SIOM Establishes Large-Aperture Spherical Shearing Interference Model
Start here
The Shanghai Institute of Optics and Fine Mechanics made progress in large-aperture spherical interferometric wavefront measurement, establishing a theoretical model for spherical wave lateral shearing interference and using a photon-sieve central-obscuration zone plate to match a large-aperture beam with a small-area detector. The team measured window glass with 5-inch and 9-inch zone plates: the transmitted wavefront PV values for the 4-inch sample were 0.0738λ and 0.0735λ, compared with a Zygo result of 0.073λ@632.8nm; the 8-inch sample measured a PV of 0.2288λ, compared with 0.222λ@632.8nm. The results were published in Optics and Laser Technology.
AI-generated from reports · updated 4 hours ago
Report timeline
Follow the reports to see the event from different angles.
- Shanghai Institute of Optics and Fine Mechanics (SIOM) · Research UpdatesPicksSIOM Makes Progress in Large-Aperture Spherical Interferometric Wavefront Measurement
The Shanghai Institute of Optics and Fine Mechanics (SIOM) established a theoretical model for spherical-wave lateral shearing interferometry and used a photon-sieve central-obscuration zone plate to match a large-aperture beam to a small-area detector. The team measured window glass with 5-inch and 9-inch zone plates. The transmitted wavefront PV of the 4-inch sample was 0.0738λ and 0.0735λ, against a Zygo reference result of 0.073λ at 632.8 nm. The 8-inch sample yielded a measured PV of 0.2288λ, versus a reference result of 0.222λ at 632.8 nm. The results were published in Optics and Laser Technology.
Heat trend for this event
Not enough continuous observation data to plot a trend yet.