Optical harmonic generation in atomic and molecular hydrogen

✍ Scribed by Jeffrey L. Krause; Kenneth J. Schafer; Kenneth C. Kulander

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 494 KB
• Volume: 178
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(91)87022-4

✦ Synopsis

We compare calculated optical harmonic spectra for the hydrogen molecule and the hydrogen atom in an intense, linearly polarized laser field. The hydrogen atom calculations use an exact, time-dependent method and the hydrogen molecule calculations are performed in a time-dependent Hartree-Fock approximation. In both cases, the laser-matter interaction is treated completely non-perturbatively. We show that if the HZ bond length is stretched so that H2 has the same ionization potential as H, both systems produce remarkably similar harmonic spectra when irradiated with a 1064 nm laser at 1 X lOI or 2X lCY3 W/cm*.