OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 42, Iss. 10 — Apr. 1, 2003
  • pp: 1867–1875

Deep Nulling by Means of Multiple-Beam Recombination

Arjan L. Mieremet and Joseph J. M. Braat  »View Author Affiliations


Applied Optics, Vol. 42, Issue 10, pp. 1867-1875 (2003)
http://dx.doi.org/10.1364/AO.42.001867


View Full Text Article

Acrobat PDF (169 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Direct detection of exoplanets is possible by use of a technique called nulling interferometry, which is based on destructive interference of light of the bright object and constructive interference of the faint object. In the infrared wavelength region, this implies that light of a star must be attenuated by a certain factor, the so-called rejection ratio, which typically equals 10<sup>6</sup>. This can be achieved by use of phase shifters, which apply a phase shift of π rad with an average error no greater than 2 mrad over a predefined wavelength region. For a 6–18-μm wavelength interval, this is a tough constraint. We show that the 2-mrad constraint can be relaxed if more than two beams participate in the beam recombination. We focus our attention on dispersive phase shifters and show that rejection ratios beyond 10<sup>6</sup> can be reached easily by use of a system of four or more apertures and simple dispersive phase shifters that consist of only one material.

© 2003 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(350.1260) Other areas of optics : Astronomical optics

Citation
Arjan L. Mieremet and Joseph J. M. Braat, "Deep Nulling by Means of Multiple-Beam Recombination," Appl. Opt. 42, 1867-1875 (2003)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-10-1867

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited