scholarly journals Pulse fidelity in ultra-high-power (petawatt class) laser systems

2014 ◽  
Vol 2 ◽  
Author(s):  
Colin Danson ◽  
David Neely ◽  
David Hillier
Keyword(s):  
Short Pulse ◽  
High Energy ◽  
Academic Community ◽  
Pulse Generation ◽  
The United Kingdom ◽  
Laser Facility ◽  
Laser Systems ◽  
Ultra Short Pulse ◽  
And Control ◽  
System Designs

Abstract There are several petawatt-scale laser facilities around the world and the fidelity of the pulses to target is critical in achieving the highest focused intensities and the highest possible contrast. The United Kingdom has three such laser facilities which are currently open for access to the academic community: Orion at AWE, Aldermaston and Vulcan & Astra-Gemini at the Central Laser Facility (CLF), STFC (Science and Technology Facilities Council) Rutherford Appleton Laboratory (RAL). These facilities represent the two main classes of petawatt facilities: the mixed OPCPA/Nd:glass high-energy systems of Orion and Vulcan and the ultra-short-pulse Ti:Sapphire system of Astra-Gemini. Many of the techniques used to enhance and control the pulse generation and delivery to target have been pioneered on these facilities. In this paper, we present the system designs which make this possible and discuss the contrast enhancement schemes that have been implemented.

scholarly journals Modeling of High-Energy Particles and Radiation Production for Multipetawatt Laser Facilities

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
D. Raffestin ◽  
D. Batani ◽  
J. Caron ◽  
J. Baggio ◽  
G. Boutoux ◽  
...  
Keyword(s):  
High Power ◽  
Short Pulse ◽  
High Energy ◽  
X Rays ◽  
High Power Laser ◽  
Power Laser ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Laser Systems ◽  
High Energy Particles

The advent of high-energy short-pulse laser beams poses new problems related to radiation protection. The radiation generated in experiments using multipetawatt laser systems leads to prompt doses and potentially to the activation of the materials within the interaction chamber and the experimental hall. Despite many new PW laser facilities are nowadays entering into operation, this question has received little attention until now. In this paper, we evaluate the radiological effects induced by the operation of a high-power laser facility. Two working regimes are considered related to the production of hard X-rays and energetic protons. The methodology is general and may be applied for the design of experiments with any high-power laser systems.

Ultra-short pulse generation for soliton transmission using electroabsorption modulators

1993 ◽  
Vol 12 (4) ◽  
pp. 355-368 ◽  
Author(s):  
Masatoshi Suzuki ◽  
Hideaki Tanaka ◽  
Hidenori Taga ◽  
Noboru Edagawa ◽  
Yuichi Matsushima ◽  
...  
Keyword(s):  
Short Pulse ◽  
Pulse Generation ◽  
Electroabsorption Modulators ◽  
Short Pulse Generation ◽  
Soliton Transmission ◽  
Ultra Short Pulse

Bilayer Bismuth Selenide nanoplatelets based saturable absorber for ultra-short pulse generation (Invited)

2017 ◽  
Vol 395 ◽  
pp. 55-60 ◽  
Author(s):  
Yanhua Xu ◽  
Hanhan Xie ◽  
Guobao Jiang ◽  
Lili Miao ◽  
Ke Wang ◽  
...  
Keyword(s):  
Saturable Absorber ◽  
Short Pulse ◽  
Pulse Generation ◽  
Bismuth Selenide ◽  
Short Pulse Generation ◽  
Ultra Short Pulse

scholarly journals Petawatt Femtosecond Laser Pulses from Titanium-Doped Sapphire Crystal

Crystals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 783
Author(s):  
Hiromitsu Kiriyama ◽  
Alexander S. Pirozhkov ◽  
Mamiko Nishiuchi ◽  
Yuji Fukuda ◽  
Akito Sagisaka ◽  
...  
Keyword(s):  
High Intensity ◽  
Short Pulse ◽  
Beam Quality ◽  
Laser Pulses ◽  
High Energy ◽  
Femtosecond Laser Pulses ◽  
Small Scale ◽  
Sapphire Crystal ◽  
Chirped Pulse Amplification ◽  
Ultra Short Pulse

Ultra-high intensity femtosecond lasers have now become excellent scientific tools for the study of extreme material states in small-scale laboratory settings. The invention of chirped-pulse amplification (CPA) combined with titanium-doped sapphire (Ti:sapphire) crystals have enabled realization of such lasers. The pursuit of ultra-high intensity science and applications is driving worldwide development of new capabilities. A petawatt (PW = 1015 W), femtosecond (fs = 10−15 s), repetitive (0.1 Hz), high beam quality J-KAREN-P (Japan Kansai Advanced Relativistic ENgineering Petawatt) Ti:sapphire CPA laser has been recently constructed and used for accelerating charged particles (ions and electrons) and generating coherent and incoherent ultra-short-pulse, high-energy photon (X-ray) radiation. Ultra-high intensities of 1022 W/cm2 with high temporal contrast of 10−12 and a minimal number of pre-pulses on target has been demonstrated with the J-KAREN-P laser. Here, worldwide ultra-high intensity laser development is summarized, the output performance and spatiotemporal quality improvement of the J-KAREN-P laser are described, and some experimental results are briefly introduced.

scholarly journals Control and ultra-short pulse generation in stimulated Raman backscattering

2016 ◽  
Vol 688 ◽  
pp. 012112 ◽  
Author(s):  
Miloš M. Škorić ◽  
Ljubomir Nikolić ◽  
Ljupčo Hadžievski ◽  
Dimitri Batani ◽  
Seiji Ishiguro ◽  
...  
Keyword(s):  
Short Pulse ◽  
Pulse Generation ◽  
Short Pulse Generation ◽  
Ultra Short Pulse ◽  
Stimulated Raman Backscattering ◽  
Stimulated Raman

Comment on “Ultra-short pulse generation by a topological insulator based saturable absorber” [Appl. Phys. Lett. 101, 211106 (2012)]

2013 ◽  
Vol 103 (10) ◽  
pp. 106101 ◽  
Author(s):  
Jassem Safioui ◽  
François Bernard ◽  
Maïté Swaelens ◽  
Serge Massar ◽  
Pascal Kockaert ◽  
...  
Keyword(s):  
Saturable Absorber ◽  
Topological Insulator ◽  
Short Pulse ◽  
Pulse Generation ◽  
Short Pulse Generation ◽  
Ultra Short Pulse

Focal spot measurement in ultra-intense ultra-short pulse laser facility

2005 ◽  
Author(s):  
Lanqin Liu ◽  
Hansheng Peng ◽  
Kainan Zhou ◽  
Xiaodong Wang ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Focal Spot ◽  
Short Pulse ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser
Sign in / Sign up

Export Citation Format

Share Document