The Zygo research team is committed to publishing their latest research in the scientific and optical metrology communities.
This paper discusses how the demand for freeform solutions is no more strongly felt than in the development of digital immersive displays for augmented and mixed reality, where the combination of exceptionally high performance combines with ergonomic constraints of wearable interactive technologies.
May 1, 2022
This paper reviews seven specific developments, ranging from data acquisition to fundamental imaging theory in three dimensions, that illustrate the synergistic developments of holography and interferometry.
Mar 2, 2022
In this presentation, we discuss some of the opportunities and challenges for optical metrology in the context of industry 4.0.
Feb 1, 2022
This paper presents the results of one such effort to coat multi-layered Al2O3 and MgF2 antireflection coatings on substrates of planar, spherical, and aspherical geometries. The spectral, surface quality, and pulsed laser damage performance of these coatings are presented.
Jan 25, 2022
This paper presents many contributions of holography to the advancement of interferometry for surface topography measurement.
Jan 1, 2022
The advances in flexible, precision aspheric form measurement using axially scanned interferometry Zygo’s Verifire™ Asphere (VFA) measuring instrument relies on translating the test part along the optical axis of a laser Fizeau interferometer while collecting interference fringes from areas of low slope relative to a spherical reference surface.
Oct 18, 2021
The response of an interferometer to variations in surface height depends on the filtering properties of the imaging system. Here we provide a simple and practical model of an imaging interferometer using classical Fourier optics, including the effects of partial coherence.
Aug 21, 2021
We propose an instrument model for coherence scanning interferometry using familiar Fourier optics methods, the spectrum of plane waves, and the assumption that the light source spectral bandwidth is the dominant factor in determining fringe contrast as a function of optical path length.
Aug 5, 2021
Here we review the principles and current state of the art for swept-wavelength interferometry for optical testing, including recent advances in digital holographic refocusing and environmental robustness using model-based data analysis.
Aug 1, 2021
This article discusses a new instrument for measurements of thin transparent flats incorporates a novel in-line normal-incidence equal path interferometer, and extended broad-band illumination to isolate the surface of interest while reducing coherent noise and artifacts.
Jul 14, 2021
This article reports on a Fizeau-type interferometer optimized for light-efficient, single-frame carrier fringe acquisition for instantaneous metrology at high lateral resolution.
Jul 14, 2021
This paper explores how advances in digital signal processing are driving a convergence of the two techniques.
Jul 14, 2021