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Singly, doubly and triply resonant multiphoton processes involving autoionizing states in magnesium

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  • Using The R-Matrix Floquet Theory We Have Carried Out Non-Perturbative
  • Ab Initio One- And Two-Colour Calculations Of The Multiphoton Ionization Of Magnesium With The Laser
  • Good Agreement Is Obtained With Previous Calculations In The Low-Intensity Regimes
  • The Single-Photon Ionization From The 3S3P P Excited State Of Magnesium Has Been Studied In The Vici
  • Laser-Induced Degenerate States (Lids) Are Observed For Modest Laser Intensities
  • By Adding A Second Laser Which Resonantly Couples The 3P S = And 3P3D P Autoionizing Levels
  • We Show That
  • Due To The Small Width Of The 3P3D P State
  • Lids Occur Between This State And The 3S3P P State At Intensities Of The First Laser Below 10 W Cm
  • We Next Investigate The Case In Which The First Laser Induces A Resonant Two-Photon Coupling Between
  • While The Second Laser Again Resonantly Couples The Respective 3P S And 3P3D P Autoionizing States
  • At Weak Intensities
  • Our Calculations Compare Favourably With Recent Experimental Data And Calculations
  • We Show That When The Intensity Of The First Laser Is Increased
  • The Effect Of An Additional Autoionizing State
  • The 4S5S S State
  • Becomes Significant
  • This State Is Coupled To The 3P3D P Autoionizing Level By One Photon
  • Inducing A Triply Resonant Processes
  • We Show That Lids Occur Among The Three Autoionizing Levels And We Discuss Their Effect On The Decay
  • We Consider Dressed Two- And Three-Level Atoms Which Can Be Used To Model The Results Of Our Calcula
  • Ecology
  • Medicine


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