*Configuration - S9 LUPI (Twyman Green) Interferometer, LUPI
√1550nm SLM Fiber-coupled Laser (external) /
400nm SLM Fiber-coupled Laser (external), 9mm Aperture,
√Internal adjustment to compensate for high reflectivity parts,
√1/20th Wave Phase-shifting Reference Mirror with
640 x 512 (1550nm) / 1022 x 1022 (400nm) Measurement Camera,
√Shutter Speed (shortest) : 9us
√ Digitization: 8 bits
√ Open Frame with 5-axis mount
√ Multiple Configurations are available (Move the camera/Adjust the
source, Change the reference arm, Adjustable 5-Axis Mount etc.)
√ Measurement Techniques : Operates in both traditional PSI and
Dynamic, vibration insensitive, acquisition modes.
√ Alignment System : Threaded, external on-axis visible laser
√ Image Resolution : 25 μm
√ Image Distortion : <1%, 0.5% typical
√ Fringe Resolution : ~200 fr/aperture
√ Retrace Error3 @ 200 fringes : λ/10
√ RMS Simple Repeatability :<0.6 nm RMS 1σ – with NO averaging
√ RMS Wavefront Repeatability :<0.6 nm RMS 1σ – with NO av