TY - GEN
T1 - Liquid crystal photorefractivity for reordering holographic gratings
AU - Khoo, Iam Choon
PY - 1996
Y1 - 1996
N2 - We present a detailed discussion of the fundamental mechanisms for recently observed persistent photorefractive effects in nematic liquid crystal films. A theoretical analysis of the various space charge fields, dielectric torques, and estimates of their magnitudes and critical assessment of their roles in the observed holographic grating formation process are presented. In dye- or Fullerene C 60-doped films, it is observed that the induced director axis and refractive index grating could persist indefinitely. Furthermore, these stored gratings can be electrically switched on and off at ms-subms speed.
AB - We present a detailed discussion of the fundamental mechanisms for recently observed persistent photorefractive effects in nematic liquid crystal films. A theoretical analysis of the various space charge fields, dielectric torques, and estimates of their magnitudes and critical assessment of their roles in the observed holographic grating formation process are presented. In dye- or Fullerene C 60-doped films, it is observed that the induced director axis and refractive index grating could persist indefinitely. Furthermore, these stored gratings can be electrically switched on and off at ms-subms speed.
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M3 - Conference contribution
AN - SCOPUS:0029762573
SN - 0819420255
SN - 9780819420251
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 68
EP - 78
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Shashidhar, Ranganathan
T2 - Liquid Crystal Materials, Devices, and Applications IV
Y2 - 31 January 1996 through 1 February 1996
ER -