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 7 of 7 for “"Pulse characterization"”.
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High current pulse characterization of semiconductor devices
… system, the exponential-edge transmission line pulse system (EETLP), is presented. EETLP generates 100 ns square pulses with a variable, exponentially decaying falling edge. When applied to an ESD protection device, the pulse shape allows for capture of both the transient and quasi-steady-state …
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Engineering strong-field phenomena : from attosecond pulse characterization to nanostructured electron emitters
… ultrafast laser sources improve in terms of peak pulse energy and wavelength tunability, applications that utilize high peak electromagnetic field strengths to generate attosecond pulses of both photons and electrons are becoming readily available. Furthermore, through the coupling of these …
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Modeling generation and characterization of attosecond pulses
… EUV sources that can produce attosecond pulses. These pulses can serve as a probe to resolve atomic attosecond dynamics and image atomic orbitals and molecular motion. Due to high spatial and temporal coherence, high-order harmonic radiation can also be used to seed free electron lasers, …
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Multidimensional Spectroscopy With Femtosecond Pulses
… peak power, and bandwidth of 50 femtosecond pulses gives them capabilities to extract information unattainable with first order techniques. Despite the resolution difficulty due to the bandwidth, it is demonstrated both theoretically and experimentally on two contrasting spectral regions that …
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Short pulse generation from semiconductor lasers: characterization, modeling and applications
… been carried out on the generation of optical pulses, with duration of tens of picoseconds, from semiconductor lasers. The work is focused on 1550 nm Vertical Cavity Surface Emitting Lasers (VCSEL), which are promising optical transmitters due to their advantageous characteristics in the …
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Attosecond Wave Packet Metrology
Attosecond pulses allow the study of electrons on their natural timescale. They are created from the interaction of atoms with ultrashort, intense laser pulses whose electric field approaches the strength of inner-atomic electric fields. This thesis presents experiments around the generation, …
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Transition from transparency to hole-boring in relativistic laser-solid interactions at the Texas Petawatt
… between a relativistically intense laser pulse and a solid density target. On short time scales the laser field increases the electron quiver velocity, increasing the effective electron mass which increases the plasma frequency at a given electron density. This leads to transmission of a …