Product Details

The ZYGO 8070-0159-02 is a discontinued air-cooled two-frequency He-Ne heterodyne laser head of ZYGO 7712 series, specially configured for Canon stepper lithography equipment, matching ZMI 240X and 4X04 series interferometer measurement boards for ultra-precision displacement metrology of wafer positioning stages. It outputs 632.8nm frequency-stabilized laser with two orthogonal linear polarization frequencies, fixed frequency difference of 20MHz ±1600Hz, providing stable beat reference signal for heterodyne interferometer position decoding.

This 7712 variant is customized for Canon FPA5000 and FPA6000 lithography systems, with optimized optical power and frequency stability parameters to adapt to the long-term continuous working environment of the lithography machine. It integrates built-in high-performance optical isolator to prevent laser frequency lock loss and measurement jump caused by reflected light from interferometer optics and retroreflectors. The power supply is ±15VDC and +5VDC, requiring about 25 minutes of warm-up time to reach stable wavelength state for formal metrology work. Multiple 7712 laser heads can be arranged in one multi-axis stage system. Its optical interface and beam specifications are exclusive to the 7712 model, not interchangeable with 7702 series laser heads and matching optical accessories.

It is equipped with BNC RF beat output port, laser interlock and temperature monitoring interface. The front panel has power indicator and laser lock status LED for routine inspection and fault diagnosis. The housing adopts vibration damping structure and EMC shielding design to reduce electromagnetic interference from linear motors and servo drivers inside cleanroom lithography equipment. Users must confirm the full part number 8070-0159-02 and 7712 model before replacement, and match the supporting interferometer optics, retroreflectors and compatible ZMI measurement boards. This legacy ZYGO 8070-0159-02 laser head is mainly supplied as spare replacement parts for old Canon stepper systems. Users need to verify optical power, frequency difference and optical path consistency before installation. A conformal coated version is optional for high humidity and dusty industrial sites. This laser head is widely used in maintenance and renovation of legacy Canon lithography machines, nanometer closed-loop motion feedback of wafer stages.

This two-frequency He-Ne laser head adopts standalone compact housing structure. It requires ±15VDC and +5VDC power supply. LED indicators display power and laser lock status for convenient on-site inspection. The optimal operating temperature range is 15°C to 30°C, storage temperature ranges from -40°C to +85°C, relative humidity 5% to 50% non-condensing. It complies with industrial shock, vibration and EMC standards and has CE certifications. It supports optical path calibration backup for fast recovery after hardware replacement.

This ZYGO 8070-0159-02 laser head is widely applied in high-precision laser interferometer measurement systems for Canon lithography equipment. It provides stable two-frequency laser source for ZMI 240X and 4X04 series measurement boards. As a reliable spare part for ZYGO legacy metrology systems, the ZYGO 8070-0159-02 retains original heterodyne frequency characteristics and optical compatibility, helping customers reduce maintenance cost of legacy ultra-precision measurement equipment.