title: Holographic Twyman-Green interferometer.
abstract: A dichromated gelatin off-axis Fresnel zone plate (OFZP) was designed, fabricated, and used in a new type of interferometer for optical metrology. This single hologram optical element combines the functions of a beam splitter, beam diverger, and aberrated null lens. Data presented show the successful application for an interferometric test of an f/6, 200-mm diam parabolic mirror.
authors.forename: C W
authors.initials: CW
authors.lastname: Chen
authors.forename: J B
authors.initials: JB
authors.lastname: Breckinridge