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Many high power lasers typically suffer from reduced beam quality due to thermally induced aberrations. Adaptive optics is an effective way to compensate the dynamic aberration. But adaptive optics has not found widespread acceptance due to the cost and complexity. It is not until recently that can the problem be readily solved with the development of microelectromechanical systems (MEMS) based on...
We demonstrate precise control of 0.35-mum-wavelength pulse-shape in SG-III prototype facility. We calculate firstly 1.053-mum-wavelength pulses from the amplifier system and other parameters. Then the required 0.35-um shaped pulse has been produced after 2 or 3 shots.
This study reports the construction of a Russian OPCPA-based laser complex. In this system, a 100 TW laser is taken as a front-end system, supplemented with a KD*P crystal with clear aperture of 20times20 cm, as another cascade of parametric amplification. The pump laser comes from one channel of the "Luch" facility with 2 kJ output pulse energy at the wavelength of 1054 nm. In addition,...
LFEX is a high-energy PW laser aiming for an output of 10 kJ/l-10 ps. In this paper the architecture of multi-pass chirped pulse amplifier with 2x2 arrayed structure, newly designed diamond-shape pulse compressor, pulse shaping technique and other technological developments are reported.
We have achieved pulse shape control of a high-energy PW laser for fast ignition of laser fusion and have successfully demonstrated flat-top pulses of 10 ps with a rise time of 1 ps.
A laser-pulse shaping system of a high-energy PW laser has been developed for fast ignition of laser fusion. We have demonstrated flat-top pulses of 1 Ops with a rise time of 1 ps.
Precise control of new pulse shapes on the OMEGA laser requires 8.5-GHz, 740:1 dynamic-range measurements at the low-energy front end of the system. We present a new integrated measurement and prediction scheme that meets these demands.
We present the results of the development and testing of a new pulse-shaping system based on the temporal stacking of discrete optical picket pulses. This pulse-shaping system produces programmable picket packets that are suitable for numerous OMEGA facility applications
We present a new compact laser oscillator, which delivers incoherent smoothed beam. It yields 50 ns pulse width at repetition rate of 1 Hz. Its 20 mJ energy pulse may be directly injected in high energy laser chain.
Summary form only given. OMEGA is a 60-TW 60-beam, frequency tripled Nd:glass laser system designed to perform precision direct-drive inertial confinement-fusion (ICF) experiments. Construction and activation of the facility was completed in 1995. We report on the system configuration and its performance; then we describe the first stage of enhancements expected to improve the on-target irradiation...
Summary form only given. Many laser plasma interaction experiments with ultrashort laser pulses either require or can significantly benefit from the use of a laser pulse with a temporal profile, which has been optimized for the experiment. We will first demonstrate experimentally that self-phase modulation is a serious issue for amplification of shaped pulses in chirped pulse amplification (CPA) systems...
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