presents several applications of object detection networks in a high-power laser system with a peak power reaching the petawatt level and repetition rate at the hertz level, while laser systems with similar specs are emerging worldwide in the past few years.
the optical shaping of gas target profiles for proton laser induced acceleration experiments are studied by numerical simulations, at the Institute of Plasma Physics & Lasers - IPPL of the Hellenic Mediterranean University – HMU
a research group from Shanghai Institute of Optics and Fine Mechanics (SIOM) reports the experimental results in the commissioning phase of the 10 PW laser beamline of Shanghai Superintense Ultrafast Laser Facility (SULF), achieving high-energy proton beams with energies up to 62.5 MeV
A research scheme of a plasma-driven two-color FEL generation based on matching manipulation technology has been proposed by the FEL group in Shanghai Advanced Research Institute, Chinese Academy of Sciences, which enables to generate a high brightness two-color FEL with ultra-short pulse duration.
An extensive review paper published in High Power Laser Science and Engineering, takes a tour through time of the four major sectors of UK laser research starting with UK academia where the histories of institutions such as the University of Oxford, Imperial College London, and Queen's University Belfast are detailed
Researchers from University of Rochester, report on MTW-OPAL, a new optical parametric amplifier line (OPAL) that has been activated for ultra-intense laser development and science experiments.
Researchers from National University of Defense Technology, China present an all-optical plasma-based scheme to produce a well-directed multi-MeV γ-ray vortex beam with large beam angular momentum (BAM) and high brilliance. Tags: High Power Laser, HPL, On the Cover
In recent years, the plasma wakefield acceleration driven by ultra-short and ultra-intense laser pulses has become increasingly mature, which can produce electron beams with ultra-high beam density and femtosecond beam duration; By using this electron beam, a new table-top radiation light source with collimation, ultrafast and high brightness can be produced.…
The first 1PW laser was commissioned in the USA in the late 1990s with many systems globally coming on-line throughout the 2000s opening up new and exciting areas of science. In the following years many laboratories strived to increase the power, and hence the focussed intensity, to the 10PW regime, to realise new theoretical thresholds of fundamental science. Several lasers throughout the world, are in the process of construction/commissioning to achieve this goal in China, Romania, Czech Republic, and France with others planned in Japan, USA, Russia and the UK. The first of these systems, ELI-NP in Romania, has recently been the first to demonstrate this landmark achievement.
The pursue for high peak power is driven by the uncharted territory of knowledge that this may unlock, from basic science to applied one. The optical path towards these phenomenal powers may be one of the natural ones when we observe the critical role that the light is playing in the universe.
Ultrashort and broadband laser sources are formidable tools for a wide range of scientific areas. In the field of ultrafast science, laser pulses lasting only a few optical cycles are used to generate secondary sources employed in probing matter at atomic scales. Such sources are also widely adopted in applications in ultrafast spectroscopy, pump-probe in chemistry, and optical coherence tomography among many other fields.
Generation of electromagnetic waves was first demonstrated by Heinrich Hertz in 1887 and since then has become a leading subject of research, with an enormous range of applications covering radio communications, electronics, computing, radar technology and multi-wavelength astronomy.…
The ability of high-energy laser systems to provide complex laser pulse shapes has growing importance in many research disciplines such as laser fusion, high-energy-density physics, laboratory astrophysics, and laser conditioning of optical materials.…
Coherent beam combining (CBC) technology is an important technical approach to break through the brightness limitation of a single laser beam, and has become a frontier and hotspot of laser technology research.…
An international team of scientific experts has gathered to examine the current status of ultra-high-powered lasers around the world and look to the future to predict what the next generation of laser systems will offer. The culmination of their work is a major review paper ‘Petawatt and Exawatt Class Lasers Worldwide’, which looks at the historical context of this technology, its current and future use, and direction.
Due to the range of size, density, and resolution demands associated with industrial X-ray radiography, there is not a source that is “one-size fits all”... Altering the source characteristics to deliver what is needed requires continued study. This publication explores the X-ray emission from spatially constrained targets compared to standard foil targets. The research results are published in High Power Laser Science and Engineering, Volume 7, No. 2, 2019 (Armstrong, C. D. , et al. Bremsstrahlung emission from high power laser interactions with constrained targets for industrial radiography.)
