是德科技干涉仪系统中使用的是德科技5501B激光头，其真空波长精度（3σ，寿命）为0.1 ppm，标准光束直径为6 mm。激光头使用久经考验的长寿命激光管，并包括参考接收器和高压电源。5501B是Keysight 5501A激光头的直接替代产品。5517系列激光头应考虑用于新应用。
Keysight 5501B配置有适当的光学器件和系统电子器件，以构建满足各个应用程序独特的物理布局和测量要求的激光干涉仪系统。定制定位系统提高了产品质量，提高了产量并促进了精密产品的制造。
The Keysight 5501B laser head, used in Keysight interferometer systems, offers a vacuum wavelength accuracy (3 &sigma, lifetime) of 0.1 ppm, and a standard beam diameter of 6 mm. The laser head uses a proven long-life laser tube and includes a reference receiver and high voltage power supply. The 5501B is a drop-in replacement for the Keysight 5501A laser head. The 5517 family of laser heads should be considered for new applications.
The Keysight 5501B is configured with appropriate optics and system electronics to build a laser interferometer system that meets the unique physical layout and measurement requirements of individual applications. The custom positioning system improves product quality, increases yields, and facilitates manufacture of precision products.
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