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In this communication, we have examined the influence of light absorption on turning point temperature of self-focusing in the interaction of Gaussian laser beam in plasma. The dielectric function of plasma introduced herein is under weak relativistic and ponderomotive regime. Differential equation for beam-width parameter has been established by using parabolic equation approach under WKB and paraxial...
The absorption properties in heterostructure with the hexagonal boron nitride crystal are investigated theoretically. It is shown to absorb roughly 90% in reststrahlen upper-frequency band at normal incidence. However, the maximum absorption is only 30% in reststrahlen lower-frequency band. The magnetic fields are found to be strongly localized between the interface of the dielectric and hBN crystals...
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