Photoaddressing Of High Speed Liquid Crystal Spatial Light Modulators

Moddel, Garret; Johnson, Kristina M.; Handschy, Mark A.

doi:10.1117/12.939987

Cited by 21 publications

(2 citation statements)

References 4 publications

(7 reference statements)

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“…Fused silica optical flats are readily available and have a low density of mobile impurities which makes them compatible with a-Si:H technology. Moreover, we have found that their thermal expansion of 5.5x107 /°C is compatible with that of a-Si:H , i.e., 30x107 /°C. The technologies used for the glass flats and TCO are compatible with standard OASLM fabrication techniques so that no fabrication bottleneck exists.…”

Section: Class Flats and Tco Layersmentioning

confidence: 69%

<title>Bottlenecks in developing optically addressed SLMs with desirable performance</title>

Burdge

Perlmutter

Barbier

et al. 1993

Liquid Crystal Materials, Devices, and Applications II

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OASLMs incorporating an a-Si:H photosensor and ferroelectric liquid crystal have proved their high performance in optoelectronic processing systems. The final step in their development is to establish a long mean time between failures, consistent responsivity, gain, resolution, and gray level response. Some subtle properties of the alignment layers, the liquid crystals, and the operating conditions create bottlenecks to producing consistently performing devices. We examine these bottleneck issues and explore ways to extend the reliabifity of device performance.

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Section: Class Flats and Tco Layersmentioning

confidence: 69%

<title>Bottlenecks in developing optically addressed SLMs with desirable performance</title>

Burdge

Perlmutter

Barbier

et al. 1993

Liquid Crystal Materials, Devices, and Applications II

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“…Two kinds of the basic configuration of a-Si:H photosensors coupled with the twist nematic liquid crystallli,2], or with ferroelectric liquid crystal [3,4], or with electroclinic liquid crystal [5,6] are described by many authors. One is using an a-Si:H single filmphotoconductor [l2,3], the other is an a-Si:H photodiode [1,4].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Optimal Photosensor in A-Si:H Liquid Crystal Light Valves

Han

Qiao

et al. 1992

MRS Proc.

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The a-Si:H thin film is used for a photosensor in liquid crystal light valve (LCLV). A lumped element model for the layered a-Si:H LCLV is developed. It has been shown that the dark and photoresistances of the a-Si:H photosensor should be adjusted respectively to within the region between one order of magnitude higher and one order of magnitude lower than that of the liquid crystal(LC) layer to ensure a linear variation of the voltage across the LC with the intensity of the incident write-light beam. For obtaining an optimal operation condition of the LCLV, we can determine the concrete values of the dark resistance of the photosensor from the threshold voltage of the LCLV for the linear change of the LCLV's grey level and the applied voltage of the LCLV, and the photoresistance of the photosensor from the saturation voltage of the LC. As a result, the application of an a-Si:H film by optimization of the deposition condition indicates that the contrast of LCLV can be improved distinctively.

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Multiple-valued logic unit design using polarization-encoded optical shadow-casting

Alam

Karim

1993

Optics & Laser Technology

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Photoaddressing Of High Speed Liquid Crystal Spatial Light Modulators

Cited by 21 publications

References 4 publications

<title>Bottlenecks in developing optically addressed SLMs with desirable performance</title>

<title>Bottlenecks in developing optically addressed SLMs with desirable performance</title>

Investigation of Optimal Photosensor in A-Si:H Liquid Crystal Light Valves

Multiple-valued logic unit design using polarization-encoded optical shadow-casting

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