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Development and spatio-spectral mapping of a capillary high harmonic source

Development and spatio-spectral mapping of a capillary high harmonic source
Development and spatio-spectral mapping of a capillary high harmonic source
This work describes the development and operation of a capillary based High Harmonic Generation (HHG) system. Using this system a coherent beam of soft x-rays is generated, studied and applied. A series of experiments was then undertaken in order to deepen our knowledge of the HHG process and to optimise the performance of the source. Notable contributions made to the field are: A novel laser mode quality measuring device. (Laser mode quality strongly affects the efficiency of the capillary launch). A study of the spectral output of the system as a function of gas pressure, laser power, and laser spectral phase. An analysis technique for recovering spatially-resolved spectral information about a beam by studying the Fresnel diffraction pattern produced at an array of apertures. A study of pulse compression using cascaded quadratic nonlinearity for spectral broadening.
University of Southampton
Praeger, Matthew
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Praeger, Matthew
84575f28-4530-4f89-9355-9c5b6acc6cac
Brocklesby, William
c53ca2f6-db65-4e19-ad00-eebeb2e6de67

Praeger, Matthew (2008) Development and spatio-spectral mapping of a capillary high harmonic source. University of Southampton, School of Physics and Astronomy, Doctoral Thesis, 231pp.

Record type: Thesis (Doctoral)

Abstract

This work describes the development and operation of a capillary based High Harmonic Generation (HHG) system. Using this system a coherent beam of soft x-rays is generated, studied and applied. A series of experiments was then undertaken in order to deepen our knowledge of the HHG process and to optimise the performance of the source. Notable contributions made to the field are: A novel laser mode quality measuring device. (Laser mode quality strongly affects the efficiency of the capillary launch). A study of the spectral output of the system as a function of gas pressure, laser power, and laser spectral phase. An analysis technique for recovering spatially-resolved spectral information about a beam by studying the Fresnel diffraction pattern produced at an array of apertures. A study of pulse compression using cascaded quadratic nonlinearity for spectral broadening.

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More information

Published date: March 2008
Organisations: University of Southampton, Optoelectronics Research Centre, Physics & Astronomy, Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 66192
URI: http://eprints.soton.ac.uk/id/eprint/66192
PURE UUID: 548e8259-2df7-4c48-9600-aa362166781e
ORCID for Matthew Praeger: ORCID iD orcid.org/0000-0002-5814-6155
ORCID for William Brocklesby: ORCID iD orcid.org/0000-0002-2123-6712

Catalogue record

Date deposited: 20 May 2009
Last modified: 13 Aug 2020 01:38

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