Threshold-related effects on the high energy plateau in above-threshold detachment

Threshold-Related Effects on the High Energy Plateau in Above-Threshold Detachment

We present results of a nonperturbative Floquet study of above-threshold detachment (ATD) of the H – and F – negative ions. Pronounced enhancements of ATD rates in the high-energy plateau region are found as the laser field intensity passes across ponderomotively shifted multiphoton thresholds. Depending on the symmetry of the initial state ( s or p symmetry), the enhancement is found to be mos...

Threshold-related enhancement of the high-energy plateau in above-threshold detachment.

We present nonperturbative theoretical results showing a resonant-like enhancement of above-threshold detachment spectra in the region of the high-energy plateau as the laser intensity sweeps across channel thresholds. This enhancement has a pure quantum origin stemming from well-known threshold phenomena in multichannel problems whose features are clearly demonstrated in our numerical results....

Threshold effects on plateau electron angular distributions in above-threshold detachment

Analytic formulas for above-threshold ionization or detachment plateau spectra

Cavity Solitons in Driven VCSELs above Threshold

CSs have been theoretically predicted and recently experimentally demonstrated in broad area, vertical cavity driven semiconductor lasers (VCSELs) slightly below the lasing threshold. Above threshold, the simple adiabatic elimination of the polarization variable is not correct, leading to oscillatory instabilities with a spuriously high critical wave-number. To achieve real insight on the compl...