Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Femtosecond pulse shaping"”.
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Femtosecond pulse shaping for enhanced optical imaging and control of cells
… explores the possibility of using temporal pulse shaping in order to improve the selectivity with which optically sensitive molecules can be activated. It is demonstrated that linearly chirped pulses and dark pulses have the potential to improve selectivity by exclusively controlling the …
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Two-dimensional ultrafast pulse shaping and its application to coherent control and spectroscopy
This thesis develops powerful new methods for shaping femtosecond laser pulses in two dimensions and explores their application to coherent control of propagating lattice excitations and degenerate four-wave mixing spectroscopy. Pulse shaping in two dimensions is achieved by manipulating the …
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Coherent multi-exciton dynamics in semiconductor nanostructures via two-dimensional Fourier transform optical spectroscopy
… can be accessed and probed. A spatiotemporal femtosecond pulse shaping technique has been used to overcome the challenge of control over multiple, noncollinear phase-coherent optical Fields in the experimental geometries that are used to isolate selected signal contributions through wavevector …
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Coherence in nanostructured excitons
… a unique multi-dimensional spectrometer using femtosecond pulse shaping. I present results on two classes of artificial nanostructures: supramolecular J-aggregates and semiconductor quantum wells. In J-aggregate thin films I determined that coherence is controlled by thermal dephasing rather …
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Adaptive control of electronic excitation utilizing ultrafast laser pulses
… during and after the interaction of matter with pulses of femtosecond laser radiation. The experiments presented here were performed in the gas phase and involve one atomic and several model molecular systems. Absorption of femtosecond laser radiation by these systems induces an electronic …