AMAT 0040-62681
Product Name: Helium-Neon (HeNe) Reference Laser Interferometer Product Introduction: This is a precision optical metrology component used for alignment and distance measurement within semiconductor tools. The HeNe laser generates a coherent red beam (632.8 nm) with exceptional stability. It is used in interferometry systems to measure wafer position, focus height, and robot arm positioning with sub-micron accuracy. The unit typically includes the laser tube, power supply, optics (mirrors, beam splitters), and detectors. It ensures that the wafer is positioned exactly at the focal point of the processing optics or within the plasma sheath.








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