Polarization, the path traced by light's electric field vector, appears in all areas of optics. In
recent decades, various technologies have enabled the precise control of light's polarization …

Significant optical engineering advances at the University of Arizona are being made for
design, fabrication, and construction of next generation astronomical telescopes. This …

High-contrast adaptive optics (AO) imaging is a powerful technique to probe the
architectures of planetary systems from the outside-in and survey the atmospheres of self …

Observations of circumstellar environments that look for the direct signal of exoplanets and
the scattered light from disks have significant instrumental implications. In the past 15 years …

Abstract The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is a
multipurpose high-contrast imaging platform designed for the discovery and detailed …

A direct image of an exoplanet system is a snapshot of the planets and disk around a central
star. We can estimate the orbit of a planet from a time series of images, and we can estimate …

Three exoplanets around the star HR 8799 have recently been discovered by means of
differential imaging with large telescopes. Bright scattered starlight limits high-contrast …

Small-angle coronagraphy is technically and scientifically appealing because it enables the
use of smaller telescopes, allows covering wider wavelength ranges, and potentially …

Reference star differential imaging (RDI) is a powerful strategy for high-contrast imaging.
Using example observations taken with the vortex coronagraph mode of Keck/NIRC2 in …

First generation space-based optical coronagraphic telescopes will obtain images of cool
gas-and ice-giant exoplanets around nearby stars. Exoplanets lying at planet–star …