dorsal/arxiv
View SchemaStrong-field approximation for harmonic generation in diatomic molecules
| Authors | Ciprian C. Chirila, Manfred Lein |
|---|---|
| Categories | |
| ArXiv ID | physics/0510246 |
| URL | https://arxiv.org/abs/physics/0510246 |
| DOI | 10.1103/PhysRevA.73.023410 |
Abstract
The generation of high-order harmonics in diatomic molecules is investigated within the framework of the strong-field approximation. We show that the conventional saddle-point approximation is not suitable for large internuclear distances. An adapted saddle-point method that takes into account the molecular structure is presented. We analyze the predictions for the harmonic-generation spectra in both the velocity and the length gauge. At large internuclear separations, we compare the resulting cutoffs with the predictions of the simple-man's model. Good agreement is obtained only by using the adapted saddle-point method combined with the velocity gauge.
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"abstract": "The generation of high-order harmonics in diatomic molecules is investigated\nwithin the framework of the strong-field approximation. We show that the\nconventional saddle-point approximation is not suitable for large internuclear\ndistances. An adapted saddle-point method that takes into account the molecular\nstructure is presented. We analyze the predictions for the harmonic-generation\nspectra in both the velocity and the length gauge. At large internuclear\nseparations, we compare the resulting cutoffs with the predictions of the\nsimple-man\u0027s model. Good agreement is obtained only by using the adapted\nsaddle-point method combined with the velocity gauge.",
"arxiv_id": "physics/0510246",
"authors": [
"Ciprian C. Chirila",
"Manfred Lein"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.73.023410",
"title": "Strong-field approximation for harmonic generation in diatomic molecules",
"url": "https://arxiv.org/abs/physics/0510246"
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