A5059330886- Laser Design and Applications
- Solid State Laser Technologies
- Laser-Plasma Interactions and Diagnostics
- Laser-Matter Interactions and Applications
- Laser Material Processing Techniques
- Advanced Fiber Laser Technologies
- Plasma Applications and Diagnostics
- Semiconductor materials and devices
- Spectroscopy and Laser Applications
- Semiconductor Lasers and Optical Devices
- Plasma Diagnostics and Applications
- Particle Accelerators and Free-Electron Lasers
- High-pressure geophysics and materials
- Nuclear Physics and Applications
- Laser-induced spectroscopy and plasma
- Quantum optics and atomic interactions
- Advanced Optical Sensing Technologies
- Luminescence Properties of Advanced Materials
- Advanced X-ray Imaging Techniques
- Atomic and Subatomic Physics Research
- Advanced Surface Polishing Techniques
- Nanowire Synthesis and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Diamond and Carbon-based Materials Research
- Optical Systems and Laser Technology
Lawrence Livermore National Laboratory
2015-2025
General Atomics (United States)
2014
CEA DAM Île-de-France
2014
Massachusetts Institute of Technology
2014
Fusion Academy
2014
Fusion (United States)
2014
Los Alamos National Laboratory
2014
Rutherford Appleton Laboratory
2014
Sandia National Laboratories
2014
National Ignition Facility
2012
Large laser systems that deliver optical pulses with peak powers exceeding one Petawatt (PW) have been constructed at dozens of research facilities worldwide and fostered in High-Energy-Density (HED) Science, High-Field nonlinear physics [1]. Furthermore, the high intensities 10<sup>18</sup>W/cm<sup>2</sup> allow for efficiently driving secondary sources inherit some properties pulse, e.g. pulse duration, spatial and/or divergence characteristics. In intervening decades since first PW laser,...
We report the demonstration of a diode-pumped Tm:YLF laser operating at 1.88 µm that produces pulse energies up to 3.88 J in 20 ns. The compact system consists Q-switched cavity-dumped oscillator generating 18 mJ pulses, which are then amplified four-pass power amplifier. Energies 38.1 were obtained with long-pulse amplifier operation. These results illustrate high energy storage and extraction capabilities Tm:YLF, opening path peak average mid-infrared solid-state lasers.
We report on the generation of high energy, power pulses in a tabletop diode-pumped Tm:YLF-based laser system, which delivers amplified pulse energies up to 108 J, as well GW peak performance when seeded with nanosecond duration pulses. Furthermore, and efficiency capabilities operating Tm:YLF multi-pulse extraction (MPE) regime were explored by seeding experimental setup multi-kHz burst exhibiting low individual fluence, resulting 3.6 kW average train multi-joule-level an optical-to-optical 19%.
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The National Ignition Facility (NIF) at Lawrence Livermore Laboratory is the first of a kind megajoule-class laser with 192 beams capable delivering over 1.8 MJ and 500TW 351nm light [1], [2]. It has been commissioned operated since 2009 to support wide range missions including study inertial confinement fusion, high energy density physics, material science, laboratory astrophysics. In order advance our understanding, enable short-pulse multi-frame radiographic experiments dense cores cold...
The HAPLS laser system has been commissioned to its first integrated performance milestone, delivering pulses with 16J sub-30fs duration at a 3⅓Hz repetition rate. This all-diode-pumped petawatt-class offers the average powers required for secondary source applications.
Abstract Large scale laser facilities are needed to advance the energy frontier in high physics and accelerator physics. Laser plasma accelerators core advanced concepts aimed at reaching TeV electron colliders. In these facilities, intense pulses drive plasmas used accelerate electrons energies remarkably short distances. A could principle reach with an accelerating length that is 1000 times shorter than conventional RF based accelerators. Notionally, driven particle beam beyond state of...
We report on the demonstration of a diode-pumped, Tm:YLF-based, chirped pulse amplification laser system operating at λ ≈ 1.9 µm that produces amplified energies exceeding 1.5 J using single 8-pass power amplifier. The pulses are subsequently compressed to sub-300 fs durations by diffraction grating pair, producing record >1 TW peak pulses. To best our knowledge, this is highest demonstrated for any solid-state, near-2 architecture and illustrates potential Tm:YLF next generation high-power,...
Photoassociation of alkali-rare gas atomic collision pairs provides an alternative approach to optically pumping alkali lasers. Lasing on the 6 P21/2→6 S21/2 (D1) transition Cs has been observed when blue satellite P23/2←6 (D2) transition, peaking at ∼837 nm for mixtures vapor, Ar, and ethane, is pumped by a pulsed dye laser. For 50% output coupling, laser threshold with respect absorbed pump energy ∼40 μJ T=435 K slope efficiency approaches 10%. The measured spectral breadth (≳5 410 K) will...
Overview of the laser systems being built for ELI-Beamlines is presented. The facility will make available high-brightness multi-TW ultrashort pulses at kHz repetition rate, PW 10 Hz rate pulses, and kilojoule nanosecond generation peak power. lasers extensively employ emerging technology diode-pumped solid-state (DPSSL) to pump OPCPA Ti:sapphire broadband amplifiers. These provide user community with cutting-edge resources programmatic research in applications high-intensity X-ray sources,...
