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    Troubleshooting ultrashort pulse measurement: the coherent artifact and other issues

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    RHODES-DISSERTATION-2016.pdf (5.580Mb)
    Figure 10-4 Lighthouse simulated pulse.mp4 (486.2Kb)
    Figure 10-4 Lighthouse measured data.mp4 (775.9Kb)
    Figure 10-3 Spatial chirp propagation.mp4 (256.2Kb)
    Figure 10-3 Angular dispersion propagation.mp4 (259.2Kb)
    Figure 9-9 Spatial chirp.mp4 (100.6Kb)
    Figure 9-8 Pulse front tilt.mp4 (90.70Kb)
    Figure 9-7 Chirped pulse beating.gif (1.183Mb)
    Figure 9-6 Cubic spectral phase.gif (2.082Mb)
    Figure 9-5 Linearly chirped pulse.gif (1.382Mb)
    Date
    2016-03-14
    Author
    Rhodes, Michelle Ann
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    Abstract
    Theoretical limitations of several ultrashort pulse measurement techniques are investigated. Particular attention is paid to the consequences of averaging over many pulses of different shapes. Averaging over many pulses is a very common practice, and if the pulse shape varies then the measurement result will be incorrect. This issue, referred to as a coherent artifact, is simulated for frequency-resolved optical gating using several nonlinearities, spectral interferometry for direct electric field reconstruction, two-dimensional spectral shearing interferometry, self-referenced spectral interferometry using cross-polarized wave generation, and multiphoton intrapulse interference phase scan. The role of measurement feedback in identifying pulse-shape instability is explored where possible. Several techniques receive additional analysis, such as searching for ambiguities or simulating convergence conditions. In addition, a method for intuitively displaying spatiotemporally distorted pulses is explored and developed.
    URI
    http://hdl.handle.net/1853/58132
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    • Georgia Tech Theses and Dissertations [23403]
    • School of Physics Theses and Dissertations [605]

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