Influence of spatial beam inhomogeneities on the parameters of a petawatt laser system based on multi-stage parametric amplification
- Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation)
We have developed a technique for investigating the evolution of spatial inhomogeneities in high-power laser systems based on multi-stage parametric amplification. A linearised model of the inhomogeneity development is first devised for parametric amplification with the small-scale self-focusing taken into account. It is shown that the application of this model gives the results consistent (with high accuracy and in a wide range of inhomogeneity parameters) with the calculation without approximations. Using the linearised model, we have analysed the development of spatial inhomogeneities in a petawatt laser system based on multi-stage parametric amplification, developed at the Institute of Laser Physics, Siberian Branch of the Russian Academy of Sciences (ILP SB RAS). (control of laser radiation parameters)
- OSTI ID:
- 22163116
- Journal Information:
- Quantum Electronics (Woodbury, N.Y.), Vol. 43, Issue 5; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
- Country of Publication:
- United States
- Language:
- English
Similar Records
Optimisation of wide-band parametric amplification stages of a femtosecond laser system with coherent combining of fields
New type of large-scale experiments for laboratory astrophysics with collimated jets of laser plasma in a transverse magnetic field