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Frequency doubling of multi-terawatt femtosecond pulses.
- Source :
- Applied Physics B: Lasers & Optics; Sep2004, Vol. 79 Issue 5, p547-554, 8p
- Publication Year :
- 2004
-
Abstract
- We present an experimental and theoretical study of the influence of the spatial beam quality (fluence and phase distributions) on the second-harmonic generation in KDP crystals pumped by 180-fs pulses at 790 nm. Conversion efficiency and beam focusability are investigated experimentally and theoretically by the numerical analysis of the second harmonic, considering effects due to the cubic nonlinearity, beam diffraction, group-velocity walk-off, and dispersion of the pulses. It was found that the uniform intensity and phase distributions of the fundamental beam are essential to obtain a high focal intensity of the second-harmonic beam. [ABSTRACT FROM AUTHOR]
- Subjects :
- CRYSTALS
DISPERSION (Chemistry)
ULTRASHORT laser pulses
LASERS
PHYSICS
Subjects
Details
- Language :
- English
- ISSN :
- 09462171
- Volume :
- 79
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Applied Physics B: Lasers & Optics
- Publication Type :
- Academic Journal
- Accession number :
- 14328273
- Full Text :
- https://doi.org/10.1007/s00340-004-1612-5