Multifunctional high-performance 10-J level laser system

2014 ◽  
Vol 12 (4) ◽  
pp. 041402-41406 ◽  
Author(s):  
Yujie Peng Yujie Peng ◽  
Jiangfeng Wang Jiangfeng Wang ◽  
Zhixiang Zhang Zhixiang Zhang ◽  
Dajie huang Dajie huang ◽  
Wei Fan Wei Fan ◽  
...  
Keyword(s):  
High Performance ◽  
Laser System ◽  
Level Laser

High-performance OPCPA laser system

2006 ◽  
Vol 133 ◽  
pp. 701-703
Author(s):  
J. D. Zuegel ◽  
V. Bagnoud ◽  
J. Bromage ◽  
I. A. Begishev ◽  
J. Puth
Keyword(s):  
High Performance ◽  
Laser System

High performance fast-steering mirror for beam control of vehicular high energy laser system

2013 ◽  
Vol 21 (2) ◽  
pp. 336-341 ◽  
Author(s):  
王恒坤 WANG Heng-kun ◽  
张国玉 ZHANG Guo-yu ◽  
郭立红 GUO Li-hong ◽  
刘廷霞 LIU Ting-xia ◽  
王兵 WANG Bing ◽  
...  
Keyword(s):  
High Performance ◽  
Laser System ◽  
High Energy ◽  
Beam Control ◽  
Energy Laser ◽  
High Energy Laser

Laser Scanning Vibrometry and Holographic Interferometry Applied to Vibration Study

2015 ◽  
Vol 801 ◽  
pp. 303-311
Author(s):  
Florin Breaban ◽  
Roger Debuchy ◽  
Didier Defer
Keyword(s):  
Nondestructive Testing ◽  
Modal Analysis ◽  
Holographic Interferometry ◽  
Peak Power ◽  
High Performance ◽  
Laser Scanning ◽  
Laser System ◽  
Industrial Control ◽  
Automotive Technology ◽  
Micro Deformation

The applications of high performance materials in the aerospace and in the automotive technology in the next years need to develop new vibration study, nondestructive testing, predictive maintenance and industrial control methods.The Laser Scanning Vibrometry and Holographic Interferometry methods of vibration study and nondestructive testing by modal analysis are described. The Laser Scanning Vibrometer PSV 400 is made by Polytec GmbH and the PSV software reconstructs the 3D model of the measured micro-deformation of the object. The holographic laser system HLS-3 from Lumonics Inc. has 100 MW ruby laser peak power and 30 ns pulse width.Using mechanical excitation to induce a measurable vibration, the Laser Scanning Vibrometry and Holographic Interferometry modal analysis measurements show up the vibrational signatures and the damaged areas of the objects made by high performance materials - polymers, composites.

THE EFFECTS OF TEMPERATURE ON DIFFERENT LASER TRANSITIONS OF NEODYMIUM ORTHOVANADATE CRYSTAL

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Ganesan Krishnan ◽  
Noriah Bidin
Keyword(s):  
Laser Diode ◽  
Ground State ◽  
Phonon Scattering ◽  
Laser Crystal ◽  
Laser System ◽  
Temperature Dependent ◽  
Laser Transition ◽  
Level Laser ◽  
Effects Of Temperature ◽  
Terminal Level

The temperature dependence of Nd:YVO4 laser crystal pumped by laser diode emitting at 808 nm is studied within the range of 5 oC to 60 oC. The spectroscopy properties of quasi three level at 914 nm (4F3/2 - 4I 9/2) and four level at 1064 nm (4F3/2 - 4I 11/2) are characterized. The lineshape function of the transition lines were broadened as the temperature increases. The phenomenon is attributed to change in linewidth, lineshift and intensity. The linewidths for both laser transition of 914 nm and 1064 nm increases with temperature with the rate of 0.105 cm-1/oC and 0.074 cm-1/oC respectively. The peak of 914nm and 1064 nm lineshapes shifted to a longer wavelength with the rate of 3.0 pm/oC and 4.2 pm/oC respectively which correspond to same amount of lineshift. The lineshape broadening with respect to the temperature is due to one-phonon emission and Raman phonon scattering processes.  The intensities of 914 nm and 1064 nm transition lines are found to be decreased at the rate of 0.15 %/oC and 0.45 %/oC respectively due to non-radiative effects. Quasi three level laser transition is more temperature dependent because it terminal level is close to the ground state which suffers from higher phonon-ion interaction rather than four level laser system.

scholarly journals Development of high-performance KrF and Raman laser facilities for inertial confinement fusion and other applications

1993 ◽  
Vol 11 (2) ◽  
pp. 331-346 ◽  
Author(s):  
M.J. Shaw ◽  
B. Edwards ◽  
G.J. Hirst ◽  
C.J. Hooker ◽  
M.H. Key ◽  
...  
Keyword(s):  
Power Systems ◽  
Inertial Confinement Fusion ◽  
High Performance ◽  
Short Pulse ◽  
High Reliability ◽  
Laser System ◽  
Raman Laser ◽  
Current Status ◽  
Inertial Confinement ◽  
Laser Amplifiers

This article describes the current status of the KrF development programme based on the Sprite laser system at the Rutherford Appleton Laboratory. High reliability and high shot rate have been demonstrated. Using a unique KrF-pumped Raman laser architecture, beam brightness exceeding 2×1019 Wcm-2 sterad-1 giving a focussed intensity >5 ×1017 Wcm-2 has been achieved. The development of transform-limited short-pulse oscillators is shown to be of importance in avoiding spectral broadening in air propagation of high-intensity beams. Beam smoothing of KrF beams in a multiplexed configuration has been demonstrated for the first time. The technique of echelon-free induced spatial incoherence has been shown to produce smooth intensity distributions in the far field, which remain essentially unchanged on amplification. The development of pulsed-power systems capable of exciting multikilojoule laser amplifiers for the next phase of development, the Supersprite system, is briefly discussed.

Optical Absorption and Emission in Rare Earth Heavy Metal Fluoride Glasses

1989 ◽  
Vol 172 ◽  
Author(s):  
R. Pafchek ◽  
J. Aniano ◽  
E. Snitzer ◽  
G. H. Sigel
Keyword(s):  
Laser System ◽  
Laser Level ◽  
Metal Fluoride ◽  
Lower Laser Level ◽  
Co Doping ◽  
Level Laser ◽  
Heavy Metal Fluoride ◽  
Preliminary Study ◽  
Level 1 ◽  
Heavy Metal Fluoride Glasses

AbstractTrivalent thulium is a 4-level laser system which operates in the 1.47μm spectral region. A tunable amplifier at this wavelength is of great interest since it falls in one of the telecommunication windows. For lasing action to occur the relatively long lived 3F4 lower laser level must be quenched to eliminate the self-terminating behavior of thulium. Rosenblatt et al. co-doped Tm and Th into a ZBLAN host to quench the 3F4 lower laser level.[1] Co-doping with Ho offers the possibility of more efficient laser operation, but it must be established whether Ho can effectively quench the lower level of Tm. This preliminary study indicated appreciable energy transfer occurred from the 3F4 level of Tm to the 5I7 level of Ho which decreased the lower laser level lifetime by as much as two orders of magnitude. The subsequent decay of the Ho ions is an issue requiring further investigation.

High-performance OPCPA laser system

2006 ◽  
Author(s):  
J. D. Zuegel ◽  
V. Bagnoud ◽  
J. Bromage ◽  
I. A. Begishev ◽  
J. Puth
Keyword(s):  
High Performance ◽  
Laser System
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