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Demonstration of laser pulse amplification by stimulated Brillouin scattering
| Content Provider | Scilit |
|---|---|
| Author | Guillaume, E. Humphrey, K. Nakamura, H. Trines, R. M. G. M. Heathcote, R. Galimberti, M. Amano, Y. Doria, D. Hicks, G. Higson, E. Kar, S. Sarri, G. Skramic, M. Swain, J. Tang, K. Weston, J. Zak, P. Alves, E. P. Fonseca, R. A. Fiúza, F. Habara, H. Tanaka, K. A. Bingham, R. Borghesi, M. Najmudin, Z. Silva, L. O. Norreys, P. A. |
| Copyright Year | 2014 |
| Description | The energy transfer by stimulated Brillouin backscatter from a long pump pulse (15 ps) to a short seed pulse (1 ps) has been investigated in a proof-of-principle demonstration experiment. The two pulses were both amplified in different beamlines of a Nd:glass laser system, had a central wavelength of 1054 nm and a spectral bandwidth of 2 nm, and crossed each other in an underdense plasma in a counter-propagating geometry, off-set by $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}10^\circ $ . It is shown that the energy transfer and the wavelength of the generated Brillouin peak depend on the plasma density, the intensity of the laser pulses, and the competition between two-plasmon decay and stimulated Raman scatter instabilities. The highest obtained energy transfer from pump to probe pulse is 2.5%, at a plasma density of $0.17 n_{cr}$ , and this energy transfer increases significantly with plasma density. Therefore, our results suggest that much higher efficiencies can be obtained when higher densities (above $0.25 n_{cr}$ ) are used. |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/7DA4BA8BB364FEAC1F801FEA0C5954FD/S2095471914000358a.pdf/div-class-title-demonstration-of-laser-pulse-amplification-by-stimulated-brillouin-scattering-div.pdf |
| ISSN | 20954719 |
| e-ISSN | 20523289 |
| DOI | 10.1017/hpl.2014.35 |
| Journal | High Power Laser Science and Engineering |
| Volume Number | 2 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2014-09-01 |
| Access Restriction | Open |
| Subject Keyword | High Power Laser Science and Engineering Mathematical Physics Laser–plasma Interactions Optical Pulse Generation and Compression Stimulated Brillouin and Raman Scattering fast Optical Processes |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Nuclear Energy and Engineering |
