Department of Engineering, University of Cambridge, Cambridge CB3 0FA, UK.
College of Information Science and Electronic Engineering, State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China.
Science. 2021 Jan 29;371(6528). doi: 10.1126/science.abe0722.
Spectroscopic analysis is one of the most widely used analytical tools in scientific research and industry. Although laboratory benchtop spectrometer systems offer superlative resolution and spectral range, their miniaturization is crucial for applications where portability is paramount or where in situ measurements must be made. Advancement in this field over the past three decades is now yielding microspectrometers with performance and footprint near those viable for lab-on-a-chip systems, smartphones, and other consumer technologies. We summarize the technologies that have emerged toward achieving these aims-including miniaturized dispersive optics, narrowband filter systems, Fourier transform interferometers, and reconstructive microspectrometers-and discuss the challenges associated with improving spectral resolution while device dimensions shrink ever further.
光谱分析是科学研究和工业中最广泛使用的分析工具之一。虽然实验室台式光谱仪系统提供了卓越的分辨率和光谱范围，但它们的小型化对于需要便携性或必须进行原位测量的应用至关重要。在过去的三十年中，这一领域的进展现在正在产生性能和占地面积接近可用于芯片实验室系统、智能手机和其他消费技术的微型光谱仪。我们总结了实现这些目标的技术，包括小型化的分光光学元件、窄带滤光系统、傅里叶变换干涉仪和重构微型光谱仪，并讨论了在设备尺寸不断缩小的情况下如何提高光谱分辨率的相关挑战。
