Dissertation/Thesis Abstract

Coherent EUV light from high-order harmonic generation: Enhancement and applications to lensless diffractive imaging
by Paul, Ariel J., Ph.D., University of Colorado at Boulder, 2007, 155; 3273819
Abstract (Summary)

The first half of this thesis presents the first demonstration of quasi-phase matching in the coherent high-order harmonic conversion of ultrafast laser pulses into the EUV region of the spectrum. To achieve this quasi-phase matching, a novel method of fabricating hollow waveguides with a modulated inner diameter was developed. This technique lead to significant enhancements of EUV flux at wavelengths shorter than were previously accessible by known phase-matching techniques. In the second half of this thesis, the first tabletop demonstration of lensless diffractive imaging with EUV light is presented using HHG in a gas-filled hollow waveguide to provide coherent illumination. This tabletop microscope shows a spatial resolution of ∼ 200 nm and a large depth of field. Furthermore, the technique is easily scalable to shorter wavelengths of interest to biological imaging.

Indexing (document details)
Advisor: Kapteyn, Henry C., Murnane, Margaret M.
Commitee: DeGrand, Thomas, Lehnert, Konrad, Perkins, Thomas
School: University of Colorado at Boulder
Department: Physics
School Location: United States -- Colorado
Source: DAI-B 68/07, Dissertation Abstracts International
Source Type: DISSERTATION
Subjects: Optics
Keywords: Diffractive imaging, Harmonic generation, Lensless imaging, Ultraviolet
Publication Number: 3273819
ISBN: 9780549140108
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