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PbIn6Teio is a new nonlinear material with main transparency window 1.7–31 μm. For the first time optical properties were studied in the THz region, as well as DFG of CO and CO2 laser theoretically and experimentally. The simulation indicated that DFG spectrum can contain dozens of strong lines within 10–13 μm at fixed phase-matching angle. As well CO and CO2 laser lines can be down-converted, respectively,...
High optical harmonics generation process in atomic gases interacting with bichromatic laser field in non-collinear scheme is studied with the aim of polarization state of atomic response investigation in dependence on incident field spatial properties. It is shown that the non-dipole transitions (the impact of which increases with laser field intensity) play the crucial role in discussed process.
New interpretation of the high order harmonic generation in atomic gases interacting with laser fields is presented. The mechanism is in the temporal evolution of atomic electron density spatial distribution in the external laser field.
We present the results of theoretical study on the effective generation of both terahertz radiation and high-order harmonics in the process of a single atom interaction with a multicolor laser field. Numerical results are discussed.
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