Laser Interferometer

Photonics Tech Briefs INSIDER

4D Technology Corporation (Tucson, AZ) has introduced its newly improved AccuFiz compact laser interferometer for accurate, repeatable measurement of surface shape and transmitted wavefront quality. New features include long- range wireless remote control, motorized tip-tilt and a variable sensitivity alignment system. The wireless remote provides control over instrument set- up, data acquisition and the motorized tip-tilt, for precise system adjustment without disturbing the cavity. The improved alignment system makes it easy to align weakly reflecting samples and high-loss cavities, even in high ambient lighting conditions. The new Surface Isolation Source option adds a second, external laser source to measure plane parallel optical surfaces, without the need for messy coatings or back-surface treatments to eliminate unwanted reflections.