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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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.