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Title: Interplay of mulitphoton and tunneling ionization in short-wavelength-driven high-order harmonic generation

Abstract

High-order harmonic generation efficiency is theoretically modeled and compared with experiments using 400 and 800 nm driver pulses. It is shown that, for a short drive wavelength and a Keldysh parameter larger than 1, the Ammosov-Delone-Krainov (ADK) ionization model does not give a good agreement between theory and experiment. Since the ADK ionization model only accounts for tunnel ionization, it underestimates the yield of low-order harmonics from the wings of the driver pulse. In contrast, the Yudin-Ivanov ionization model [Phys. Rev. A 64, 013409 (2001)], which accounts for both tunnel and multiphoton ionization, gives much better agreement with the experimental results.

Authors:
; ; ;  [1];  [2];  [1];  [3]
  1. Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  2. Departamento de Fisica, Universidade Federal de Pernambuco, 50670-901, Recife, Pernambuco (Brazil)
  3. (Germany)
Publication Date:
OSTI Identifier:
22051338
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 84; Journal Issue: 1; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; HARMONIC GENERATION; HARMONICS; PHOTOIONIZATION; PULSES; TUNNEL EFFECT; WAVELENGTHS

Citation Formats

Gkortsas, Vasileios-Marios, Bhardwaj, Siddharth, Lai, Chien-Jen, Hong, Kyung-Han, Falcao-Filho, Edilson L., Kaertner, Franz X., and DESY-Center for Free-Electron Laser Science and Hamburg University, 22607 Hamburg. Interplay of mulitphoton and tunneling ionization in short-wavelength-driven high-order harmonic generation. United States: N. p., 2011. Web. doi:10.1103/PHYSREVA.84.013427.
Gkortsas, Vasileios-Marios, Bhardwaj, Siddharth, Lai, Chien-Jen, Hong, Kyung-Han, Falcao-Filho, Edilson L., Kaertner, Franz X., & DESY-Center for Free-Electron Laser Science and Hamburg University, 22607 Hamburg. Interplay of mulitphoton and tunneling ionization in short-wavelength-driven high-order harmonic generation. United States. doi:10.1103/PHYSREVA.84.013427.
Gkortsas, Vasileios-Marios, Bhardwaj, Siddharth, Lai, Chien-Jen, Hong, Kyung-Han, Falcao-Filho, Edilson L., Kaertner, Franz X., and DESY-Center for Free-Electron Laser Science and Hamburg University, 22607 Hamburg. Fri . "Interplay of mulitphoton and tunneling ionization in short-wavelength-driven high-order harmonic generation". United States. doi:10.1103/PHYSREVA.84.013427.
@article{osti_22051338,
title = {Interplay of mulitphoton and tunneling ionization in short-wavelength-driven high-order harmonic generation},
author = {Gkortsas, Vasileios-Marios and Bhardwaj, Siddharth and Lai, Chien-Jen and Hong, Kyung-Han and Falcao-Filho, Edilson L. and Kaertner, Franz X. and DESY-Center for Free-Electron Laser Science and Hamburg University, 22607 Hamburg},
abstractNote = {High-order harmonic generation efficiency is theoretically modeled and compared with experiments using 400 and 800 nm driver pulses. It is shown that, for a short drive wavelength and a Keldysh parameter larger than 1, the Ammosov-Delone-Krainov (ADK) ionization model does not give a good agreement between theory and experiment. Since the ADK ionization model only accounts for tunnel ionization, it underestimates the yield of low-order harmonics from the wings of the driver pulse. In contrast, the Yudin-Ivanov ionization model [Phys. Rev. A 64, 013409 (2001)], which accounts for both tunnel and multiphoton ionization, gives much better agreement with the experimental results.},
doi = {10.1103/PHYSREVA.84.013427},
journal = {Physical Review. A},
issn = {1050-2947},
number = 1,
volume = 84,
place = {United States},
year = {2011},
month = {7}
}