14 May 2018 Nonlinear effects in colloidal nanoplatelets with two-dimensional electronic structure
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We have investigated the nonlinear absorption of CdSe-based nanoplatelets (NPLs) with different thicknesses of shell in the case of resonant one-photon stationary excitation of exciton transitions by nanosecond pulses of mode-locked Nd:YAP laser. Decrease in absorption at the wavelength of whether light hole – electron and heavy hole – electron exciton transitions was revealed. Induced changing of both absorption doublet components was attributed to phase space filling effect and exciton energy conversion mechanism.
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A. M. Smirnov, A. M. Smirnov, A. G. Golinskaya, A. G. Golinskaya, M. V. Kozlova, M. V. Kozlova, D. V. Przhiyalkovskii, D. V. Przhiyalkovskii, B. M. Saidjonov, B. M. Saidjonov, R. B. Vasiliev, R. B. Vasiliev, V. S. Dneprovskii, V. S. Dneprovskii, } "Nonlinear effects in colloidal nanoplatelets with two-dimensional electronic structure", Proc. SPIE 10684, Nonlinear Optics and its Applications 2018, 1068421 (14 May 2018); doi: 10.1117/12.2306999; https://doi.org/10.1117/12.2306999

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