An open-source Gaussian beamlet decomposition tool for modeling astronomical telescopes

  title={An open-source Gaussian beamlet decomposition tool for modeling astronomical telescopes},
  author={Jaren N. Ashcraft and E. Douglas},
  booktitle={Astronomical Telescopes + Instrumentation},
In the pursuit of directly imaging exoplanets, the high-contrast imaging community has developed a multitude of tools to simulate the performance of coronagraphs on segmented-aperture telescopes. As the scale of the telescope increases and science cases move toward shorter wavelengths, the required physical optics propagation to optimize high-contrast imaging instruments becomes computationally prohibitive. Gaussian Beamlet Decom- position (GBD) is an alternative method of physical optics… Expand


Modeling coronagraphic extreme wavefront control systems for high contrast imaging in ground and space telescope missions
An E2E simulation of a laser guidestar (LGS) companion spacecraft testbed demonstration, which uses a remote beacon to increase the signal available for WFS and control of the primary aperture segments of a future large space telescope, providing of order 10 factor improvement for relaxing observatory stability requirements. Expand
Accelerated modeling of near and far-field diffraction for coronagraphic optical systems
Accurately predicting the performance of coronagraphs and tolerancing optical surfaces for high-contrast imaging requires a detailed accounting of diffraction effects. Unlike simple FraunhoferExpand
Simulating point spread functions for the James Webb Space Telescope with WebbPSF
Experience with the Hubble Space Telescope has shown that accurate models of optical performance are extremely desirable to astronomers, both for assessing feasibility and planning scientificExpand
Modeling physical optics phenomena by complex ray tracing
Abstract. Physical optics modeling requires propagating optical wave fields from a specific radiometric source through complex systems of apertures and reflective or refractive optical components, orExpand
PROPER: an optical propagation library for IDL
  • J. Krist
  • Physics, Engineering
  • SPIE Optical Engineering + Applications
  • 2007
PROPER is a library of IDL (Interactive Data Language) routines for simulating optical propagation in the near and far fields using Fourier-based Fresnel and angular spectrum methods. The goal ofExpand
Modeling interferometers with lens design software: beyond ray-based approaches
There are a variety of aspects of interferometers that can be well-modeled by using rays. For example, ray-based models allow predictions to be made regarding the changes to a measurement whenExpand
ExoPlanet Optics: conceptual design processes for stealth telescopes
In this paper we examine several contrast-degrading static signature sources present in current terrestrial exoplanet Lyot Coronagraph/Telescope optical systems. These are: - Unnecessary opticalExpand
A review of simulation and performance modeling tools for the Roman coronagraph instrument
Simulation tools spanning from depth of search calculators to detailed diffraction models have been created by a variety of teams for the Nancy Grace Roman Space Telescope Coronagraph Instrument, with a particular focus on publicly available datasets and software tools. Expand
Exoplanet telescope diffracted light minimized: the pinwheel-pupil solution
Terrestrial exoplanets shine in light reflected from a parent star. Optical spectra are required to provide evidence of a life-supporting environment. Exoplanets are very faint and their opticalExpand
Vectorial field propagation through high NA objectives using polarized Gaussian beam decomposition
Scalar fields can be propagated through non-paraxial systems using the Gaussian beam decomposition method. However, for high NA objectives, this scalar treatment is not sufficient to correctlyExpand