alexa Abstract | StarDriver: Recent Results on Beam Smoothing and 2ωpe Mitigation
ISSN: 2469-410X

Journal of Lasers, Optics & Photonics
Open Access

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Research Article Open Access

Abstract

StarDriver was recently proposed as a highly flexible laser driver for inertial confinement fusion and high energy density physics. It envisions a laser drive consisting of very many beams at an aperture and energy where the optical technology is well-developed, used in concert to create a large scale laser driver system. In this paper we describe a StarDriver–class laser with 5120 physical beamlets disposed about the target chamber in 80 evenly spaced ports, each port containing 64 beamlets, each beamlet having about ~1.5 THz of 2D SSD bandwidth and suitable phase plates, an aperture of ~65 mm, an energy of 80 J, and frequency-converted to ~351 nm. StarDriver has many beamlets at an aperture where optical technology is well-developed, and each beamlet has energy ~100 J in a several times diffraction limited beam. The ensemble of beamlets has frequency bandwidth 2%-10%, thereby providing significant control of both hydrodynamic and laser-plasma instabilities The drive at the target is ~400 kJ, has a well-behaved low L-mode spectrum, and smooth’s very rapidly, reaching an asymptotic smoothness of <1% in less than 1 ns. We also review recent results showing that the 2ωpe instability can be significantly reduced by 20 THz bandwidth.

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Author(s): Eimerl D

Keywords

StarDriver, Laser, Physics, Infrared, Femtosecond Laser, Fibre Optical Sensors, Integrated Circuit, Laser Diode, Nano Photonics, Nonlinear Optics, Optical Fiber, Optical Switch, Optics , Oscillations, Photon, Photonic Band Gap, Photonic Crystal, Photonic Crystal Fiber, Photonics, Quantum Dot, Quantum Well, Refractive Index, Semiconductor Laser, Signal Crystal, Single Mode, Laser Spectrum, Two Photonabsorption, Wave Theory,Experimental Physics,Physics Models

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