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High harmonic generation

About: High harmonic generation is a research topic. Over the lifetime, 11694 publications have been published within this topic receiving 222650 citations. The topic is also known as: HHG.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the fabrication and characterization of 5mm-long quasi-phase-matched diffusion-bonded GaAs crystals designed for frequency doubling of a CO(2) laser were reported.
Abstract: We report on the fabrication and characterization of 5-mm-long quasi-phase-matched diffusion-bonded GaAs crystals designed for frequency doubling of a CO(2) laser. Second-harmonic generation of a pulsed laser yielded up to 24% peak power efficiency at 20 MW/cm(2) . Tunability and laser damage threshold are also investigated.

56 citations

Journal ArticleDOI
TL;DR: A series of discrete emission peaks is detected from single micrometer-sized droplets from the input IR radiation and extends to the red as a result of four-wave mixing of the input radiation and the multiorder stimulated-Raman-scattering radiation.
Abstract: A series of discrete emission peaks is detected from single micrometer-sized droplets. The series starts at the blue third harmonic of the input IR radiation and extends to the red as a result of four-wave mixing of the input radiation and the multiorder stimulated-Raman-scattering radiation. The detected third-harmonic intensity from a single liquid droplet is several orders of magnitude larger than that from an optical cell containing the same liquid.

56 citations

Journal ArticleDOI
TL;DR: In this paper, the phase of the even harmonic oscillation as a function of the delay between fundamental and second harmonic fields is calculated and its variation with energy is found to be in good agreement with recent experimental results.
Abstract: We investigate the generation of even and odd harmonics using an intense laser and a weak second harmonic field. Our theoretical approach is based on solving the saddle-point equations within the Strong Field Approximation. The phase of the even harmonic oscillation as a function of the delay between fundamental and second harmonic field is calculated and its variation with energy is found to be in good agreement with recent experimental results. We also find that the relationship between this phase variation and the group delay of the attosecond pulses, depends on the intensity and wavelength of the fundamental field as well as the ionization potential of the atom.

56 citations

Book
10 Oct 2012
TL;DR: In this article, the authors present the basic principle of Harmonic Generation in Plasmas Resonance-Induced enhancement of High-Order Harmonic generation in Plasma Cluster-Containing Plasma Plumes.
Abstract: Introduction Basic Principle of Harmonic Generation in Plasmas Resonance-Induced Enhancement of High-Order Harmonic Generation in Plasma Cluster-Containing Plasma Plumes: Attractive Media for High-Order Harmonic Generation of Laser Radiation Applications of Fullerenes for Harmonic Generation Enhancement of Harmonic Yield from Ablation Plumes Recent Developments and Future Perspectives of Plasma HHG.

56 citations

Journal ArticleDOI
TL;DR: The azimuthal dependence of third-order and cascaded second-order nonlinear coupling was used to measure the relative contributions of each to direct third-harmonic generation in beta-barium borate.
Abstract: The azimuthal dependence of third-order and cascaded second-order nonlinear coupling was used to measure the relative contributions of each to direct third-harmonic generation in ?-barium borate. This permitted the measurement of the values of tensor elements ?103, ?113, and ?163 relative to the known ?ij2. Finally, conversion efficiencies to 3? of up to 6% were achieved with a femtosecond chirped-pulse amplification laser with 200 GW/cm2 in collimated beams.

56 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023177
2022438
2021399
2020489
2019516
2018433