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(a) SEM image and (b) measured transmission spectrum of the polystyrene opal sample with the sphere diameter of 350 nm.
(a) Experimental setup for characterization of all-optical switching in three-dimensional polystyrene photonic crystals by means of femtosecond pump-probe technique. (b) Fourier transform spectrum and (c) corresponding interferometric autocorrelation signal of the pump pulse laser, which shows a pulse duration of about 8 fs.
(a) Measured and (b) simulated transmittance change with respect to the time delay between pump and probe light. The wavelength of the probe light is 785 nm and the peak pump power is .
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