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Accurate wavelength calibration in the near-infrared for multielement analysis without the need for reference spectra

机译:无需参考光谱即可在近红外中进行准确的波长校准以进行多元素分析

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摘要

A new technique has been developed for an instant, precise, and accurate wavelength calibration over a wide pixel array for simultaneous, multielement spectral analysis based on an inverse numerical solution to the grating dispersion function. This technique is applicable to multielement analytical applications such as laser-induced breakdown spectroscopy (LIBS), particularly when using high-density gratings in the upper visible and in the near-infrared, where nonmetallic elements are detected. This application overcomes the need to use reference spectra for each window of observation and is tested on a commercially available LIBS instrument.
机译:基于光栅色散函数的逆数值解,已经开发出一种新技术,可以在宽像素阵列上进行即时,精确和准确的波长校准,以同时进行多元素光谱分析。该技术适用于多元素分析应用,例如激光诱导击穿光谱法(LIBS),尤其是在上部可见光和近红外中使用高密度光栅时,其中检测到非金属元素。该应用克服了对每个观察窗使用参考光谱的需求,并在商用LIBS仪器上进行了测试。

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