Quasi-phase-matching of laser harmonics using variable multi-jet plasmas
R. A. GaneevOphthalmology and Advanced Laser Medical Center, Saitama Medical University, Saitama 350-0495, JapanMasatoshi SuzukiOphthalmology and Advanced Laser Medical Center, Saitama Medical University, Saitama 350-0495, JapanP. V. RedkinSamarkand State University, Samarkand 140104, UzbekistanHiroto KurodaOphthalmology and Advanced Laser Medical Center, Saitama Medical University, Saitama 350-0495, Japan
ABI
Abstract
In this paper, we demonstrate the enhancement of high-order harmonics induced by the quasi-phase-matching (QPM) in different spectral ranges. The tuning of QPM harmonics was accomplished by changing the sizes of multiple plasma jets. The 40× and 15× enhancement factors for the QPM harmonics were achieved in the silver and manganese multiple-jet plasmas for the 35th and 55th harmonics.
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