OSA's Digital Library

Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 13 — May. 1, 2006
  • pp: 3136–3143

Spiking voltages for faster switching of nematic liquid-crystal light modulators

Xiaodong Xun, Doo Jin Cho, and Robert W. Cohn  »View Author Affiliations

Applied Optics, Vol. 45, Issue 13, pp. 3136-3143 (2006)

View Full Text Article

Enhanced HTML    Acrobat PDF (418 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Electrical address circuits developed for driving fast-switching ferroelectric liquid-crystal spatial light modulators (SLM) can be programmed to increase the speed of much slower responding nematic liquid-crystal SLMs. Using an addressing circuit that can switch as fast as 0.164   ms , voltages are programmed for values of phase that exceed the desired phase, and when the phase reaches the desired value, the voltage is switched to the required steady-state voltage. For a SLM that has a phase range of 3.5 π and that is programmed over a 2 π range, switching speed is reduced from 400   ms to between 71 and 77  ms . The speedup algorithm is applied to each pixel of the SLM together with a digital correction for a spatially nonuniform phase.

© 2006 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(230.3720) Optical devices : Liquid-crystal devices
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Optical Devices

Original Manuscript: May 4, 2005
Revised Manuscript: August 19, 2005
Manuscript Accepted: September 7, 2005

Xiaodong Xun, Doo Jin Cho, and Robert W. Cohn, "Spiking voltages for faster switching of nematic liquid-crystal light modulators," Appl. Opt. 45, 3136-3143 (2006)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. Boulder Nonlinear Systems, Inc.; http://www.bnonlinear.com/products/XYphase/data/XYPhase.pdf
  2. P. J. Bos and K. R. Beran, "The pi-cell, a fast liquid-crystal optical switching device," Mol. Cryst. Liq. Cryst. 113, 329-339 (1984). [CrossRef]
  3. A. K. Kirby and G. D. Love, "Fast, large and controllable phase modulation using dual frequency liquid crystals," Opt. Express 12, 1470-1475 (2004). [CrossRef] [PubMed]
  4. S. T. Wu and C. S. Wu, "High-speed liquid-crystal modulators using transient nematic effect," J. Appl. Phys. 65, 527-532 (1989). [CrossRef]
  5. J. E. Stockley, Boulder Nonlinear Systems, 450 Courtney Way, No. 107, Lafayette, Colo. 80026 (personal communication, 2005).
  6. H. Melville, G. F. Milne, G. C. Spalding, W. Sibbett, K. Dholakia, and D. McGloin, "Optical trapping of three-dimensional structures using dynamic holograms," Opt. Express 11, 3562-3567 (2003). [CrossRef] [PubMed]
  7. D. J. Cho, S. T. Thurman, J. T. Donner, and G. M. Morris, "Characteristics of a 128 × 128 liquid-crystal spatial light modulator for wave-front generation," Opt. Lett. 23, 969-971 (1998). [CrossRef]
  8. X. Xun and R. W. Cohn, "Phase calibration of spatially nonuniform spatial light modulators," Appl. Opt. 43, 6400-6406 (2004). [CrossRef] [PubMed]
  9. S. T. Wu, "Liquid Crystals" in Handbook of Optics Vol. 2, M.Bass, E.W.Van Stryland, D.R.Williams, and W.L.Wolfe, eds. (McGraw-Hill, 1995), Chap. 14, pp. 14.12-14.17.
  10. R. W. Cohn, "Fundamental properties of spatial light modulators for the approximate optical computation of Fourier transformations: a review," Opt. Eng. 40, 2452-2463 (2001). [CrossRef]
  11. A video (avi format) at http://pyramid.spd.louisville.edu/∼eri/paperslowbarpres/speedup.avi shows the transient diffraction patterns with a 70 ms spiking frame without spiking (movie on left) and with spiking (movie on right). Figures 7(a) and 7(b) shows steady state images with the same field of view as the two movies in the avi file.
  12. X. Xun, X. Chang, and R. W. Cohn, "System for demonstrating arbitrary multi-spot beam steering from spatial light modulators," Opt. Express 12, 260-268 (2004). [CrossRef] [PubMed]

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.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited