OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 14 — Jul. 6, 2009
  • pp: 11652–11664

The effect of a small heat source on PSF stability for high-contrast imaging

JuliaW. Evans, Bruce Macintosh, Andrew Norton, Daren Dillon, and Donald Gavel  »View Author Affiliations


Optics Express, Vol. 17, Issue 14, pp. 11652-11664 (2009)
http://dx.doi.org/10.1364/OE.17.011652


View Full Text Article

Enhanced HTML    Acrobat PDF (424 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

High-contrast adaptive optics systems, such as those needed to image extrasolar planets, are known to require excellent wavefront control and diffraction suppression. The Laboratory for Adaptive Optics at UC Santa Cruz is investigating limits to high-contrast imaging in support of the Gemini Planet Imager (GPI). In this paper we examine the effect of heat sources in the testbed on point-spread-function (PSF) stability. Introducing a heat source primarily introduces image motion. The GPI error budget requires image motion to be less than 0.1 λ/D. Systematic motion of the PSF core is typically 0.01λ/D rms and with a 20 watt heat source introduced near the pupil plane image motion is increased to 0.02λ/D rms. Therefore, even a heat source as large as 20 watts near the pupil plane causes errors below the GPI requirement, but the combination of the heat source and additional air turbulence on the system introduced by changes to the enclosure or the fan of other components can produce significantly more motion. Heat also can affect the speckle pattern in the high-contrast region, but in the final instrument other sources of error should be more significant.

© 2009 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(230.3990) Optical devices : Micro-optical devices
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Adaptive Optics

History
Original Manuscript: March 24, 2009
Revised Manuscript: May 8, 2009
Manuscript Accepted: May 9, 2009
Published: June 26, 2009

Citation
Julia W. Evans, Bruce Macintosh, Andrew Norton, Daren Dillon, and Donald Gavel, "The effect of a small heat source on PSF stability for high-contrast imaging," Opt. Express 17, 11652-11664 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-14-11652


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. B. Macintosh, J. Graham, D. Palmer, R. Doyon, D. Gavel, J. Larkin, B. Oppenheimer, L. Saddlemyer, J. Wallace, B. Bauman,  et al., "Adaptive optics for direct detection of extrasolar planets: the Gemini Planet Imager," Comptes rendus-Physique 8, 365-373 (2007). [CrossRef]
  2. F. Wildi, J. Beuzit, M. Feldt, D. Mouillet, K. Dohlen, P. Puget, A. Baruffolo, J. Charton, J. Antichi, P. Baudoz,  et al., "The SPHERE exoplanet imager: status report at PDR," Proc. SPIE 6691, 66910L (2007). [CrossRef]
  3. J. Trauger and W. Traub, "A laboratory demonstration of the capability to image an Earth-like extrasolar planet." Nature 446, 771-3 (2007). [CrossRef] [PubMed]
  4. J. W. Evans, G. Sommargren, B. A. Macintosh, S. Severson, and D. Dillon, "Effect of Wavefront Error on 10−7 Contrast Measurements," Opt Lett. 31, 565-567 (2006). [CrossRef] [PubMed]
  5. J. Evans, S. Thomas, D. Dillon, D. Gavel, D. Phillion, and B. Macintosh, "Amplitude variations on the ExAO testbed," Proc. SPIE 6693, 669312 (2007). [CrossRef]
  6. T. Bifano, P. Bierden, and J. Perreault, "Micromachined Deformable Mirrors for Dynamic Wavefront Control," Proc. SPIE 5553, 1-16 (2004). [CrossRef]
  7. J. W. Evans, B. A. Macintosh, L. Poyneer, K. Morzinski, S. Severson, D. Dillon, D. Gavel, and L. Reza, "Demonstrating sub-nm closed loop MEMS flattening," Opt. Express 14, 5558-5570 (2006). [CrossRef] [PubMed]
  8. L. Poyneer, D. Dillon, S. Thomas, and B. Macintosh, "Laboratory demonstration of accurate and efficient nanometer-level wavefront control for extreme adaptive optics," Appl. Opt. 47, 1317-1326 (2008). [CrossRef] [PubMed]
  9. N. J. Kasdin, R. J. Vanderbei, D. N. Spergel, and M. G. Littman, "Extrasolar planet finding via optimal apodizedpupil and shaped-pupil coronagraphs," Astrophys. J. 582, 1147-61 (2003). [CrossRef]
  10. R. Belikov, J. Beall, M. Carr, A. Give’on, J. Kay, T. Kolade, M. Littman, F. Mycroft, L. Pueyo, R. Vanderbei,  et al., "Towards 10−10 Contrast for NASA’s Terrestrial Planet Finder Mission: Demonstration of High Contrast in a Shaped-Pupil Coronagraph at Princeton," Proceedings of the International Astronomical Union 1(C200), 415-420 (2006).
  11. K. Balasubramanian, P. Echternach, M. Dickie, R. Muller, V. White, D. Hoppe, S. Shaklan, R. Belikov, N. Kasdin, R. Vanderbei,  et al., "Fabrication and characteristics of free-standing shaped pupil masks for TPF-coronagraph," Proc. SPIE 6265, 62653N (2006). [CrossRef]
  12. R. Soummer, C. Aime, and P. E. Falloon, "Prolate apodized coronagraphy: numerical simulations for circular apertures," EAS Publications Series, Volume 8, 2003, Astronomy with High Contrast Imaging, Proceedings of the conference held 13-16 May, 2002 in Nice, France. Edited by C. Aime and R. Soummer, pp.93-105. 8, 93-105 (2003).
  13. C. Aime, R. Soummer, and A. Ferrari, "Interferometric apodization of rectangular apertures. Application to stellar coronagraphy," A&A 379, 697-707 (2001).
  14. S. J. Thomas, R. Soummer, D. R. Dillon, B. A. Macintosh, J. W. Evans, D. T. Gavel, A. Sivaramakrishnan, and C. Marois, "Testing the APLC on the LAO ExAO testbed, " Proc. SPIE 7015, 7015-238 (2008).
  15. J. W. Evans, S. J. Thomas, D. Gavel, D. Dillon, and B. A. Macintosh, "Contrast analysis and stability on the ExAO testbed," in Adaptive Optics Systems, Proc. SPIE 7015, 70156K-70156K (2008). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Multimedia

Multimedia FilesRecommended Software
» Media 1: AVI (14448 KB)      QuickTime

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited