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Title: On the possibility of the generation of high harmonics with photon energies greater than 10 keV upon interaction of intense mid-IR radiation with neutral gases

Based on the analytical quantum-mechanical description in the framework of the modified strong-field approximation, we have investigated high harmonic generation of mid-IR laser radiation in neutral gases taking into account the depletion of bound atomic levels of the working medium and the electron magnetic drift in a high-intensity laser field. The possibility is shown to generate high-order harmonics with photon energies greater than 10 keV under irradiation of helium atoms by intense femtosecond laser pulses with a centre wavelength of 8 – 10.6 μm. (interaction of radiation with matter)
Authors:
; ;  [1]
  1. Institute of Applied Physics, Russian Academy of Sciences, Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
22375918
Resource Type:
Journal Article
Resource Relation:
Journal Name: Quantum Electronics (Woodbury, N.Y.); Journal Volume: 44; Journal Issue: 5; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; APPROXIMATIONS; ELECTRONS; HARMONIC GENERATION; HARMONICS; HELIUM; INFRARED RADIATION; KEV RANGE 10-100; LASER RADIATION; LASERS; PHOTONS; PULSED IRRADIATION; PULSES; QUANTUM MECHANICS