Phase- and intensity-resolved measurements of above threshold ionization by few-cycle pulses

Kuebel M, Arbeiter M, Burger C, Kling NG, Pischke T, Moshammer R, Fennel T, Kling MF, Bergues B (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Journal of Physics B-Atomic Molecular and Optical Physics Institute of Physics: Hybrid Open Access

Book Volume: 51

Article Number: 134007

Journal Issue: 13

DOI: 10.1088/1361-6455/aac584

Abstract

We investigate the carrier-envelope phase (CEP) and intensity dependence of the longitudinal momentum distribution of photoelectrons resulting from above threshold ionization of argon by few-cycle laser pulses. The intensity of the pulses with a center wavelength of 750 nm is varied in a range between 0.7 × 1014 and . Our measurements reveal a prominent maximum in the CEP-dependent asymmetry at photoelectron energies of 2 U P (U P being the ponderomotive potential), that is persistent over the entire intensity range. Further local maxima are observed around 0.3 and 0.8 U P. The experimental results are in good agreement with theoretical results obtained by solving the three-dimensional time-dependent Schrödinger equation. We show that for few-cycle pulses, the amplitude of the CEP-dependent asymmetry provides a reliable measure for the peak intensity on target. Moreover, the measured asymmetry amplitude exhibits an intensity-dependent interference structure at low photoelectron energy, which could be used to benchmark model potentials for complex atoms.

Involved external institutions

Ludwig-Maximilians-Universität (LMU) DE Germany (DE) Universität Rostock DE Germany (DE) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics DE Germany (DE)

How to cite

APA:

Kuebel, M., Arbeiter, M., Burger, C., Kling, N.G., Pischke, T., Moshammer, R.,... Bergues, B. (2018). Phase- and intensity-resolved measurements of above threshold ionization by few-cycle pulses. Journal of Physics B-Atomic Molecular and Optical Physics, 51(13). https://doi.org/10.1088/1361-6455/aac584

MLA:

Kuebel, M., et al. "Phase- and intensity-resolved measurements of above threshold ionization by few-cycle pulses." Journal of Physics B-Atomic Molecular and Optical Physics 51.13 (2018).

BibTeX: Download