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Frequency up-shifting of laser pulses by copropagating ionization fronts

Journal Article · · Physical Review A. General Physics; (United States)
; ;  [1]
  1. Beam Physics Branch, Plasma Physics Division, Naval Research Laboratory, Washington, DC (USA)
A method for up-shifting the frequency of a subpicosecond laser pulse that utilizes the interaction of the pulse with a co-propagating relativistic ionization front is examined. The induced frequency shift is found to initially scale linearly with the propagation time {tau}. Asymptotically, the frequency scales as {tau}{sup 1/2}. Phase-slippage limitations may be overcome by appropriately increasing the plasma density as a function of {tau}, thus allowing for substantially higher-frequency shifts.
OSTI ID:
5154937
Journal Information:
Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 44:6; ISSN 1050-2947; ISSN PLRAA
Country of Publication:
United States
Language:
English