Nonlinear optical characteristics of polymethine dyes
R. A. GaneevNPO Akadempribor, Academy of Sciences of Uzbekistan, Tashkent, 700125, UzbekistanR. I. TugushevNPO Akadempribor, Academy of Sciences of Uzbekistan, Tashkent, 700125, UzbekistanA. A. IshchenkoInstitute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev, 02094, UkraineN. A. DerevyankoInstitute of Organic Chemistry, National Academy of Sciences of Ukraine, Kiev, 02094, UkraineA. I. Ryasnyanskiı̆NPO Akadempribor, Academy of Sciences of Uzbekistan, Tashkent, 700125, UzbekistanT. UsmanovNPO Akadempribor, Academy of Sciences of Uzbekistan, Tashkent, 700125, Uzbekistan
ABI
Abstract
Nonlinear refraction, nonlinear absorption, and saturated absorption of a number of polymethine dyes are studied and their nonlinear optical parameters are measured by the Z-scan method (λ=1064 nm). Simultaneous occurrence of several nonlinear optical processes in the case of excitation of dye solutions by picosecond pulses is analyzed. Saturated absorption of dye solutions is considered in terms of different models.
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