We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Generation of Harmonics of Femtosecond Radiation from the Surface of Aluminum Targets.
- Authors
Ganeev, R. A.; Ishizawa, A.; Kanai, T.; Ozaki, T.; Kuroda, H.
- Abstract
The results of a study of the generation of harmonics from a laser plasma resulting from the inter- action of radiation of femtosecond duration (λ = 1.06 µm, t = 475 fs, and I ∼ 2 × 10[sup 17] W cm[sup -2]) with aluminum targets are presented. The observed frequency shift of harmonics to the short-wavelength region (1.6 and 5.1 nm for the second and fifth harmonics, respectively) is determined by a collisionless absorption resulting from an anomalous skin effect. The efficiencies of conversion into the second and fifth harmonics in an s-polarized pumping field were lower than the conversion efficiencies in a p-polarized pumping field by a factor of eight and a factor of two, respectively (for intensities I < 10[sup 17] W cm[sup -2]). With a further increase in the pumping inten- sity, these values decreased to 0.8 and 0.5, respectively. The mechanisms of such behavior of the conversion process are considered.
- Subjects
ELECTRICAL harmonics; LASER plasmas
- Publication
Optics & Spectroscopy, 2003, Vol 94, Issue 2, p295
- ISSN
0030-400X
- Publication type
Article
- DOI
10.1134/1.1555193