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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 11 — Apr. 10, 2008
  • pp: 1785–1789

Reflective liquid crystal wavefront corrector used with tilt incidence

Zhaoliang Cao, Quanquan Mu, Lifa Hu, Yonggang Liu, Zenghui Peng, and Li Xuan  »View Author Affiliations


Applied Optics, Vol. 47, Issue 11, pp. 1785-1789 (2008)
http://dx.doi.org/10.1364/AO.47.001785


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Abstract

To allow angular separation of the beam reflected off a liquid crystal wavefront corrector from the incident beam, it is convenient to introduce a small incident angle. This avoids using a beam splitter and the associated energy losses. The effect of the tilt incidence on the liquid crystal wavefront corrector was investigated in this paper. For a parallel aligned liquid crystal wavefront corrector, a simplified model was established and used to analyze the change of the phase modulation under the tilt incidence. The simulated results showed that the effect of the tilt incidence on the phase modulation can be ignored when the angle of tilt incidence is less than 6 ° . The phase modulation related to the incident angle was measured and the changing trend was similar to the calculated results. The effect of the tilt incidence on the diffraction efficiency of the liquid crystal wavefront corrector was also discussed. The simulated results indicated that the reduction of the diffraction efficiency is less than 1% for incidence angles under 3 ° . Last, a closed loop correction experiment was done with an incident angle of 1 ° . After correction, the averaged peak to valley (PV) and root mean square (RMS) of the wavefront were down to 0.15 λ and 0.03 λ , respectively, and a resolvable image was acquired.

© 2008 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(230.3720) Optical devices : Liquid-crystal devices
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Optical Devices

History
Original Manuscript: November 20, 2007
Revised Manuscript: February 13, 2008
Manuscript Accepted: February 22, 2008
Published: April 9, 2008

Citation
Zhaoliang Cao, Quanquan Mu, Lifa Hu, Yonggang Liu, Zenghui Peng, and Li Xuan, "Reflective liquid crystal wavefront corrector used with tilt incidence," Appl. Opt. 47, 1785-1789 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-11-1785

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