Date of Award
Master of Science
Thang Ba Hoang
Plasmonic nanostructures such as gold nanprods and gold nanostars are profoundly used in photoluminescence measurement and coherent random lasing. Radiative processes such as photoluminescence emission of nanomaterials can be profoundly modified by their interaction with plasmonic nanostructures. In the first part of this thesis, we demonstrate the photoluminescence enhancement, up to 25 times, of CdSe quantum dots which are sandwiched between a gold nanorod and a thin gold film. Our results show a promise for applications in optoelectronics and nanophotonics. Random lasing occurs as a result of coherent optical feedback from multiple scattering centers. In the second part of this thesis, we demonstrate that plasmonic gold nanostars are efficient light scattering centers, exhibiting strong field enhancement at their nanotips, which assists in a very narrow bandwidth and highly amplified coherent coherent random lasing with a low lasing thereshold.
dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.
Khatri, Dipendra Singh, "Photoluminescence Measurements and Coherent Random Lasing by Using Plasmonic Nanostructures" (2020). Electronic Theses and Dissertations. 2101.