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Device for preventing intensity reduction of optical signal, optical emission spectrometer, optical instrument, and mass spectrometer including the same
Device for preventing intensity reduction of optical signal, optical emission spectrometer, optical instrument, and mass spectrometer including the same
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机译:防止光信号强度降低的装置,光发射光谱仪,光学仪器以及包括该仪器的质谱仪
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摘要
A device for a device for preventing the intensity reduction of an optical signal, an optical emission spectrometer, an optical instrument, and a mass spectrometer including the same are provided. The device for preventing the intensity reduction includes a shielding filter which has a mesh structure capable of blocking RF electromagnetic waves radiated from a plasma field for a wafer processing, is installed in the front of an optical window of an optical emission spectrometer for measuring the plasma field from an emission spectrum image of the plasma field, and collects charging particles passing through the mesh.
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