Nonlinear optical properties of PbS quantum dots in boro-silicate glass |
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| Institution: | 1. Institute for Optical Materials and Technologies, Belarussian National Technical University, Bldg.17, #65 Nezavisimosti Ave, 220013 Minsk, Belarus;2. Belarussian State Technological University, Minsk, Belarus |
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| Abstract: | PbS quantum dots synthesis in boro-silicate glass is presented. Absorption bleaching of PbS quantum dots of ≈4 and ≈7 nm in diameter dispersed in this glass has been studied. Bleaching relaxation time of 20–30 ps, absorption saturation fluence of ≈5 mJ/cm2 and ground-state absorption cross-section of 2 ÷ 6 × 10?17 cm2 at the wavelengths corresponding to the first excitonic absorption band maxima are measured. |
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