guided-PL between opposite pumping directions, the LEM is designed to enable selective unidirectional emission, thereby decoupling the directional freedom for PL multiplexing and realizing dual meta-display. Besides, the direction-multiplexed LEM can be integrated simultaneously with pumping-light holography for multi-dimensional meta-display. Such programmable unidirectional emission manipulation and direction-multiplexed PL meta-display approaches promise light-emitting techniques and can potentially find applications in multiplexing display, optical storage and encryption, etc.

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通过光致发光操纵实现方向耦合发光元表面

按需操纵光发射对生物成像和光学显示等各种实际应用至关重要。在这一领域，元表面的发明为控制多种发射参数提供了强大的光-物质相互作用能力。然而，由于光致发光（PL）发射的全向性、随机性和非相干性，光致发光的多路复用调制仍然是一个挑战，而且很少实现。在此，我们首次展示了一种方向解耦发光元表面（LEM），它可以在引导光致发光操纵的基础上显示双通道独立非相干发射图像。利用相反泵浦方向之间的导波发光波矢差异，LEM 被设计成能够实现选择性单向发射，从而解耦发光复用的方向自由度并实现双元显示。此外，方向复用 LEM 可与抽运光全息技术同时集成，实现多维元显示。这种可编程的单向发射操纵和方向多路复用聚光元显示方法是一种前景广阔的发光技术，有望应用于多路复用显示、光存储和加密等领域。

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来源期刊

Advanced Functional Materials 工程技术-材料科学：综合

CiteScore

29.50

自引率

4.20%

发文量

2086

审稿时长

2.1 months

期刊介绍： Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.