Experimental verification of a computer model for optimizing a liquid crystal display for spatial phase modulation

Gardner, MC; Kilpatrick, Robin E.; Day, SE; Renton, Robert E.; Selviah, David R.

doi:10.1088/1464-4258/1/2/336

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…To use TN-LC cell as a phase-only SLM, several system factors should be optimized. [13][14] Since TN-LC has necessary amplitude modulation response with respect to the applied voltages and the dynamic range of birefringence is so small that it is difficult to obtain full 2π phase modulation range. For optimal use of TN-LC cell as a phase modulator, the combination of TN-LC, polarizers, and wave plate is usually employed as shown in Fig.…”

Section: System Optimization With Genetic Feedback Tuning Loopmentioning

confidence: 99%

Dynamic light field synthesis using spatial light modulator: system optimization with genetic feedback tuning loop and optical implementation of iterative fractional Fourier transform algorithm

2006

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In this paper, our recent works on dynamic light field synthesis engineering using spatial light modulators are presented. The combination of optimization techniques in theoretical design methods and experimental methods with spatial light modulators is a main motivation of our study. The firstly discussed system is the genetic feedback tuning loop for the optimal system tuning and aberration compensation. The genetic algorithm is embedded into the light field synthesis system and the iterative system tuning procedure is devised for optimizing and tuning the real system. The secondly introduced topic is the experimental implementation of the iterative fractional Fourier transform algorithm for designing the phase profiles of phase holograms. The ath fractional Fourier transform and its inverse transform is optically implemented. The light field synthesis systems with optically implemented iterative fractional Fourier transform are proposed. In the proposed systems, using the phase-shifting digital holography technique, the phase profile of real light field is measured, and with phase spatial light modulator the light field is generated. It is shown that the diffraction image measured at each iteration step evolves to the optimal goal. Some experimental results validating the proposed schemes are presented. Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/26/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Proc. of SPIE Vol. 6310 630905-2 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/26/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx Proc. of SPIE Vol. 6310 630905-8 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/26/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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Section: System Optimization With Genetic Feedback Tuning Loopmentioning

confidence: 99%

Dynamic light field synthesis using spatial light modulator: system optimization with genetic feedback tuning loop and optical implementation of iterative fractional Fourier transform algorithm

2006

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“…In this paper, we embedded the genetic algorithm in the SLM system, simultaneously measuring the phase and amplitude modulation according to the applied voltage when controlling the rotation angles of the optics with motorized stages. Many techniques measuring the phase modulation of an SLM have been studied [16][17][18]. In this paper, a wavefront interferometer using double slits is applied.…”

Section: Introductionmentioning

confidence: 99%

Optimization of the spatial light modulation with twisted nematic liquid crystals by a genetic algorithm

2008

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An optimization technique determining the configuration of optical components in a spatial light modulator is proposed. We study a spatial light modulator composed of a twisted nematic liquid crystal, a polarization state generator, and a polarization state detector. To obtain the desired phase and amplitude modulations, four parameters of the polarization state generator and detector should be optimized. A genetic algorithm is applied in searching the configurations suitable to a given twisted nematic liquid crystal. By embodying the proposed technique, the evolution of the designed cost functions is proved.

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A new effective model for the director distribution of a twisted nematic liquid crystal cell

Wang

2005

J. Opt. A: Pure Appl. Opt.

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Experimental verification of a computer model for optimizing a liquid crystal display for spatial phase modulation

Cited by 6 publications

References 4 publications

Dynamic light field synthesis using spatial light modulator: system optimization with genetic feedback tuning loop and optical implementation of iterative fractional Fourier transform algorithm

Dynamic light field synthesis using spatial light modulator: system optimization with genetic feedback tuning loop and optical implementation of iterative fractional Fourier transform algorithm

Optimization of the spatial light modulation with twisted nematic liquid crystals by a genetic algorithm

A new effective model for the director distribution of a twisted nematic liquid crystal cell

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