Raman Amplification with a Flying Focus

Turnbull, D.; Bucht, S.; Davies, A.; Haberberger, D.; Kessler, T.; Shaw, J. L.; Froula, D. H.

doi:10.1103/PhysRevLett.120.024801

Raman Amplification with a Flying Focus

Journal Article · Fri Jan 12 00:00:00 UTC 2018 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.120.024801· OSTI ID:1417648

Turnbull, D. ^[1]; Bucht, S. ^[2]; Davies, A. ^[2]; Haberberger, D. ^[2]; Kessler, T. ^[2]; Shaw, J. L. ^[2]; Froula, D. H. ^[2]

Univ. of Rochester, Rochester, NY (United States); Laboratory for Laser Energetics, University of Rochester
Univ. of Rochester, Rochester, NY (United States)

Here, we propose a new laser amplifier scheme utilizing stimulated Raman scattering in plasma in conjunction with a "flying focus" - a chromatic focusing system combined with a chirped pump beam that provides spatiotemporal control over the pump's focal spot. Pump intensity isosurfaces are made to propagate at v=-c so as to be in sync with the injected counterpropagating seed pulse. By setting the pump intensity in the interaction region to be just about the ionization threshold of the background gas, an ionization wave is produced that travels at a fixed distance ahead of the seed. Simulations show that this will make it possible to optimize the plasma temperature and mitigate many of the issues that are known to have impacted previous Raman amplification experiments, in particular, the growth of precursors.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Rochester, Rochester, NY (United States). Lab. for Laser Energetics

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0001944; SC0016253

OSTI ID:: 1417648

Alternate ID(s):: OSTI ID: 1416843

Report Number(s):: 2017-179, 1366; 2017-179, 2322, 1366

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 120; ISSN 0031-9007; ISSN PRLTAO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Optical space-time wave packets having arbitrary group velocities in free space Kondakci, H. Esat; Abouraddy, Ayman F. Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-08735-8	journal	February 2019
Spatiotemporal control of laser intensity Froula, Dustin H.; Turnbull, David; Davies, Andrew S. Nature Photonics, Vol. 12, Issue 5 https://doi.org/10.1038/s41566-018-0121-8	journal	March 2018
Enhancement and control of laser wakefields via a backward Raman amplifier Ludwig, J. D.; Masson-Laborde, P. -E.; Hüller, S. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5023387	journal	May 2018
Cascaded chirped photon acceleration for efficient frequency conversion Edwards, Matthew R.; Qu, Kenan; Jia, Qing Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5030022	journal	May 2018
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Flying focus: Spatial and temporal control of intensity for laser-based applications Froula, D. H.; Palastro, J. P.; Turnbull, D. Physics of Plasmas, Vol. 26, Issue 3 https://doi.org/10.1063/1.5086308	journal	March 2019
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Compression of laser pulses by near-forward Raman amplification in plasma Wu, Z.; Chen, Q.; Morozov, A. Physics of Plasmas, Vol. 27, Issue 1 https://doi.org/10.1063/1.5116909	journal	January 2020
Flying focus and its application to plasma-based laser amplifiers Turnbull, D.; Bahk, S-W; Begishev, I. A. Plasma Physics and Controlled Fusion, Vol. 61, Issue 1 https://doi.org/10.1088/1361-6587/aada63	journal	November 2018
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Control of laser light by a plasma immersed in a tunable strong magnetic field Zheng, Xiaolong; Weng, Suming; Ma, Hanghang Optics Express, Vol. 27, Issue 16 https://doi.org/10.1364/oe.27.023529	journal	January 2019
Controlling the velocity of a femtosecond laser pulse using refractive lenses Jolly, Spencer W.; Gobert, Olivier; Jeandet, Antoine Optics Express, Vol. 28, Issue 4 https://doi.org/10.1364/oe.384512	journal	January 2020
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