期刊
OPTICS LETTERS
卷 48, 期 8, 页码 2038-2041出版社
Optica Publishing Group
DOI: 10.1364/OL.488876
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This study examines the generation of strong harmonics and sum and difference frequencies by propagating three pulses with different wavelengths and polarizations through Ag, Au, Pb, B, and C plasmas. The results demonstrate that difference frequency mixing is more efficient compared to the sum frequency mixing. Under optimal conditions for laser-plasma interaction, the intensities of the sum and difference components are almost equal to the intensities of neighboring harmonics attributed to the strong 806 nm pump.
The generation of strong harmonics and sum and differ-ence frequencies using the propagation of three pulses of different wavelengths and polarizations through Ag, Au, Pb, B, and C plasmas is examined. It is demonstrated that the difference frequency mixing is more efficient compared with the sum frequency mixing. At optimal conditions for the laser-plasma interaction, the intensities of the sum and especially the difference components are almost equal to the intensities of neighboring harmonics attributed to the strong 806 nm pump.
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