Phase-matched second-harmonic generation via laser plasma interaction
Department of Physics, University of Lucknow - Lucknow-226007, India
Received: 27 August 2014
Accepted: 14 December 2014
When an intense laser pulse interacts with homogeneous plasma in the presence of a transverse, spatially distributed static electric field, a transverse current density oscillating at a frequency twice that of the laser pulse is set up. This leads to the generation of second-harmonic radiation. The periodicity of the applied static electric field allows the second-harmonic radiation to be phase-matched. It is shown that under phase-matched conditions, the efficiency of the second-harmonic radiation in the presence of the spatially distributed static electric field is significantly enhanced as compared to that obtained for a uniform static electric field.
PACS: 52.38.-r – Laser-plasma interactions / 42.65.Ky – Frequency conversion; harmonic generation, including higher-order harmonic generation
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