Phase-matched second-harmonic generation via laser plasma interaction. (14th January 2015)

• Record Type: Journal Article
• Authors: Kumar Verma, Nirmal; Agrawal, Ekta; Jha, Pallavi
• Is Part Of: Europhysics letters. Volume 109:Number 1(2015:Jan.)
• Publication Date: 2015-01-14
• Subjects: 52.38.-r -- 42.65.Ky; Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/109/15001
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: 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.