A long working distance optical microscope for synchrotron infrared and Raman microspectroscopy

IF 3.1 3区物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION

Infrared Physics & Technology Pub Date : 2025-03-16 DOI:10.1016/j.infrared.2025.105818

Jiluan Zhang , Shiyu Xie , Liangxin Qiao, Chuansheng Hu, Hengjie Liu, Zeming Qi

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Abstract

A long working distance optical microscope was developed at the infrared beamline on National Synchrotron Radiation Laboratory to address the increasing demand infrared microspectroscopy under external fields (temperature, pressure etc.) and in-situ/operando conditions. This microscope is configured with a pair of 15 × Schwarzschild objectives with 45 mm working distance and a numerical aperture (NA) of 0.5 for transmission and reflection infrared micro-spectrum measurements. The utilization of a high-brightness synchrotron infrared light source ensures the attainment of diffraction-limited spatial resolution along with an excellent signal-to-noise ratio. In addition, the system integrates a Raman microscope, allowing for combined infrared and Raman microspectroscopic measurements without reloading the sample, ensuring that measurements are made under the same sample conditions. The versatile optical microscope offers a powerful tool for combining synchrotron infrared and Raman microspectroscopy measurements of microscale samples under various external fields such as high pressure, low temperature, as well as in-situ/operando chemical reactions. Consequently, it provides a flexible research platform for the study of condensed matter physics, energy and catalysis, materials science, geology, polymer and other related research fields.

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用于同步加速器红外和拉曼显微光谱的长工作距离光学显微镜

为解决外场（温度、压力等）和原位/操作条件下红外微光谱分析日益增长的需求，在国家同步辐射实验室红外光束线上研制了一种长工作距离光学显微镜。该显微镜配置一对15 ×史瓦西物镜，工作距离为45 mm，数值孔径（NA）为0.5，用于透射和反射红外微光谱测量。高亮度同步红外光源的利用确保了衍射受限空间分辨率的实现以及良好的信噪比。此外，该系统集成了一个拉曼显微镜，允许结合红外和拉曼显微光谱测量，而无需重新加载样品，确保在相同的样品条件下进行测量。多功能光学显微镜提供了一个强大的工具，结合同步红外和拉曼显微光谱测量在各种外场，如高压，低温，以及原位/操作化学反应下的微尺度样品。从而为凝聚态物理、能源与催化、材料科学、地质、聚合物等相关研究领域的研究提供了一个灵活的研究平台。

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

Infrared Physics & Technology 物理-光学

CiteScore

5.70

自引率

12.10%

发文量

400

审稿时长

67 days

期刊介绍： The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.