67. Observation of spatial distribution of laser-induced refractive index change in dye-doped liquid crystals, H. Ono and H. Saeki, Liq. Cryst. 28 (2001) 1775-1778.


Spatial distributions of photothermal refractive index changes in dye-doped liquid crystals were determined by an optical interferometric method. The refractive index change of the order of 10-1, including spatial distribution, was estimated by the described experimental technique. The absolute value of the refractive index change was proportional to the pump beam power, and the diameter of the index distribution was slightly larger than that of the pump laser beam due to heat conduction.

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