The Verifire™ XL interferometer is a stand-alone workstation designed for simplistic and reliable metrology of large flat surfaces up to twelve inches (300 mm) in diameter. Examples include front-surface reflectors, windows, and semiconductor wafers or wafer chucks. This fully integrated system is easy to use, with a heavy duty tip/tilt stage that provides repeatable part placement without the need for custom fixturing. The compact footprint, with built-in vibration isolation, requires minimal production floor space. The Verifire XL system includes ZYGO's patented QPSI™ acquisition technology which enables reliable high-precision measurements in the presence of vibration. QPSI enables true on-axis surface form metrology, without degradation from typical production vibrations. The high-performance transmission flat in the Verifire XL system is designed for minimal sensitivity to gravitational sag, and includes a full-area calibration file to enable optimum system accuracy.

Precision measuring instruments
  • large aperture interferometer
  • precision surface form metrology
  • optical testing