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Anne L'Huillier

Anne l'Huillier

Professor

Anne L'Huillier

Second-generation High-Order Harmonic Sources — From CPA to OPCPA

Author

  • Piotr Rudawski

Summary, in English

This thesis presents two sources of extreme ultraviolet (XUV) radiation based on

high-order harmonic generation (HHG) in gases. The sources were developed for

experiments requiring high-flux harmonic beams or HHG pulses at high-repetition

rate. These were used experimentally to image nano-scale objects. The high-flux HHG

source was used for digital in-line holography, and the high-repetition rate source for

photoemission electron microscopy. In addition, a conceptual design for a high-flux

gas beamline for a large scale facility, Extreme Light Infrastructure - Attosecond Light

Pulse Source, is described.



The work focuses on the construction and development of the driving laser systems

and the HHG sources, as well as on the optimization of their performance. The thesis

describes the two lasers used to drive the HHG sources: a high-power laser system

and a newly built optical parametric chirped pulse amplification (OPCPA) system.

The two systems are both based on the chirped pulse amplification technique, but the

amplification process is carried out in different ways. The high-power laser system is

based on linear amplification in Ti:Sapphire while the OPCPA system uses nonlinear

amplification via difference frequency generation.



Furthermore, the use of multi-color driving fields to manipulate the generation process,

both from the microscopic and the macroscopic points of view, was investigated.

The combination of the fundamental field with its second harmonic in a non-collinear

geometry allows us to probe and control macroscopic properties. The addition of loworder

odd harmonics in a collinear geometry results in an enhancement of the single

atom response.

Department/s

  • Atomic Physics

Publishing year

2014

Language

English

Document type

Dissertation

Topic

  • Atom and Molecular Physics and Optics

Keywords

  • Optical parametric chirped pulse amplification
  • Fysicumarkivet A:2014:Rudawski
  • Chirped pulse amplification
  • High-order harmonic generation
  • Attosecond pulse

Status

Published

Supervisor

  • Anne L'Huillier

ISBN/ISSN/Other

  • ISBN: 978-91-7473-940-4

Defence date

9 May 2014

Defence time

10:15

Defence place

Lecture hall Rydbergsalen, Department of Physics, Professorsgatan 1, Lund University Faculty of Engineering

Opponent

  • Eric Cormier (Prof.)