It is shown that the possibility to create the free electron laser without inversion (FELWI) has
a threshold behavior on the field of intensity of amplified wave. In the collective approach …

For a free-electron laser without inversion (FELWI), estimates of the threshold laser power
are found. The interaction induced deviation angle of electrons in the first undulator is found …

The interaction between noncolinear laser and relativistic electron beams in a static
magnetic undulator has been studied within the framework of dispersion equations. For a …

The possibility of creating free electron lasers without inversion (FELWI) is shown to have
threshold character with respect to the intensity of wave to be amplified. A description of …

The equations of motion of particles in free electron lasers without inversion (FELWI) were
obtained using the Hamilton formalism. An one-dimensional decoupled phase equation of …

The spatial amplification of a wave in a magnetostatic undulator with noncollinear electron
and laser beams is studied in the framework of the dispersion relation for single-frequency …

We have studied the feasibility of amplification without population inversion (AWI) in LiH
molecule for three-level ladder, V, and Λ schemes. We have shown the salient features of …

The free electron laser (FEL) has lived up to its promise as given in (Madey 1971 J. Appl.
Phys. 42 1906) to wit:'As shall be seen, finite gain is available... from the far-infrared through …

We study the control over spectral hole burning in four-level N-type system via
spontaneously generated coherence (SGC) and Kerr nonlinearity in an inhomogeneous …

We investigate the absorption spectra of a probe laser in warm rubidium atoms driven into
the four-level N configuration. Our numerical calculations show that there are six (two) …