77 citations · 343 across the 13 of their papers we have counts for
13 papers
Theoretical efficiency limit of diffractive input couplers in augmented reality waveguides
Zhexin Zhao, Yun-Han Lee, Xiayu Feng +3
Considerable efforts have been devoted into augmented reality (AR) displays to enable the immersive user experience in the wearable glasses form factor. Transparent waveguide combi…
Field of View Based Optimization of Aspheric Designed Geometric-Phase Doublet Lenses
Kathryn J. Hornburg, Xiao Xiang, Michael W. Kudenov +1
Here we study aspheric phase pattern geometric-phase lenses through the design of doublet lenses in Zemax Optic Studio and in MATLAB using a simple ray tracing code. The solutions…
First light of a holographic aperture mask: Observation at the Keck OSIRIS Imager
David S. Doelman, Joost P. Wardenier, Peter Tuthill +8
We report on the design, construction, and commissioning of a prototype aperture masking technology implemented at the Keck OSIRIS Imager: the holographic aperture mask. Holographi…
The vector-apodizing phase plate coronagraph: design, current performance, and future development
D. S. Doelman, F. Snik, E. H. Por +50
Over the last decade, the vector-apodizing phase plate (vAPP) coronagraph has been developed from concept to on-sky application in many high-contrast imaging systems on 8-m class t…
Minimizing the polarization leakage of geometric-phase coronagraphs with multiple grating pattern combinations
David S. Doelman, Emiel H. Por, Garreth Ruane +2
The design of liquid-crystal diffractive phase plate coronagraphs for ground-based and space-based high-contrast imaging systems is limited by the trade-off between spectral bandwi…
Simultaneous phase and amplitude aberration sensing with a liquid-crystal vector-Zernike phase mask
David S. Doelman, Fedde Fagginger Auer, Michael J. Escuti +1
We present an enhanced version of the Zernike wavefront sensor, that simultaneously measures phase and amplitude aberrations. The 'vector-Zernike' wavefront sensor consists of a pa…
Fully broadband vAPP coronagraphs enabling polarimetric high contrast imaging
Steven P. Bos, David S. Doelman, Jos de Boer +4
We present designs for fully achromatic vector Apodizing Phase Plate (vAPP) coronagraphs, that implement low polarization leakage solutions and achromatic beam-splitting, enabling…
WIRC+Pol: a low-resolution near-infrared spectropolarimeter
Samaporn Tinyanont, Maxwell A. Millar-Blanchaer, Ricky Nilsson +14
WIRC+Pol is a newly commissioned low-resolution (R~100), near-infrared (J and H band) spectropolarimetry mode of the Wide-field InfraRed Camera (WIRC) on the 200-inch Hale Telescop…
The Single-mode Complex Amplitude Refinement (SCAR) coronagraph: II. Lab verification, and toward the characterization of Proxima b
S. Y. Haffert, E. H. Por, C. U. Keller +4
We present the monochromatic lab verification of the newly developed SCAR coronagraph that combines a phase plate (PP) in the pupil with a microlens-fed single-mode fiber array in…
Patterned liquid-crystal optics for broadband coronagraphy and wavefront sensing
David S. Doelman, Frans Snik, Nathaniel Z. Warriner +1
The direct-write technology for liquid-crystal patterns allows for manufacturing of extreme geometric phase patterned coronagraphs that are inherently broadband, e.g. the vector Ap…
On-sky performance analysis of the vector Apodizing Phase Plate coronagraph on MagAO/Clio2
Gilles P. P. L. Otten, Frans Snik, Matthew A. Kenworthy +9
We report on the performance of a vector apodizing phase plate coronagraph that operates over a wavelength range of m and is installed in MagAO/Clio2 at the 6.5 m Magellan C…
Performance characterization of a broadband vector Apodizing Phase Plate coronagraph
G. P. P. L. Otten, F. Snik, M. A. Kenworthy +2
One of the main challenges for the direct imaging of planets around nearby stars is the suppression of the diffracted halo from the primary star. Coronagraphs are angular filters t…
The Vector-APP: a Broadband Apodizing Phase Plate that yields Complementary PSFs
Frans Snik, Gilles Otten, Matthew Kenworthy +4
The apodizing phase plate (APP) is a solid-state pupil optic that clears out a D-shaped area next to the core of the ensuing PSF. To make the APP more efficient for high-contrast i…