Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Is there need of any modulation in the pyramid wavefront sensor?

[+] Author Affiliations
Joana B. Costa, Markus Feldt, Elena Puga

Max-Planck-Institut fur Astronomie (Germany)

Roberto Ragazzoni

Max-Planck-Institut fur Astronomie and Osservatorio Astrofisico di Arcetri (Germany)

Adriano Ghedina

Telescopio Nazionale Galileo (Spain)

Marcel Carbillet, Christophe Verinaud, Simone Esposito, Jacopo Farinato

Osservatorio Astrofisico di Arcetri (Italy)

Proc. SPIE 4839, Adaptive Optical System Technologies II, 288 (February 1, 2003); doi:10.1117/12.459032
Text Size: A A A
From Conference Volume 4839

  • Adaptive Optical System Technologies II
  • Peter L. Wizinowich; Domenico Bonaccini
  • Waikoloa, Hawai'i, USA | August 22, 2002

abstract

In the pyramid wavefront sensor some dynamic range is accomplished by modulating the optical signal across the four faces of the pyramid before the dissection and detection of the light. Although this can be realized in different ways, including systems which do not require any moving part, we question and discuss the real needs for such a modulation. In fact, when the closed-loop performance is not perfect, some residual errors on the wavefront sensor are expected and one should take care to allow for enough dynamic range to get a linear response within such a residual range. However, the non-corrected aberrations themselves can be considered as a form of modulation. Higher order uncompensated residuals are equivalent to a modulation for the lower compensated modes. We present a preliminary study showing that this sort of 'natural' modulation could be, at least under certain conditions, enough to reach comparable results with respect to dynamical modulation during correction, hence rising the question of the need of a modulation in the realization of the pyramid wavefront sensor.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Joana B. Costa ; Roberto Ragazzoni ; Adriano Ghedina ; Marcel Carbillet ; Christophe Verinaud, et al.
"Is there need of any modulation in the pyramid wavefront sensor?", Proc. SPIE 4839, Adaptive Optical System Technologies II, 288 (February 1, 2003); doi:10.1117/12.459032; http://dx.doi.org/10.1117/12.459032


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.