TY - JOUR
T1 - Bistable spatial light modulator using guest-host liquid crystal and Bi12GeO20 layers
AU - Fujikake, Hideo
AU - Takizawa, Kuniharu
AU - Kikuchi, Hiroshi
AU - Okada, Masakatsu
PY - 1990/12/1
Y1 - 1990/12/1
N2 - Bistable spatial light modulators (BSLMs) composed of a liquid crystal (LC) cell and a photoconductor, which have two-dimensional optical nonlinear functions (hysteresis, differential gain and limiting), are useful for optical computing and image processing. This paper reports optical parallel logic operations using a new type of compact transmission-mode BSLM which has the advantages of spatial uniformity and a simple device structure. The BSLM consists of a guest-host (GH) LC layer which contains nematic LC and dichroic dye molecules twisted by 90° between two alignment layers, a Bi12GeO20 (BGO) crystal layer with a thickness of 1.7 mm, which is conductive under blue light illumination, and transparent indium tin oxide electrodes. The bistable properties of the BSLM can be used for various aspects of nonlinear image processing such as logic operations, intensity level thresholding and memory.
AB - Bistable spatial light modulators (BSLMs) composed of a liquid crystal (LC) cell and a photoconductor, which have two-dimensional optical nonlinear functions (hysteresis, differential gain and limiting), are useful for optical computing and image processing. This paper reports optical parallel logic operations using a new type of compact transmission-mode BSLM which has the advantages of spatial uniformity and a simple device structure. The BSLM consists of a guest-host (GH) LC layer which contains nematic LC and dichroic dye molecules twisted by 90° between two alignment layers, a Bi12GeO20 (BGO) crystal layer with a thickness of 1.7 mm, which is conductive under blue light illumination, and transparent indium tin oxide electrodes. The bistable properties of the BSLM can be used for various aspects of nonlinear image processing such as logic operations, intensity level thresholding and memory.
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M3 - Conference article
AN - SCOPUS:0025535078
VL - 1359
SP - 25
EP - 26
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
SN - 0277-786X
T2 - 1990 International Topical Meeting on Optical Computing - OC '90
Y2 - 8 April 1990 through 12 April 1990
ER -