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Full-Text Articles in Physics
Exciton Dynamics And Many Body Interactions In Layered Semiconducting Materials Revealed With Non-Linear Coherent Spectroscopy, Prasenjit Dey
Exciton Dynamics And Many Body Interactions In Layered Semiconducting Materials Revealed With Non-Linear Coherent Spectroscopy, Prasenjit Dey
USF Tampa Graduate Theses and Dissertations
Atomically thin, semiconducting transition metal dichalogenides (TMDs), a special class of layered semiconductors, that can be shaped as a perfect two dimensional material, have garnered a lot of attention owing to their fascinating electronic properties which are achievable at the extreme nanoscale. In contrast to graphene, the most celebrated two-dimensional (2D) material thus far; TMDs exhibit a direct band gap in the monolayer regime. The presence of a non-zero bandgap along with the broken inversion symmetry in the monolayer limit brands semiconducting TMDs as the perfect candidate for future optoelectronic and valleytronics-based device application. These remarkable discoveries demand exploration of …
Multidimensional Spectroscopy Of Semiconductor Quantum Dots, Jason Michael Bylsma
Multidimensional Spectroscopy Of Semiconductor Quantum Dots, Jason Michael Bylsma
USF Tampa Graduate Theses and Dissertations
The coherent properties of semiconductor nanostructures are inherently difficult to measure and one-dimensional spectroscopies are often unable to separate inhomogeneous and homogeneous linewidths. We have refined and improved a method of performing multidimensional Fourier transform spectroscopy based on four-wave
mixing (FWM) experiments in the box geometry. We have modified our system with broadband beamsplitters in all interferometer arms, high-resolution translation stages and the ability to work in reflection geometry. By improving the phase-stability of our setup and scanning pulse delays with sub-optical cycle precision, we are able to
reproduce 2DFT spectra of GaAs multiple quantum wells. With the FWM signal …