Celebrating Scholarship and Creativity Day (2018-)
Document Type
Thesis
Publication Date
5-1-2025
Disciplines
Physics
Advisor
Greg Taft
Abstract
An attempt was made to measure the fluorescence lifetime of bulk cadmium sulfide excited by two-photon absorption. The excitation source was an 800-nm unamplified Ti:sapphire laser that produced 50-fs pulses at a repetition rate of 82 MHz. An acousto-optic modulator (AOM) driven by a waveform generator was used as a pulse-picking device. A sufficiently fast AOM could pick a single pulse from the pulse train to excite the cadmium sulfide. Due to limitations on the speed of the available AOM, it was not possible to pick a single pulse. Instead, packets with a minimum of three pulses could be picked from the pulse train. Another difficulty was that the cadmium sulfide fluorescence was not intense enough to be measured with the available photodiode detectors. Future work could be conducted using a faster AOM and a sensitive single-photon counter to measure the fluorescence lifetime.
Recommended Citation
Schierts, Grady, "Fluorescence Lifetime of Bulk Cadmium Sulfide Excited by Two-Photon Absorption" (2025). Celebrating Scholarship and Creativity Day (2018-). 323.
https://digitalcommons.csbsju.edu/ur_cscday/323