Novel architectures of Petawatt-class, high peak power laser systems that allow operating at repetition rates are opening a new arena commercial applications secondary sources and discovery science. The natural path to higher average is the reduction total heat load induced generated in gain medium eliminating other inefficiencies with goal turn more energy into photons while maintaining good beam quality. However, architecture must be tailored specific application parameters such as...
We report on the design, performance, and qualification of injection laser system designed to deliver joule-level chirped pulse beamlets arranged in dual rectangular beam formats into two main amplifier beamlines National Ignition Facility. The is meet requirements Advanced Radiographic Capability upgrade with features that adjustability, long-term reliability.
Excimer-pumped alkali vapor lasers (XPALs) are a new class of photoassociation which take advantage the spectrally broad absorption profiles alkali-rare gas collision pairs. In these systems, transient molecules photopumped from thermal continuum to dissociative X<sup>2</sup>Σ<sup>+</sup> <sub>1/2</sub> interaction potential, subsequently populating n<sup>2</sup>P<sub>3/2</sub> state alkali. The ≥5 nm and quantum efficiencies >98% have been observed in oscillator experiments,...
Overview of progress in construction and testing the laser systems ELI-Beamlines, accomplished since 2015, is presented. Good has been achieved all four lasers based largely on technology diode-pumped solid state (DPSSL). The first part L1 laser, designed to provide 200 mJ <15 fs pulses at 1 kHz repetition rate, up running. L2 a development line employing 10 J / Hz cryogenic gas-cooled pump which recently equipped with an advanced engine. Operation L3-HAPLS system, using DPSSL Ti:sapphire...
The exciplex pumped alkali laser (XPAL) system was recently demonstrated in mixtures of Cs vapor, Ar, and ethane, by pumping Cs-Ar atomic collision pairs subsequent dissociation diatomic, electronically-excited CsAr molecules (exciplexes or excimers). Because the addition states, modeling XPAL is far more complicated than classic diode (DPAL) modeling. In this paper we discuss BLAZE-V multi-dimensional new compare with experiments.
Petawatt laser applications, such as plasma acceleration, EUV generation, neutron and materials processing are average-power limited. However, the highest petawatt-class to date has an average power of less than 1 kW. Scaling Petawatt-class lasers beyond 10 kW requires a paradigm shift in design. To date, scaling been accomplished by increasing repetition rate single-shot lasers, which each shot represents complete pump/extraction cycle. We propose alternative scheme, multipulse extraction,...
High intensity and high energy laser facilities place increasing demands on optical components, requiring large surface area optics with exacting specifications. Petawatt lasers are energy, short-pulse systems generally based chirped-pulse amplification, where an initial low short pulse is stretched, amplified, then recompressed to produce fs ps high-power pulses. In such petawatt lasers, the highest placed final optics, including gratings which compress pulses mirrors direct focus beams....
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text Thomas M. Spinka and Constantin Haefner, "High-Average-Power Ultrafast Lasers," Optics & Photonics News 28(10), 26-33 (2017) Export BibTex Endnote (RIS) HTML Plain alert Save article
Scaling the particle beam luminosity from laser wakefield accelerators to meet needs of physics community requires a significant, thousand-fold increase in average power driving lasers. Multipulse extraction is promising technique capable scaling high peak lasers by that power. However, several best candidate materials for use multipulse amplifiers lase at wavelengths far 0.8–1.0 μm region which currently dominates research. In particular, we have identified Tm:YLF, lases near 1.9 µm, as...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Addressable microcavity plasma devices with two- or three-electrode, dielectric barrier designs have been fabricated in 20 <formula formulatype="inline"><tex>$\times$</tex></formula> 50 formulatype="inline"> <tex>$\times$</tex></formula> device arrays Si(100) and characterized the rare gases. Each comprises a metal/Si electrode structure, stack, an inverted square pyramid having emitting aperture...
Phase 1 performance ramping of the HAPLS pump laser, a high-energy DPSSL based on Nd:glass, successfully produced 70J at 1053nm from single aperture and 39J 527nm using LBO frequency converter running 3.3Hz repetition rate.
Lasers are of increasing interest to the accelerator community and include applications as diverse stripping electrons from hydrogen atoms, sources for Compton scattering, efficient high repetition rate lasers dielectric laser acceleration, peta-watt peak power wake field energy, short pulse proton ion beam therapy. The requirements these briefly surveyed. State art technologies with potential eventually meet those reviewed. These diode pumped solid state (including cryogenic), fiber lasers,...
An entirely reflective slit spatial filter is proposed to provide filtering, gain isolation, and ASE mitigation for high-energy laser systems. The traditional circular pinhole replaced by two orthogonal slits, which lowers the intensity at plane up orders of magnitude, using optics we reduce dispersion eliminate B-integral effects. A ray trace model shows excellent transmitted wavefront, but also indicates aberrations foci from cylindrical 45°. It expected that use off-axis parabolic mirrors...