High-Contrast Coronagraphy

Abstract

Imaging terrestrial exoplanets around nearby stars is a formidable technical challenge, requiring the development of coronagraphs to suppress the stellar halo of diffracted light at the location of the planet. In this review, we derive the science requirement for high-contrast imaging, present an overview of diffraction theory and the Lyot coronagraph, and define the parameters used in our optimization. We detail the working principles of coronagraphs both in the laboratory and on-sky with current high-contrast instruments, and we describe the required algorithms and processes necessary for terrestrial planet imaging with the extremely large telescopes and proposed space telescope missions: * Imaging terrestrial planets around nearby stars is possible with a combination of coronagraphs and active wavefront control using feedback from wavefront sensors. * Ground based 8-40m class telescopes can target the habitable zone around nearby M dwarf stars with contrasts of $10^{-7}$ and space telescopes can search around solar-type stars with contrasts of $10^{-10}$. * Focal plane wavefront sensing, hybrid coronagraph designs and multiple closed loops providing active correction are required to reach the highest sensitivities. * Polarization effects need to be mitigated for reaching $10^{-10}$ contrasts whilst keeping exoplanet yields as high as possible. * Recent technological developments, including photonics and microwave kinetic inductance detectors, will be folded into high-contrast instruments.

Invited review article. 41 pages, 12 figures, 1 table. The paper is in a reproducible workflow repository at https://github.com/mkenworthy/ARAA_HCC

References in corpus (90)

