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Ganeev RA, Kim VV, Butikova J, Atvars A, Grube J, Sarakovskis A, Ubelis A. High-order harmonics generation in Cd and Pd laser-induced plasmas. OPTICS EXPRESS 2023; 31:26626-26642. [PMID: 37710519 DOI: 10.1364/oe.493754] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 07/08/2023] [Indexed: 09/16/2023]
Abstract
We demonstrate the generation of high-order harmonics of laser pulses in palladium and cadmium plasmas. We adjusted the wavelength of driving pulses to investigate the resonance enhancement in different ranges of extreme ultraviolet region. The summation of incommensurate waves during the two-color pump of Pd and Cd plasmas allowed the generation of a broader range of harmonics. The theoretical aspects of the two-color pump of the laser-induced plasma are discussed.
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Kim VV, Konda SR, Yu W, Li W, Ganeev RA. Harmonics Generation in the Laser-Induced Plasmas of Metal and Semiconductor Carbide Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4228. [PMID: 36500851 PMCID: PMC9740026 DOI: 10.3390/nano12234228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/24/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Carbon-containing plasma is an attractive medium for generation of harmonics of laser pulses in the extreme ultraviolet range. We ablate two metal carbide (B4C and Cr3C2) nanoparticles and silicon carbide (SiC) nanoparticles and generate harmonics after propagation of 35 fs pulses through the laser-induced plasmas. We analyze the spectra, spectral shifts, and splitting of harmonics from nanoparticles-contained plasmas, which demonstrate the chirp-related harmonic cut-off scaling. In addition, we present the simplified two-color pump model calculations of HHG based on the strong field approximation.
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Affiliation(s)
- Vyacheslav V. Kim
- The GPL Photonics Laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
- Laboratory of Nonlinear Optics, Institute of Astronomy, University of Latvia, Jelgavas Iela 3, LV-1004 Riga, Latvia
| | - Srinivasa Rao Konda
- The GPL Photonics Laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Weili Yu
- The GPL Photonics Laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Wei Li
- The GPL Photonics Laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Rashid A. Ganeev
- The GPL Photonics Laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
- Laboratory of Nonlinear Optics, Institute of Astronomy, University of Latvia, Jelgavas Iela 3, LV-1004 Riga, Latvia
- Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, National Research University, Kori Niyozov Street 39, Tashkent 100000, Uzbekistan
- Department of Physics, Voronezh State University, 394006 Voronezh, Russia
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High-order harmonics generation in the laser-induced lead-free perovskites-containing plasmas. Sci Rep 2022; 12:9128. [PMID: 35650247 PMCID: PMC9160093 DOI: 10.1038/s41598-022-13010-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/19/2022] [Indexed: 11/26/2022] Open
Abstract
High-order harmonics generation in the laser-induced plasmas produced on the surfaces of lead-free perovskites is studied. We analyze the harmonics generation in (CH3NH3)2CuCl4 and (CH3NH3)2CuBr4 plasmas during their ablation by the femtosecond, picosecond, and nanosecond pulses. The modifications of the high-order harmonics spectra are studied using the -color pump scheme (800 nm and 400 nm, 40 fs pulses). The influence of the variations of laser chirp and pulse duration on the dynamics of high-order harmonics generation is examined. The spectral shift, chirp-related harmonic cutoff scaling, and the role of the pulse duration of converting and heating laser radiation are examined at different conditions of plasma formation and harmonic generation. The dependencies of the pulse duration and the fluence of heating pulses on the harmonic’s blue shift are found. The effect of harmonics broadening and splitting on the two red- and blue-shifted components is demonstrated.
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