Laser?Induced Stabilization in Atomic and Molecular Systems
Journal
Journal of the Chinese Chemical Society
Journal Volume
42
Journal Issue
2
Pages
325-333
Date Issued
1995
Author(s)
Abstract
Abstract We present a short account of the recent progress in the study of a novel strong‐field phenomenon recently uncovered: atoms and molecules may be stabilized by intense laser fields. The laser‐induced atomic and molecular stabilization arises from quite different origins. We present a complex‐scaling Fourier‐grid Hamiltonian method for the discretization and solutior of the Schrödinger equation within the non‐Hermitian Floquet Hamiltonian formalism. The method provides a simple, yet accurate and highly efficient, new technique for the determination of the complex quasienergies (E RT −Γ/2) of atoms and molecules. The real parts, E RT provide the a.c. Stark shifts, and the imaginary parts, Γ, give rise to multiphoton ionization rates of atoms or multiphoton dissociation rates of molecules. The method is applied to the studies of (i) stabilization and ionization suppression of negative ions in high‐frequency superintense laser fields; (ii) laser‐induced molecular stabilization and chemical bond hardening in strong laser fields.
Type
journal article