Low-angle optical vortex coronagraphic scatterometer
نویسندگان
چکیده
منابع مشابه
Construction and Validation of an Angle-Resolved Scatterometer for Investigation of 157 nm Optical Materials
scatterometer optimized for near angle measurements. The system relies on a unique beam apodization scheme using gas phase absorption to produce a Gaussian pupil function. Initial results show two orders of magnitude improvement over a previous design employing a uniform pupil function. The background signature is approaching sufficient levels to measure small angle scatter from high quality EU...
متن کاملTrapping of low-index microparticles in an optical vortex
The equilibrium position of a low-index particle in an optical-vortex trap was experimentally measured for two different systems: a buoyant hollow glass sphere in water and a density-matched water droplet in acetophenone. Vortex traps are the only known static, single-beam configurations allowing three-dimensional trapping of such particles in the size range of 2–50 mm. The trap consists of a s...
متن کاملLow-power nano-optical vortex trapping via plasmonic diabolo nanoantennas.
Optical vortex trapping can allow the capture and manipulation of micro- and nanometre-sized objects such as damageable biological particles or particles with a refractive index lower than the surrounding material. However, the quest for nanometric optical vortex trapping that overcomes the diffraction limit remains. Here we demonstrate the first experimental implementation of low-power nano-op...
متن کاملOptical vortex vectographs.
We theoretically and experimentally demonstrate how "vectograph" film may be used to create arbitrarily complex vector fields having broadband phase features such as optical vortices.
متن کاملOptical vortex coronagraph.
We describe a method to observe dim exoplanets that eliminates light from the parent star across the entire exit pupil without sacrificing light from the planet by use of a vortex mask of topological charge m = 2.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Letters
سال: 2016
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.41.004915