CONFERENCE PROCEEDINGS
Advanced Search >
Home > Proceedings > Volume 9907 > Article
16 August 2016 Interferometric direct imaging properties of a BIGRE-DAM device in laboratory
Fabien Patru, Jacopo Antichi, Patrick Rabou, Enrico Giro, Jacopo Farinato, Raffaele Gratton, Daniele Vassallo, Christophe Verinaud, Denis Mourard, Julien Girard
Author Affiliations +
Proceedings Volume 9907, Optical and Infrared Interferometry and Imaging V; 99072U (2016) https://doi.org/10.1117/12.2233108
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom
Abstract
DAM (Discretized Aperture Mapping) is an original optical concept able to improve the performance in high angular resolution and high contrast imaging by the present class of large telescopes equipped with adaptive optics. By discretizing the entrance pupil of a large telescope into an array of many coherent sub-apertures, DAM provides unique imaging and filtering properties by means of spatial filtering and interferometric techniques. DAM can be achieved by means of single-mode fibers, integrated optic waveguides, pinholes, or simply with an innovative BIGRE optical device. BIGRE is formed of an afocal double micro-lenses array. In addition to the pupil discretization process by spatial filtering, BIGRE can also provide two other optical processes: the pupil densification or the pupil dilution. DAD (Discretized Aperture Densification) increase the sub-aperture sizes and is suitable to a hypertelescope, whereas DADI (Discretized Aperture Dilution Interferometry) reduces the sub-aperture sizes and turns a large telescope into a Fizeau interferometer. This paper deals with the first in-lab experiment at visible wavelength of BIGRE devices for the three configurations above. We study the point spread function (PSF) when observing a point-like object located either on-axis or at various off-axis positions across the field of view. Both interferometric and diffractive effects are described. The experimental measurements are in good agreement with the BIGRE theory. It results that BIGRE fulfils the requirements to carry out spatially filtered pupil discretization (DAM), with possible densification (DAD) or dilution (DADI).
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Fabien Patru, Fabien Patru, Jacopo Antichi, Jacopo Antichi, Patrick Rabou, Patrick Rabou, Enrico Giro, Enrico Giro, Jacopo Farinato, Jacopo Farinato, Raffaele Gratton, Raffaele Gratton, Daniele Vassallo, Daniele Vassallo, Christophe Verinaud, Christophe Verinaud, Denis Mourard, Denis Mourard, Julien Girard, Julien Girard, "Interferometric direct imaging properties of a BIGRE-DAM device in laboratory", Proc. SPIE 9907, Optical and Infrared Interferometry and Imaging V, 99072U (16 August 2016); doi: 10.1117/12.2233108; https://doi.org/10.1117/12.2233108
ACCESS THE FULL ARTICLE
PERSONAL SIGN IN
Full access may be available with your subscription
 
Forgot your username?
Forgot your password?
No SPIE account? Create an account
or Institutional Sign In via Shibboleth
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $14.40
Non-members: $18.00 ADD TO CART
PROCEEDINGS
 14 PAGES
DOWNLOAD PDF + SAVE TO MY LIBRARY
SHARE
GET CITATION
< Previous Article
|
Next Article >
KEYWORDS
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top