Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Spectrum modification of high-order harmonic generation in a gas mixture of Ar and Kr

Not Accessible

Your library or personal account may give you access

Abstract

In this paper, we experimentally investigate a high-order harmonic generation (HHG) process in a gas mixture of Ar and Kr. Compared with HHG in a pure gas medium, strong modification of the HHG spectrum is observed when a second gas is injected. The final overall HHG spectrum is determined by the initial pressure of individual gas before mixing. Further analysis and simulation show that the observed HHG spectrum modification is possibly contributed by two processes. First, the broadband phase-matching condition among the same type of gas atoms is shifted by increasing or decreasing the ionization ratio of Kr and Ar in HHG from the gas mixture, respectively. Second, HHG generated from Ar and Kr interfere with each other and result in wavelength-dependent bandwidth narrowing and intensity fluctuation in the overall HHG spectrum. Our experiment shows that the relative phase modulation among the same and different types of gas atoms play various but important roles in the HHG process, which needs to be carefully considered in the high-flux extreme ultraviolet source generation or HHG-based molecular structure retrieval from a noble gas mixture.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
High harmonic generation in Ne and H2 gas mixtures

M. Sayrac, A. A. Kolomenskii, J. Strohaber, and H. A. Schuessler
J. Opt. Soc. Am. B 32(12) 2400-2405 (2015)

Enhanced XUV harmonics generated in mixed noble gases using three-color laser fields

Ganjaboy S. Boltaev, Rashid A. Ganeev, and Ali S. Alnaser
Opt. Express 32(1) 113-124 (2024)

Absolute gas density profiling in high-order harmonic generation

A. Comby, S. Beaulieu, E. Constant, D. Descamps, S. Petit, and Y. Mairesse
Opt. Express 26(5) 6001-6009 (2018)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved