4D Technology Introduces AccuFiz® Duo Fizeau Interferometer

20 May 2024

High precision, dynamic interferometer combines short and long coherence capabilities into one system for measuring an expanded range of optics.  

4D Technology, a subsidiary of Onto Innovation, announced today the launch of the AccuFiz Duo Fizeau interferometer.  Quantum Design are the exclusive representative for 4D Technology in the UK and Ireland.

The AccuFiz Duo dynamic interferometer uniquely combines the industry leading AccuFiz D short coherence capabilities with long coherence capabilities into a single system.

The AccuFiz Duo’s short coherence mode employs the same patented technology as the AccuFiz D, enabling vibration insensitive, on-axis, dynamic measurement for high accuracy measurement of optical grade surfaces. With a short coherence length source, the AccuFiz Duo measures flats and lenses without the need for coating surfaces to attenuate extraneous interference fringes. This mode enables surface error, transmitted wavefront error, remote cavity, wedge, optical thickness, and homogeneity measurements of plane parallel transparent surfaces down to 0.2mm thick.

The AccuFiz Duo’s additional long coherence source uses a stabilised HeNe laser and operates with all the benefits of a standard phase shifting Fizeau interferometer.  The long coherence mode enables very long cavity measurements and has spatial carrier dynamic mode as an option for vibration and turbulence mitigation.  It is also useful for standard radius of curvature measurements.  The 632.8nm HeNe source facilitates measurements with digital holograms as well. 

https://qd-uki.co.uk/4d-technology-introduces-accufiz-duo-fizeau-interferometer/

MEASURE BROADER RANGE OF OPTICS IN A LAB OR SHOP FLOOR

The AccuFiz Duo, with its vibration insensitive short coherence mode and optional spatial carrier long coherence mode, can operate in environments where other instruments simply cannot. Use the AccuFiz Duo in the lab or right on the shop floor to measure:

• Windows, thin glass, sapphire wafers
• Domes and other curved, transparent components
• Flats, spheres, prisms
• Polished semiconductor components
• Remote cavities
• Solid cavities
• Optical thickness and homogeneity
• Transmission of components and systems
• Rapid alignment of optical systems

https://qd-uki.co.uk/4d-technology-introduces-accufiz-duo-fizeau-interferometer/