Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
Journal Home About Issues in Progress Current Issue All Issues Feature Issues

Phase-only liquid-crystal spatial light modulator for wave-front correction with high precision

Lifa Hu, Li Xuan, Yongjun Liu, Zhaoliang Cao, Dayu Li, and QuanQuan Mu

Open Access Open Access

Abstract

We introduce a novel parallel-aligned liquid-crystal (LC) spatial light modulator (SLM) that has been designed to operate in a phase-only mode for wave-front correction. We measured and analyzed theoretically the electro-optic characteristics of the LC SLM and obtained a peak-to-valley value of 0.07049λ (λ=0.6328 µm) after correction. A Strehl ratio of 0.989 indicates the approximate upper limit of an aberrated wave front that the LC SLM can correct when it is used in an adaptive optical system.

©2004 Optical Society of America

Full Article  |  PDF Article
More Like This
Investigation of optical testing with a phase-only liquid crystal spatial light modulator

Zhaoliang Cao, Li Xuan, Lifa Hu, Yongjun Liu, Quanquan Mu, and Dayu Li
Opt. Express 13(4) 1059-1065 (2005)

Wave-front correction and production of Zernike modes with a liquid-crystal spatial light modulator

Gordon D. Love
Appl. Opt. 36(7) 1517-1524 (1997)

Performance of a phase-conjugate engine implementing a finite-bit phase correction

K. L. Baker, E. A. Stappaerts, S. C. Wilks, D. Gavel, P. E. Young, J. Tucker, S. S. Olivier, D. A. Silva, and J. Olsen
Opt. Lett. 29(9) 980-982 (2004)

View More...

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (6)
Fig. 1.
Fig. 1. Optical setup used to investigate the modulation properties of the LC SLM: 1, He-Ne laser; 2, 3, lenses; 4, beam splitter; 5, partially reflective mirror; 6, LC SLM; 7, partially reflective mirror; 8, CCD; 9, 10, personal computers.

Download Full Size | PDF

Fig. 2.
Fig. 2. Phase as a function of applied gray levels of a parallel-aligned LC SLM.

Download Full Size | PDF

Fig. 3.
Fig. 3. Transmittance as a function of response times for a parallel-aligned LC cell.

Download Full Size | PDF

Fig. 4.
Fig. 4. Two-dimensional plot of the wave front (a) before correction and (b) after correction.

Download Full Size | PDF

Fig. 5.
Fig. 5. Comparison of the interferometer wave-front patterns: (a) uncorrected and (b) corrected for an area of 1 cm2.

Download Full Size | PDF

Fig. 6.
Fig. 6. Comparison of the wave-front PSFs (a) uncorrected and (b) corrected in the area of 1 cm2.

Download Full Size | PDF

Tables (1)

Tables Icon

Table 1. Experimental and Theoretical Response Time of a Parallel-Aaligned LC Ccell

View Table

Equations (6)

Equations on this page are rendered with MathJax. Learn more.

J = exp ( − j ϕ ) [ ( α γ ) sin ( γ ) cos ( γ ) + j ( β γ ) sin ( γ ) − cos ( γ ) + j ( β γ ) sin ( γ ) ( α γ ) sin ( γ ) ] ,
T = ζ [ cos α cos γ + ( α γ ) sin α sin γ ] 2 + [ β γ sin γ cos ( α + 2 ψ 1 ) ] 2 ,
δ = β − arg E x ,
T parallel = 1 , δ = 2 π d λ ( n e ( V ) − n o ) .
τ on = η d 2 ⁄ [ π 2 K 11 ( V 2 ⁄ V c 2 − 1 ) ] ,
τ off = η d 2 ⁄ ( π 2 K 11 ) ,
Select as filters
Select Topics Cancel
Top
       
© Copyright 2024 | Optica Publishing Group. All rights reserved, including rights for text and data mining and training of artificial technologies or similar technologies.
Privacy | Terms of Use