Extinction enhancement and nonlinear near-resonant absorption of potassium polytitanate nanoplatelets were experimentally studied in the near-UV region. Phenomenological models such as the one-oscillator Lorentz model for dielectric function and the two-level model with the depleted ground state were used to interpret the experimental data. The introduced model parameters demonstrate the adequately high sensitivity to variations in nanoplatelet morphology and chemical environment.
© 2012 Optical Society of America
Original Manuscript: February 1, 2012
Revised Manuscript: March 17, 2012
Manuscript Accepted: March 19, 2012
Published: June 1, 2012
Dmitry A. Zimnyakov, Olga V. Ushakova, Alexander V. Gorokhovsky, Elena V. Tretyachenko, Elena A. Isaeva, Anna A. Isaeva, and Alexander B. Pravdin, "Resonant scattering and absorption in the titanate-based nanoplatelet dispersions in near ultraviolet region," Appl. Opt. 51, 3675-3683 (2012)