11 December 2001 Communication-wavelength (1.55 μm) laser-induced refractive index change in nematic liquid crystalline films
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Abstract
We have studied the optical nonlinearities of aligned nematic liquid crystalline films in the near IR communication spectral region (1.55 micrometers ). The measured refractive index coefficients are on the order of 10-3 cm2/W. The origins of the refractive index changes are thermal indexing effect and director axis reorientation. Phase modulation of several (pi) s can be generated with mW-power near IR lasers in micron thick films.
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Iam-Choon Khoo, Iam-Choon Khoo, Malgosia Kaczmarek, Malgosia Kaczmarek, Min-Yi Shih, Min-Yi Shih, Atsushi Shishido, Atsushi Shishido, Jianwu Ding, Jianwu Ding, Yana Zhang, Yana Zhang, Michael V. Wood, Michael V. Wood, } "Communication-wavelength (1.55 μm) laser-induced refractive index change in nematic liquid crystalline films", Proc. SPIE 4463, Liquid Crystals V, (11 December 2001); doi: 10.1117/12.449937; https://doi.org/10.1117/12.449937
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