eprintid: 23204
rev_number: 13
eprint_status: archive
userid: 3199
dir: disk0/00/02/32/04
datestamp: 2017-07-07 07:39:51
lastmod: 2017-07-13 08:59:45
status_changed: 2017-07-07 07:39:51
type: doctoralThesis
metadata_visibility: show
creators_name: Mi, Yonghao
title: Strong-field ionization of atoms and molecules with two-color laser pulses
subjects: 530
divisions: 130001
adv_faculty: af-13
cterms_swd: Strong-field ionization
cterms_swd: atoms and molecules
cterms_swd: two-color laser pulses
abstract: In this work the laser-induced ionization of atoms and simple molecules is experimentally investigated by using a Reaction Microscope and sculpted laser pulses. The Reaction Microscope allows to distinguish different ionization channels with the ion-electron coincidence technique. The sculpted laser pulses, which are realized by superposition of two laser pulses with different colors and adjustable relative phase, play a key role in controlling the electronic wavepacket with high temporal resolution.

With these two methods, phase-controllable strong-field ionization of Ar and N2 is studied and electrons emitted from single ionization of Ar and N2 are compared. Moreover,
channel-selective electron emission is investigated for the fundamental molecular case of H2. A significant difference in the low-energy photoelectron yield between bound and
dissociative ionization channel is observed, proving the Born-Oppenheimer-based two-step process is not complete. Finally, this observation is understood as the population and subsequent decay of autoionizing states by further investigations with the two-color laser pulses.
date: 2017
id_scheme: DOI
id_number: 10.11588/heidok.00023204
ppn_swb: 1659361001
own_urn: urn:nbn:de:bsz:16-heidok-232042
date_accepted: 2017-06-28
advisor: HASH(0x556120ca9e00)
language: eng
bibsort: MIYONGHAOSTRONGFIEL2017
full_text_status: public
place_of_pub: Heidelberg, Germamy
citation:   Mi, Yonghao  (2017) Strong-field ionization of atoms and molecules with two-color laser pulses.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/23204/1/Thesis_YonghaoMi.pdf