scholarly journals High-energy, short-pulse gas laser systems

1973 ◽  
Author(s):  
C. Fenstermacher
Keyword(s):  
Short Pulse ◽  
High Energy ◽  
Gas Laser ◽  
Laser Systems

scholarly journals High-energy short-pulse carbon dioxide lasers

1980 ◽  
Vol 298 (1439) ◽  
pp. 377-391 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Laser ◽  
Short Pulse ◽  
High Energy ◽  
Carbon Dioxide Lasers ◽  
High Quality ◽  
Pulse Generators ◽  
The Status ◽  
Laser Systems ◽  
Scientific Laboratory

Lasers for fusion application represent a special class of short-pulse generators: not only must they generate extremely short temporal pulses of high quality, but they must do this at ultra-high powers and satisfy other stringent requirements. This paper presents the status of the research and development of carbon dioxide laser systems at the Los Alamos Scientific Laboratory, vis-a-vis the fusion requirements.

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.

scholarly journals Boosted acceleration of protons by tailored ultra-thin foil targets

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Vural Kaymak ◽  
Esin Aktan ◽  
Mirela Cerchez ◽  
Bentsian Elkin ◽  
Marc Papenheim ◽  
...  
Keyword(s):  
Laser Energy ◽  
Numerical Study ◽  
Short Pulse ◽  
Thin Foil ◽  
High Energy ◽  
High Repetition Rate ◽  
Acceleration Process ◽  
Short Pulse Laser ◽  
Laser Systems ◽  
Target Energy

AbstractWe report on a detailed experimental and numerical study on the boosted acceleration of protons from ultra-thin hemispherical targets utilizing multi-Joule short-pulse laser-systems. For a laser intensity of 1 × 1020 W/cm2 and an on-target energy of only 1.3 J with this setup a proton cut-off energy of 8.5 MeV was achieved, which is a factor of 1.8 higher compared to a flat foil target of the same thickness. While a boost of the acceleration process by additionally injected electrons was observed for sophisticated targets at high-energy laser-systems before, our studies reveal that the process can be utilized over at least two orders of magnitude in intensity and is therefore suitable for a large number of nowadays existing laser-systems. We retrieved a cut-off energy of about 6.5 MeV of proton energy per Joule of incident laser energy, which is a noticeable enhancement with respect to previous results employing this mechanism. The approach presented here has the advantage of using structure-wise simple targets and being sustainable for numerous applications and high repetition rate demands at the same time.

scholarly journals Recent laser upgrades at Sandia’s Z-backlighter facility in order to accommodate new requirements for magnetized liner inertial fusion on the Z-machine

2016 ◽  
Vol 4 ◽  
Author(s):  
Jens Schwarz ◽  
Patrick Rambo ◽  
Darrell Armstrong ◽  
Marius Schollmeier ◽  
Ian Smith ◽  
...  
Keyword(s):  
Adaptive Optics ◽  
Brillouin Scattering ◽  
Short Pulse ◽  
High Energy ◽  
Pulse Mode ◽  
High Energy Density ◽  
Inertial Fusion ◽  
Nanosecond Laser ◽  
Short Pulse Laser ◽  
Laser Systems

The Z-backlighter laser facility primarily consists of two high energy, high-power laser systems. Z-Beamlet laser (ZBL) (Rambo et al., Appl. Opt. 44, 2421 (2005)) is a multi-kJ-class, nanosecond laser operating at 1054 nm which is frequency doubled to 527 nm in order to provide x-ray backlighting of high energy density events on the Z-machine. Z-Petawatt (ZPW) (Schwarz et al., J. Phys.: Conf. Ser. 112, 032020 (2008)) is a petawatt-class system operating at 1054 nm delivering up to 500 J in 500 fs for backlighting and various short-pulse laser experiments (see also Figure 10 for a facility overview). With the development of the magnetized liner inertial fusion (MagLIF) concept on the Z-machine, the primary backlighting missions of ZBL and ZPW have been adjusted accordingly. As a result, we have focused our recent efforts on increasing the output energy of ZBL from 2 to 4 kJ at 527 nm by modifying the fiber front end to now include extra bandwidth (for stimulated Brillouin scattering suppression). The MagLIF concept requires a well-defined/behaved beam for interaction with the pressurized fuel. Hence we have made great efforts to implement an adaptive optics system on ZBL and have explored the use of phase plates. We are also exploring concepts to use ZPW as a backlighter for ZBL driven MagLIF experiments. Alternatively, ZPW could be used as an additional fusion fuel pre-heater or as a temporally flexible high energy pre-pulse. All of these concepts require the ability to operate the ZPW in a nanosecond long-pulse mode, in which the beam can co-propagate with ZBL. Some of the proposed modifications are complete and most of them are well on their way.

Modeling of acoustic wave suppression in pulsed gas laser systems

1982 ◽  
Author(s):  
V. KULKARNY ◽  
J. SHWARTZ ◽  
D. AUSHERMAN ◽  
S. FINK ◽  
K. MAGIAWALA
Keyword(s):  
Acoustic Wave ◽  
Gas Laser ◽  
Laser Systems

State-of-the-art Laser Ceramics for the Next-generation Solid-state Laser

2021 ◽  
Vol 30 (10) ◽  
pp. 22-27
Author(s):  
Ho Jin MA ◽  
Ha-Neul KIM
Keyword(s):  
Solid State ◽  
Mechanical Characteristics ◽  
High Energy ◽  
Solid State Lasers ◽  
Laser Ceramics ◽  
Host Materials ◽  
Laser Systems ◽  
Energy Laser ◽  
High Energy Laser ◽  
Gain Media

Solid-state lasers have aroused many researchers’ interests for a variety of applications in military and industrial fields. Because of the preference for increased output power, Nd:YAG single crystals, which are the most widely used gain media, should be replaced by other more suitable candidates. Polycrystalline sesquioxide ceramics show great potential for use as gain media because their thermal and mechanical characteristics are suitable for use with high-energy laser systems. Recently, novel concepts of the gain media were also introduced. Herein, while briefly looking back on the progress of polycrystalline laser ceramics, we will discuss new interests in host materials and systems.

Versatile High-Energy and Short-Pulse Operation of PHELIX

2009 ◽  
pp. 53-58 ◽  
Author(s):  
T. Kuehl ◽  
V. Bagnoud ◽  
C. Bruske ◽  
S. Borneis ◽  
B. Ecker ◽  
...  
Keyword(s):  
Short Pulse ◽  
High Energy ◽  
Pulse Operation

Yb:YAG disc for high energy laser systems

2017 ◽  
Author(s):  
Karel Nejezchleb ◽  
Jan Kubát ◽  
Jan Šulc ◽  
Helena Jelínková
Keyword(s):  
High Energy ◽  
Laser Systems ◽  
Energy Laser ◽  
High Energy Laser
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