Impact of pupil plane filtering on mask roughness transfer

2013 ◽  
Vol 31 (6) ◽  
pp. 06F801 ◽  
Author(s):  
Burak Baylav ◽  
Chris Maloney ◽  
Zac Levinson ◽  
Joost Bekaert ◽  
Alessandro Vaglio Pret ◽  
...  
Keyword(s):  
Pupil Plane ◽  
Mask Roughness

Mitigating mask roughness via pupil filtering

2014 ◽  
Author(s):  
B. Baylav ◽  
C. Maloney ◽  
Z. Levinson ◽  
J. Bekaert ◽  
A. Vaglio Pret ◽  
...  
Keyword(s):  
Mask Roughness

Predicting LER PSD caused by mask roughness using a mathematical model

2014 ◽  
Author(s):  
Rene A. Claus ◽  
Andrew R. Neureuther ◽  
Laura Waller ◽  
Patrick P. Naulleau
Keyword(s):  
Mathematical Model ◽  
Mask Roughness

Axial behavior of pupil-plane filters

1988 ◽  
Vol 5 (5) ◽  
pp. 643 ◽  
Author(s):  
C. J. R. Sheppard ◽  
Z. S. Hegedus
Keyword(s):  
Axial Behavior ◽  
Pupil Plane

Optimized thermal imaging with a singlet and pupil plane encoding: experimental realization

2006 ◽  
Author(s):  
Gonzalo Muyo ◽  
Amritpal Singh ◽  
Mathias Andersson ◽  
David Huckridge ◽  
Andy Harvey
Keyword(s):  
Thermal Imaging ◽  
Experimental Realization ◽  
Pupil Plane

Pupil-Plane Interferometry

1989 ◽  
pp. 221-236 ◽  
Author(s):  
Claude Roddier ◽  
Francois Roddier
Keyword(s):  
Pupil Plane

scholarly journals The Single-mode Complex Amplitude Refinement (SCAR) coronagraph

2020 ◽  
Vol 635 ◽  
pp. A55 ◽  
Author(s):  
E. H. Por ◽  
S. Y. Haffert
Keyword(s):  
High Resolution ◽  
Adaptive Optics ◽  
Flux Ratio ◽  
Single Mode ◽  
Complex Amplitude ◽  
Phase Plate ◽  
Spectral Bandwidth ◽  
Nearby Star ◽  
Integral Field Spectrograph ◽  
Pupil Plane

Context. The recent discovery of an Earth-mass exoplanet around the nearby star Proxima Centauri provides a prime target for the search for life on planets outside our solar system. Atmospheric characterization of these planets has been proposed by blocking the starlight with a stellar coronagraph and using a high-resolution spectrograph to search for reflected starlight off the planet. Aims. Due to the large flux ratio and small angular separation between Proxima b and its host star (≲10−7 and ≲2.2λ/D respectively; at 750 nm for an 8 m-class telescope) the coronagraph requires high starlight suppression at extremely-low inner working angles. Additionally, it must operate over a broad spectral bandwidth and under residual telescope vibrations. This allows for efficient use of spectroscopic post-processing techniques. We aim to find the global optimum of an integrated coronagraphic integral-field spectrograph. Methods. We present the Single-mode Complex Amplitude Refinement (SCAR) coronagraph that uses a microlens-fed single-mode fiber array in the focal plane downstream from a pupil-plane phase plate. The mode-filtering property of the single-mode fibers allows for the nulling of starlight on the fibers. The phase pattern in the pupil plane is specifically designed to take advantage of this mode-filtering capability. Second-order nulling on the fibers expands the spectral bandwidth and decreases the tip-tilt sensitivity of the coronagraph. Results. The SCAR coronagraph has a low inner working angle (∼1λ/D) at a contrast of < 3 × 10−5 for the six fibers surrounding the star using a sufficiently-good adaptive optics system. It can operate over broad spectral bandwidths (∼20%) and delivers high throughput (> 50% including fiber injection losses). Additionally, it is robust against tip-tilt errors (∼0.1λ/D rms). We present SCAR designs for both an unobstructed and a VLT-like pupil. Conclusions. The SCAR coronagraph is a promising candidate for exoplanet detection and characterization around nearby stars using current high-resolution imaging instruments.

LGS alternative wave-front sensing: Projected Pupil Plane Pattern (PPPP)

2018 ◽  
Author(s):  
Huizhe Yang ◽  
Nazim Ali Bharmal ◽  
Richard M. Myers ◽  
Alastiar Basden ◽  
David Buscher ◽  
...  
Keyword(s):  
Wave Front ◽  
Pupil Plane ◽  
Plane Pattern

Performance modeling of terahertz (THz) and millimeter waves (mmW) pupil plane imaging

2018 ◽  
Author(s):  
Nafiseh Mohammadian ◽  
Ronald G. Driggers ◽  
Lei Zhang ◽  
Peter Offermans ◽  
Orges Furxhi ◽  
...  
Keyword(s):  
Millimeter Waves ◽  
Performance Modeling ◽  
Pupil Plane
Sign in / Sign up

Export Citation Format

Share Document