Laser Processing Group, Instituto de Óptica, CSIC, C/ Serrano 121, 28006 Madrid, Spain.
Appl Spectrosc. 2012 Aug;66(8):970-8. doi: 10.1366/12-06612. Epub 2012 Jul 13.
Intensified charge-coupled devices (ICCD) are used in a great variety of spectroscopic applications, some of them requiring high sensitivity and spectral resolution. The setup, configuration, and featuring of these cameras are fundamental issues in order to acquire high quality spectra. In this work a critical assessment of these detectors is performed and the specific configuration, the optical alignment, featuring, and the dark and shot noise are described and analyzed. Spatial response of the detector usually shows a significant lack of spatial homogeneity and a map of interferences may appear in certain ranges of wavelengths, which damages the quality of the recorded spectra. In this work the spectral resolution and the spatial and spectral sensitivity are also studied. The analysis of the dark current reveals the existence of a smooth but clear spatial dependence. As a final conclusion, the spectra registered with the spectrometer equipped with our ICCD camera allow us to explore and measure accurately spectral line shapes emitted by pulsed plasmas in the visible range and particularly in the ultraviolet (UV) range.
增强型电荷耦合器件（ICCD）广泛应用于各种光谱学应用中，其中一些应用需要高灵敏度和光谱分辨率。为了获得高质量的光谱，这些相机的设置、配置和特点是基本问题。在这项工作中，对这些探测器进行了严格的评估，并对特定的配置、光学对准、特点、暗噪声和散粒噪声进行了描述和分析。探测器的空间响应通常表现出明显的空间非均匀性，并且在某些波长范围内可能会出现干涉图，这会损害记录光谱的质量。在这项工作中，还研究了光谱分辨率以及空间和光谱灵敏度。暗电流的分析揭示了存在平滑但明显的空间依赖性。作为最终结论，使用配备我们 ICCD 相机的光谱仪记录的光谱使我们能够探索和准确测量脉冲等离子体在可见范围内特别是在紫外线（UV）范围内发射的光谱线形状。
