利用无序腔对铌酸锂薄膜进行超高分辨率重构光谱仪

IF 6.5 1区 物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Xijie Wang, Ziliang Ruan, Gengxin Chen, Shengqi Gong, Zexu Wang, Kaixuan Chen, Liu Liu
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引用次数: 0

摘要

集成光谱仪为便携式设备的光谱测量提供了独特的优势。虽然重建光谱仪克服了传统设计的带宽与分辨率之间的权衡,但它们通常需要复杂的电气控制或空间采样。在这里,我们提出并演示了一种基于斑点的薄膜铌酸锂光谱仪,利用单驱动逻辑和单光电探测器。利用螺旋波导中无序多模波导光栅谐振腔的随机反射,我们实现了稀疏光谱的超高分辨率为1 pm,在5 nm光谱范围内的理论分辨率为6 pm,同时在扫描速率为10 Hz时保持了7.21 μW的超低功耗和0.453 μJ的能耗。此外,我们演示了在±5 V的低压驱动下,使用神经网络算法在100 kHz下进行高速频谱识别。这项工作提出了一种节能、高速和超高分辨率的光谱分析解决方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Ultrahigh Resolution Reconstructive Spectrometer Using a Disordered Cavity on Thin-Film Lithium Niobate

Ultrahigh Resolution Reconstructive Spectrometer Using a Disordered Cavity on Thin-Film Lithium Niobate
Integrated spectrometers offer unique advantages for spectral measurements in portable devices. While reconstructive spectrometers overcome the bandwidth-to-resolution trade-off of traditional designs, they often require complex electrical control or spatial sampling. Here, we propose and demonstrate a speckle-based spectrometer on thin-film lithium niobate, utilizing single-drive logic and a single photodetector. By leveraging the random reflections of a disordered multimode waveguide grating resonant cavity in a spiral waveguide, we achieve an ultrahigh resolution of 1 pm for sparse spectra and a theoretical resolution of 6 pm within a 5 nm spectral range, while maintaining an ultralow power consumption of 7.21 μW and an energy consumption of 0.453 μJ at a scan rate of 10 Hz. Furthermore, we demonstrate high-speed spectral recognition at 100 kHz under a low-voltage drive of ±5 V using a neural network algorithm. This work presents an energy-efficient, high-speed, and ultrahigh-resolution solution for spectral analysis.
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来源期刊
ACS Photonics
ACS Photonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
11.90
自引率
5.70%
发文量
438
审稿时长
2.3 months
期刊介绍: Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.
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