Product Details

The ZYGO 7714, part number 8070-0278-11, is a specific hardware revision variant of discontinued water-cooled two-frequency He-Ne heterodyne laser head in ZMI series, designed to match ZMI 240X and 4X04 series interferometer measurement boards for high-end semiconductor lithography, ultra-precision wafer stage positioning and multi-channel optical metrology systems. Compared with air-cooled 7702, it adopts water cooling architecture to deliver outstanding frequency stability, suitable for long-running ultra-precision measurement applications with strict drift control requirements. It outputs 632.8nm stabilized laser with two orthogonal linear polarization frequencies, fixed frequency difference of 20MHz ±1600Hz, supplying the required beat reference signal for heterodyne interferometer position decoding.

This revision 8070-0278-11 features high optical power output, a single laser head can support more measurement axes than 7702. It integrates built-in high-performance optical isolator to protect laser cavity from back reflection of interferometer optics and retroreflectors, effectively preventing frequency lock loss and measurement jump. It is equipped with BNC RF beat output port, laser interlock interface and temperature monitoring port for real-time laser health status tracking. The power supply requirement is ±15VDC and +5VDC, together with matched circulating cooling water system. It needs sufficient warm-up time to reach stable wavelength state for formal metrology. Multiple ZYGO 7714 8070-0278-11 laser heads can be deployed in one large multi-stage positioning system.

The front panel is fitted with power indicator and laser lock status LED for routine inspection and fault diagnosis. The housing uses reinforced vibration damping structure and full EMC shielding to resist electromagnetic noise interference generated by linear motors and servo drivers in cleanroom environments. Users must confirm the full part number 8070-0278-11 before installation, match the corresponding interferometer optics, retroreflectors and compatible ZMI measurement boards. Its beam accessories are not interchangeable with 7702 series. This legacy ZYGO 7714 8070-0278-11 laser head is mainly supplied as spare replacement parts for existing ZMI metrology systems. Users need to inspect optical power, frequency difference and cooling loop condition before replacement. A conformal coated version is optional for high humidity and dusty industrial sites. This laser head is widely used in legacy multi-axis laser interferometer system retrofit, high-precision wafer scanner positioning and sub-nanometer closed-loop motion feedback projects.

This water-cooled two-frequency He-Ne laser head adopts standalone heavy-duty housing structure. It requires ±15VDC, +5VDC power supply and water cooling loop. LED indicators display power and laser lock status for convenient on-site inspection. The optimal operating temperature range is 18°C to 24°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 7714 8070-0278-11 laser head is widely applied in high-precision laser interferometer measurement systems. It provides ultra-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 7714 8070-0278-11 retains original heterodyne frequency characteristics and optical compatibility, helping customers reduce maintenance cost of legacy ultra-precision measurement equipment.