Self referencing attosecond interferometer with zeptosecond precision
Year: 2019
Type: article
Abstract: seconds). We create two replicas of a driving femtosecond pulse which share the same optical path except at the focus where they converge to two foci. An attosecond pulse train emerges from each focus through the process of high harmonic generation. The two attosecond pulse trains from each focus interfere in the far field producing a clear interference pattern in the extreme ultraviolet region. By controlling the relative optical phase (carrier envelope phase for pulsed fields) between the two driving laser pulses we are able to actively influence the delay between the pulses and are able to perform very stable and precise pump-probe experiments. Because of the phase shaping operation occurs homogeneously across the entire spatial profile, we effectively create two indistinguishable intense laser pulses or a common path interferometer for attosecond pulses. Commonality across the two beams means that they are extremely stable to environmental and mechanical fluctuations up to a Rayleigh range from the focus. In our opinion this represents an ideal source for homodyne and heterodyne spectroscopic measurements with sub-attosecond precision.
Source: Optics Express
DOI: 10.1364/oe.27.022960
Authors: Jan Tross, Georgios Kolliopoulos, Carlos A. Trallero-Herrero
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,270
Awards: G222768804, COMPLETE PHOTOIONIZATION SPECTROSCOPY IN THE ATTOSECOND REGIME, COMPLETE PHOTOIONIZATION SPECTROSCOPY IN THE ATTOSECOND REGIME, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES, ATOMIC PHYSICS WITH HIGHLY CHARGED IONS, STRUCTURE AND DYNAMICS OF ATOMS, IONS, MOLECULES AND SURFACES
OpenAlex ID: W2966453434