Document Type
Thesis
Publication Date
5-3-2024
Disciplines
Optics | Physics
Advisor
Greg Taft
Abstract
The fluorescence of bulk cadmium sulfide and cadmium sulfide nanoparticles were compared. This was done using an 800-nm, unamplified Ti:sapphire laser producing 50-fs pulses. The pulses were frequency doubled using a beta barium borate (BBO) crystal. The 400-nm beam was used to induce fluorescence in the nanoparticles, while the original 800-nm beam was used to induce fluorescence in the bulk CdS by two-photon absorption. The bulk CdS showed a single fluorescent peak at 523 nm. The nanoparticles showed fluorescence at various wavelengths across the visible spectrum. In general, the nanoparticles showed a broad fluorescent spectrum between 500 nm and 750 nm, and a spike between 800 nm and 900 nm. These values shifted depending upon the size of the nanoparticles used. Pump-probe measurements showed a significant increase in the transmission of probe light through the nanoparticle solution when the pump and probe pulses arrived simultaneously.
Recommended Citation
Goranson, Jacob, "Comparison of the fluorescence of bulk cadmium sulfide and cadmium sulfide nanoparticles" (2024). Celebrating Scholarship and Creativity Day (2018-). 255.
https://digitalcommons.csbsju.edu/ur_cscday/255