Ivanov, IgorKheifets, Anatoli2015-12-100953-4075http://hdl.handle.net/1885/39267We present a calculation of the harmonics yield from the lithium atom exposed to an intense 3.5 νm mid-infrared laser pulse. Our calculation shows that a considerable increase of the yield of high harmonics generation (HHG) can be achieved if initially tKeywords: Excited states; Infrared radiation; Laser pulses; Lithium compounds; Multiphoton processes; Resonance; Excited 2p states; High harmonics generation; Lithium atoms; Multiphoton resonance; Quasienergy states; Harmonic generation200810.1088/0953-4075/41/11/1156032015-12-09