Investigation of Resonance-Enhanced High-Order Harmonics by Two-Component Laser-Produced Plasmas
Resonance-enhanced harmonics from laser-produced plasma plumes are an interesting phenomenon, whose underlying mechanism is still under debate. In particular, it is unclear whether the macroscopic dispersion properties of the plasma are the key factors for the formation of the enhancement. To shed l...
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doaj-4dcd8370b6c0416f81d8f7ae1b7a17062021-01-06T00:00:37ZengMDPI AGAtoms2218-20042021-01-0191110.3390/atoms9010001Investigation of Resonance-Enhanced High-Order Harmonics by Two-Component Laser-Produced PlasmasJingguang Liang0Mottamchetty Venkatesh1Ganjaboy S. Boltaev2Rashid A. Ganeev3Yu Hang Lai4Chunlei Guo5GPL, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaGPL, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaGPL, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaGPL, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaGPL, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaThe Institute of Optics, University of Rochester, Rochester, NY 14627, USAResonance-enhanced harmonics from laser-produced plasma plumes are an interesting phenomenon, whose underlying mechanism is still under debate. In particular, it is unclear whether the macroscopic dispersion properties of the plasma are the key factors for the formation of the enhancement. To shed light on this problem, we perform experiments with two-component plasmas, in which one of the components (tin) is known to be able to generate enhanced harmonics and the other component (lead) is known for altering the overall dispersion properties of the plasma medium. We compare the harmonics spectra from the plasma of pure tin and the plasma of tin/lead alloy. Depending on the driving wavelength, we observe enhanced harmonics at around 47 or 44 nm in both types of plasmas. The two enhanced regions could be attributed to resonances in singly-charged and doubly-charged tin ions, respectively. Our results indicate that the co-existence of lead plasma does not destroy the presence of the enhanced harmonics of tin plasma, and it seems to suggest that the macroscopic properties of the plasma are not the origin of the resonance-enhanced harmonics in tin.https://www.mdpi.com/2218-2004/9/1/1high-order harmonic generationmixed laser-produced plasmaresonance enhancementtwo-color pump |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jingguang Liang Mottamchetty Venkatesh Ganjaboy S. Boltaev Rashid A. Ganeev Yu Hang Lai Chunlei Guo |
spellingShingle |
Jingguang Liang Mottamchetty Venkatesh Ganjaboy S. Boltaev Rashid A. Ganeev Yu Hang Lai Chunlei Guo Investigation of Resonance-Enhanced High-Order Harmonics by Two-Component Laser-Produced Plasmas Atoms high-order harmonic generation mixed laser-produced plasma resonance enhancement two-color pump |
author_facet |
Jingguang Liang Mottamchetty Venkatesh Ganjaboy S. Boltaev Rashid A. Ganeev Yu Hang Lai Chunlei Guo |
author_sort |
Jingguang Liang |
title |
Investigation of Resonance-Enhanced High-Order Harmonics by Two-Component Laser-Produced Plasmas |
title_short |
Investigation of Resonance-Enhanced High-Order Harmonics by Two-Component Laser-Produced Plasmas |
title_full |
Investigation of Resonance-Enhanced High-Order Harmonics by Two-Component Laser-Produced Plasmas |
title_fullStr |
Investigation of Resonance-Enhanced High-Order Harmonics by Two-Component Laser-Produced Plasmas |
title_full_unstemmed |
Investigation of Resonance-Enhanced High-Order Harmonics by Two-Component Laser-Produced Plasmas |
title_sort |
investigation of resonance-enhanced high-order harmonics by two-component laser-produced plasmas |
publisher |
MDPI AG |
series |
Atoms |
issn |
2218-2004 |
publishDate |
2021-01-01 |
description |
Resonance-enhanced harmonics from laser-produced plasma plumes are an interesting phenomenon, whose underlying mechanism is still under debate. In particular, it is unclear whether the macroscopic dispersion properties of the plasma are the key factors for the formation of the enhancement. To shed light on this problem, we perform experiments with two-component plasmas, in which one of the components (tin) is known to be able to generate enhanced harmonics and the other component (lead) is known for altering the overall dispersion properties of the plasma medium. We compare the harmonics spectra from the plasma of pure tin and the plasma of tin/lead alloy. Depending on the driving wavelength, we observe enhanced harmonics at around 47 or 44 nm in both types of plasmas. The two enhanced regions could be attributed to resonances in singly-charged and doubly-charged tin ions, respectively. Our results indicate that the co-existence of lead plasma does not destroy the presence of the enhanced harmonics of tin plasma, and it seems to suggest that the macroscopic properties of the plasma are not the origin of the resonance-enhanced harmonics in tin. |
topic |
high-order harmonic generation mixed laser-produced plasma resonance enhancement two-color pump |
url |
https://www.mdpi.com/2218-2004/9/1/1 |
work_keys_str_mv |
AT jingguangliang investigationofresonanceenhancedhighorderharmonicsbytwocomponentlaserproducedplasmas AT mottamchettyvenkatesh investigationofresonanceenhancedhighorderharmonicsbytwocomponentlaserproducedplasmas AT ganjaboysboltaev investigationofresonanceenhancedhighorderharmonicsbytwocomponentlaserproducedplasmas AT rashidaganeev investigationofresonanceenhancedhighorderharmonicsbytwocomponentlaserproducedplasmas AT yuhanglai investigationofresonanceenhancedhighorderharmonicsbytwocomponentlaserproducedplasmas AT chunleiguo investigationofresonanceenhancedhighorderharmonicsbytwocomponentlaserproducedplasmas |
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