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4D Technology's measurement systems

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Laser Physics is now supplying 4D Technology’s new range of products for the measurement of 300mm diameter optics, which have been designed around a standard, 100mm aperture AccuFiz interferometer.

The series of precision components enable measurement of large afocal optics and large diameter curved surfaces (using CGH null optics). The range of 300mm components includes a 100–300mm beam expander, used in horizontal or look-down measurement configurations. The kinematic mounting means the AccuFiz can be removed quickly for free-standing operation, with no re-alignment needed when returning it to the beam expander.

For quick positioning and rapid test setup, 4D Technology complement the range by offering a visible coarse alignment laser.

The 300mm rotational mounts provide highly repeatable tip, tilt and rotation control of the test and reference optics. Precise adjustments enable three-flat testing when high accuracy measurement is required. The external phase shifting mount adds the ability to measure in remote cavity setups.

Components can be adapted for use with other manufacturers' 100mm aperture interferometers.