• Angular Differential Imaging: a Powerful High-Contrast Imaging Technique
• SPHERE: the exoplanet imager for the Very Large Telescope
• Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life
• Two accreting protoplanets around the young star PDS 70
• Imaging Spectroscopy for Extrasolar Planet Detection
• NICMOS Imaging of the HR 4796A Circumstellar Disk
• Limits of Adaptive Optics for high contrast imaging
• Combining high-dispersion spectroscopy (HDS) with high contrast imaging (HCI): Probing rocky planets around our nearest neighbors
• How to Characterize Habitable Worlds and Signs of Life
• Phase-Induced Amplitude Apodization of Telescope Pupils for Extrasolar Terrestrial Planet Imaging
• A Coronagraph with a Band-Limited Mask for Finding Terrestrial Planets
• A young protoplanet candidate embedded in the circumstellar disk of HD100546
• High-contrast Imaging from Space: Speckle Nulling in a Low Aberration Regime
• Optimal Dark Hole Generation via Two Deformable Mirrors with Stroke Minimization
• Exoplanets imaging with a Phase-Induced Amplitude Apodization Coronagraph - I. Principle
• Photonic Lantern
• SPHERE / ZIMPOL high resolution polarimetric imager. I. System overview, PSF parameters, coronagraphy, and polarimetry
• Observing Exoplanets with High-Dispersion Coronagraphy. II. Demonstration of an Active Single-Mode Fiber Injection Unit
• TRIDENT: an Infrared Differential Imaging Camera Optimized for the Detection of Methanated Substellar Companions
• Medium-resolution integral-field spectroscopy for high-contrast exoplanet imaging: Molecule maps of the $\beta$ Pictoris system with SINFONI
• First Results From VLT NACO Apodizing Phase Plate: 4-micron Images of the Exoplanet beta Pictoris b
• On-sky speckle nulling demonstration at small angular separation with SCExAO
• Very high contrast IFU spectroscopy of AB Doradus C: 9 mag contrast at 0.2" without a coronagraph using spectral deconvolution
• Imaging extrasolar planets by stellar halo suppression in separately-corrected color bands
• PhaseGAN: A deep-learning phase-retrieval approach for unpaired datasets
• Efficient injection from large telescopes into single-mode fibres: Enabling the era of ultra-precision astronomy
• The Vector-APP: a Broadband Apodizing Phase Plate that yields Complementary PSFs
• Ring-apodized vortex coronagraphs for obscured telescopes. I. Transmissive ring apodizers
• First On-Sky High Contrast Imaging with an Apodizing Phase Plate
• The Asymmetric Pupil Fourier Wavefront Sensor
• Lyot-based Low Order Wavefront Sensor for Phase-mask Coronagraphs: Principle, Simulations and Laboratory Experiments
• Self-coherent camera as a focal plane wavefront sensor: simulations
• High-order myopic coronagraphic phase diversity (COFFEE) for wave-front control in high-contrast imaging systems
• Coronagraphic Low Order Wavefront Sensor: Principle and Application to a Phase-Induced Amplitude Coronagraph
• Performance characterization of a broadband vector Apodizing Phase Plate coronagraph
• Origin of the asymmetry of the wind driven halo observed in high contrast images
• On-sky performance analysis of the vector Apodizing Phase Plate coronagraph on MagAO/Clio2
• The coronagraphic Modal Wavefront Sensor: a hybrid focal-plane sensor for the high-contrast imaging of circumstellar environments
• Optimal Asymmetric Apodizations and Shaped Pupils for Planet Finding Coronagraphy
• 2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments
• Focal Plane Wavefront Sensing using Residual Adaptive Optics Speckles
• On-sky performance of the QACITS pointing control technique with the Keck/NIRC2 vortex coronagraph
• Speckle Control with a remapped-pupil PIAA-coronagraph
• Speckle Temporal Stability in eXtreme Adaptive Optics Coronagraphic Images
• Efficient spectroscopy of exoplanets at small angular separations with vortex fiber nulling
• Direct imaging and spectroscopy of exoplanets with the ELT/HARMONI high-contrast module
• Focal Plane Wavefront Sensing using Machine Learning: Performance of Convolutional Neural Networks compared to Fundamental Limits
• Color Classification of Extrasolar Giant Planets: Prospects and Cautions
• Astrophotonics: astronomy and modern optics
• On-sky demonstration of low-order wavefront sensing and control with focal plane phase mask coronagraphs
• Implicit electric field Conjugation: Data-driven focal plane control
• The vector-apodizing phase plate coronagraph: design, current performance, and future development
• Minimizing the polarization leakage of geometric-phase coronagraphs with multiple grating pattern combinations
• SCExAO/MEC and CHARIS Discovery of a Low Mass, 6 AU-Separation Companion to HIP 109427 using Stochastic Speckle Discrimination and High-Contrast Spectroscopy
• Focal-plane wavefront sensing with the vector Apodizing Phase Plate
• On-sky verification of Fast and Furious focal-plane wavefront sensing: Moving forward toward controlling the island effect at Subaru/SCExAO
• Efficient detection and characterization of exoplanets within the diffraction limit: nulling with a mode-selective photonic lantern
• Reference-less detection, astrometry, and photometry of faint companions with adaptive optics
• Dark Hole Maintenance and A Posteriori Intensity Estimation in the Presence of Speckle Drift in a High-Contrast Space Coronagraph
• Extremely fast focal-plane wavefront sensing for extreme adaptive optics
• Increasing the raw contrast of VLT/SPHERE with the dark hole technique. I. Simulations and validation on the internal source
• Experimental validation of joint phase and amplitude wave-front sensing with coronagraphic phase diversity for high-contrast imaging
• Polarization aberrations in next-generation giant segmented mirror telescopes (GSMTs) I. Effect on the coronagraphic performance
• Fast Coherent Differential Imaging on Ground-Based Telescopes using the Self-Coherent Camera
• Phase-Apodized-Pupil Lyot Coronagraphs for Arbitrary Telescope Pupils
• Increasing the raw contrast of VLT/SPHERE with the dark-hole technique. II. On-sky wavefront correction and coherent differential imaging
• Laboratory verification of 'Fast & Furious' phase diversity: Towards controlling the low wind effect in the SPHERE instrument
• A Direct Measurement of Atmospheric Dispersion in N-band Spectra: Implications for Mid-IR Systems on ELTs
• Calibration of quasi-static aberrations in exoplanet direct-imaging instruments with a Zernike phase-mask sensor. IV. Temporal stability of non-common path aberrations in VLT/SPHERE
• Prospects for Directly Imaging Young Giant Planets at Optical Wavelengths
• Design, implementation, and on-sky performance of an advanced apochromatic triplet atmospheric dispersion corrector for the Magellan adaptive optics system and VisAO camera
• Measuring the variability of directly imaged exoplanets using vector Apodizing Phase Plates combined with ground-based differential spectrophotometry
• A deep learning approach for focal-plane wavefront sensing using vortex phase diversity
• Millisecond Exoplanet Imaging, I: Method and Simulation Results
• High-contrast observations of brown dwarf companion HR 2562 B with the vector Apodizing Phase Plate coronagraph
• Quantification of the expected residual dispersion of the MICADO Near-IR imaging instrument
• Exploring the directly imaged HD 1160 system through spectroscopic characterization and high-cadence variability monitoring
• The spectrally modulated self-coherent camera (SM-SCC): Increasing throughput for focal-plane wavefront sensing
• Atmospheric refractivity effects on mid-infrared ELT adaptive optics
• Polarization-dependent beam shifts upon metallic reflection in high-contrast imagers and telescopes
• The polarization-encoded self-coherent camera
• Strategy for sensing petal mode in presence of AO residual turbulence with pyramid wavefront sensor
• Low-order wavefront control using a Zernike sensor through Lyot coronagraphs for exoplanet imaging: II. Concurrent operation with stroke minimization
• First light of a holographic aperture mask: Observation at the Keck OSIRIS Imager
• Fundamental limit of single-mode integral-field spectroscopy
• Redundant apodization for direct imaging of exoplanets 2: Application to island effects
• Redundant apodization for direct imaging of exoplanets I: Robustness to primary mirror segmentation-induced errors outside the segment diffraction limit
• Experimental validation of coronagraphic focal-plane wavefront sensing for future segmented space telescopes
• High Speed Focal Plane Wavefront Sensing with an Optical Chopper
• Polarization dOTF: on-sky focal plane wavefront sensing

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