Intense THz radiation sources have attracted increasing research interest due to their applications in coherent and incoherent control of matter, light and electron beams.…
With the dawn of new high-power laser and accelerator facilities, modern physics was able to reach extreme states of matter normally found only in the universe or deep inside the core of our planet.…
(note: this has been adapted from the Nobel Prize committees press release) The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics 2018“for groundbreaking inventions in the field of laser physics” with one half to Arthur Ashkin, Bell Laboratories, Holmdel, USA “for the optical tweezers and their application to biological systems” and the other half jointly to Gérard Mourou, École Polytechnique, Palaiseau, France & University of Michigan, Ann Arbor, USA and Donna Strickland, University of Waterloo, Canada “for their method of generating high-intensity, ultra-short optical pulses”.…
Accretion processes are among the most important phenomena in high-energy astrophysics as they are widely believed to provide the power supply in several astrophysical objects (from stellar objects to massive black holes), and are the main source of radiation in a large number of interactive binary systems.…
As laser facilities have grown in size and power, understanding how electromagnetic pulses (EMPs) are generated has become an issue of great practical importance.…
Rigorous cleanliness on the National Ignition Facility (NIF) is essential to assure that 99.5% optical efficiency is maintained on each of its 192 beam lines by minimizing obscuration and contamination-induced laser damage.” said James A. Pryatel and William H. Gourdin from Akima Infrastructure Services and Lawrence Livermore National Laboratory
Prof. Zunqi Lin, co-editor-in-chief of HPL, passed away aged 76 in Shanghai, China, on 28th May. He was one of the pioneers of inertial confinement fusion science in China, and a well-respected scientist in high power laser from Shanghai Institute of Optics and Fine Mechanics. He was elected the academician of CAS in 2003.
When the first targets for the National Ignition Campaign (NIC) at Lawrence Livermore National Laboratory (LLNL) were built to be fielded on the National Ignition Facility (NIF) in the late 2000’s, the assemblies were handcrafted, meticulously measured, and carefully tested. The resulting assemblies were literally one-of-a-kind and fairly fragile pieces of art, as well as fully functional high energy density physics targets. They were true engineering marvels.
On the cover of HPL: ‘Targets for high-repetition rate facilities: needs, challenges and perspectives’ by I. Prencipe et al “An important challenge will be the development of a reliable supply chain of high quality targets,” said Prof.…
On the cover of HPL: ‘Review on high repetition rate and mass-production of the cryogenic targets for laser IFE’, by I.V.…
On the cover of HPL: ‘Proton probing of laser-driven EM pulses travelling in helical coils‘, by H. Ahmed, S. Kar, A.L.…
A few months ago, we responded to a call for papers for a themed issue for Advances in Archaeological Practice entitled “Advances in Archaeological Labor Management.”…
The English language contains a wealth of insults and terms of abuse. Personal insults attack the core and immutable aspects of a person, such as their race, ethnicity, appearance, age, or a disability.…
Even though findings from genetics and other sciences unequivocally refute biological conceptions of race, this erroneous viewpoint remains widespread among the general public.…
The March article of Muses – the arts blog from BJPsych International is the first blog of the series. The blog is written by Dr Dami Ajayi, Specialty Doctor, Barnet Enfield and Haringey Mental Health NHS Foundation Trust and Trainee/Blog Editor, BJPsych International.…
Some disability-related names have dropped out of usage, because they are now considered to be offensive due to their origins. Down Syndrome (Trisomy 21) is one example.…
Archaeology and cultural heritage work have fully entered the digital age. Today, researchers rely on tools like 3D scanners, a variety of GIS software, and Lidar equipped drones to document the past in ways that were unimaginable just a few decades ago.…
The Paper of the Month for March is ‘Impact of omega-3 fatty acid supplementation on clinical manifestations in autism spectrum disorders: an umbrella review of meta-analyses“.…
How long will humankind survive? Besides the fact that we have been able to eliminate ourselves with nuclear weapons for decades, even without a third world war, the challenge to take care of the resources of our planet remains; we need to use them in a way that our children and their children can have a place on Earth as well. In this blog post Andreas Losch discusses his recent review article in the International Journal of Astrobiology, The need of an ethics of planetary sustainability
It is an article of faith among ordinary Filipinos that American troops will die with Filipino troops defending Philippine claims to the Spratly Islands in the South China Sea (SCS).…
Q&A with Editor-in-Chief of the Precision Medicine Journal, Dame Anna Dominiczak, for International day of Women and Girls in Science
More and more research is finding inflammation as a potential contributing factor towards to the development of various mental illnesses. A systematic review was conducted to determine the association between parasitic infection and mental illnesses in various African populations. Two parasite groups were evaluated; helminths and protozoans, and four mental illness classifications; depressive disorders, anxiety disorders, schizotypal disorders and unspecified mental illnesses.
The March article of Muses – the arts blog from BJPsych International is the first blog of the series. The blog is written by Dr Dami Ajayi, Specialty Doctor, Barnet Enfield and Haringey Mental Health NHS Foundation Trust and Trainee/Blog Editor, BJPsych International.…
This is the first post in our new series: “Conversations with Authors.” For our inaugural post, we asked Dr. Vesla Weaver to meet (virtually) with Dr.…
The English language contains a wealth of insults and terms of abuse. Personal insults attack the core and immutable aspects of a person, such as their race, ethnicity, appearance, age, or a disability.…
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Start the Week - ‘Left behind’, but not forgotten - BBC Sounds
Tom Sutcliffe with Paul Collier, Joanna Kusiak and Matthew Xia.
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