Tunable Opto-Chemical Virtual Aperture Induced by Azobenzene Cis-Trans Isomerization

IF 2.5 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-04-23 DOI:10.1109/LPT.2025.3563501

Yixuan Chen;Xi Xie;Changjun Min;Yuquan Zhang;Xiaocong Yuan

引用次数: 0

Abstract

This letter presents an innovative approach utilizing the optical isomerization of azobenzene polymer films, which markedly diminishes the spatial dimensions of the focused light spot. By manipulating the power ratio of two distinct wavelengths of laser, the light-induced alignment of azobenzene molecules within the polymer film can be modified, thereby enabling the development of an “opto-chemical virtual aperture” that effectively reduces the size of the focused light spot. Simulations assess the direct impact of laser power ratios on the orientation of azobenzene molecules, while the experimental findings indicate significant variations in the dimensions of the light spot in response to these changes. The validation of the fundamental characteristics of azobenzene is crucial for the progression of optical micromachining techniques beyond the diffraction limit and for advancements in near-field optical manipulation

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偶氮苯顺反异构化诱导的可调光化学虚拟孔径

这封信提出了一种利用偶氮苯聚合物薄膜的光学异构化的创新方法，该方法显着减小了聚焦光斑的空间尺寸。通过控制两种不同波长激光的功率比，可以修改聚合物薄膜内偶氮苯分子的光致排列，从而实现“光化学虚拟孔径”的开发，有效地减小了聚焦光斑的大小。模拟评估了激光功率比对偶氮苯分子取向的直接影响，而实验结果表明，随着这些变化，光斑的尺寸发生了显著变化。偶氮苯的基本特性的验证对于超越衍射极限的光学微加工技术的发展和近场光学操作的进步至关重要

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.