Used ZYGO Laser Interferometer GPI-XP/D Series, Measuring Beam Diameter 4 inches (102mm)

Comprehensive Information on ZYGO 4-inch Laser Interferometer: 

 I. Product Models and Functions ‌GPI-XP/D Series‌ Measurement beam diameter of 4 inches (102mm), utilizing a 632.8nm helium-neon laser, supports curvature radius, surface shape, and transmitted wavefront measurements for flat, spherical, and cylindrical components‌. Repeatability accuracy up to λ/10000 (RMS), CCD resolution of 640×480 pixels, expandable to 1024×1024‌ . Standard lens accuracy: flat lens λ/20, spherical lens λ/10 (F-number coverage from F/0.65 to F/7.1)‌ . ‌Verifire MST‌ Supports multi-parallel surface measurement (3-4 surfaces), separates interference fringes through wavelength modulation technology, suitable for inspection of uncoated parallel plates‌ .

 II. Includes software, lenses, and mounting brackets. High-stability laser source (0.1 nanometer frequency stability). 

III. Technical Parameters ‌Light Source‌: 632.8nm helium-neon laser, coherence length >100 meters‌ 3 . ‌Resolution‌: λ/8000 (approximately 0.0791 nanometers), supports 3180 fringe analysis‌ . ‌Measurement Range‌: Maximum sample size 254×203×203mm‌ .

 IV. Application Scenarios Primarily used for surface shape inspection of optical components (such as lenses, mirrors), suitable for precision manufacturing, aerospace, and other fields‌