Picosecond amplification images the energy transfer between two laser beams

Scilight ◽  
2017 ◽  
Vol 2017 (21) ◽  
pp. 210003
Author(s):  
Samantha Tracy
Keyword(s):  
Energy Transfer ◽  
Laser Beams

A Review of the Theory and Application of Coherent Anti-Stokes Raman Spectroscopy (CARS)

1977 ◽  
Vol 31 (4) ◽  
pp. 253-271 ◽  
Author(s):  
W. M. Tolles ◽  
J. W. Nibler ◽  
J. R. McDonald ◽  
A. B. Harvey
Keyword(s):  
Raman Spectroscopy ◽  
Energy Transfer ◽  
Atmospheric Chemistry ◽  
Reaction Dynamics ◽  
Fluctuation Phenomena ◽  
Laser Beams ◽  
Nonlinear Conversion ◽  
Future Direction ◽  
Anti Stokes ◽  
Raman Beam

Coherent anti-Stokes Raman spectroscopy (CARS) is a relatively new kind of Raman spectroscopy which is based on a nonlinear conversion of two laser beams into a coherent, laser-like Raman beam of high intensity in the anti-Stokes region. The emission is often many orders of magnitude greater than normal Raman scattering and, because of the coherent and anti-Stokes character of radiation, the method is very useful for obtaining Raman spectra of fluorescing samples, gases in discharges, plasmas, combustion, atmospheric chemistry. In this paper we outline the basic theory behind CARS and describe its unusual effects and drawbacks. We review the research to date on various materials, and indicate the possible future direction, utility and applications of CARS such as surface studies, fluctuation phenomena, reaction dynamics, photochemistry, kinetics, relaxation, and energy transfer.

Energy transfer between laser beams due to recording of optical axis gratings in liquid crystals

2006 ◽  
Vol 23 (10) ◽  
pp. 2113 ◽  
Author(s):  
Sarik R. Nersisyan ◽  
Nelson V. Tabiryan ◽  
C. Martin Stickley
Keyword(s):  
Energy Transfer ◽  
Liquid Crystals ◽  
Optical Axis ◽  
Laser Beams

scholarly journals Saturation of cross-beam energy transfer for multispeckled laser beams involving both ion and electron dynamics

2019 ◽  
Vol 26 (8) ◽  
pp. 082708 ◽  
Author(s):  
L. Yin ◽  
B. J. Albright ◽  
D. J. Stark ◽  
W. D. Nystrom ◽  
R. F. Bird ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Beam Energy ◽  
Laser Beams ◽  
Electron Dynamics

Energy transfer between two crossed laser beams in a nonisothermal plasma

2011 ◽  
Vol 18 (2) ◽  
pp. 023108
Author(s):  
Deepak Tripathi ◽  
R. Uma ◽  
V. K. Tripathi
Keyword(s):  
Energy Transfer ◽  
Laser Beams ◽  
Nonisothermal Plasma

scholarly journals Observation of resonant energy transfer between identical-frequency laser beams

1999 ◽  
Vol 6 (5) ◽  
pp. 2144-2149 ◽  
Author(s):  
K. B. Wharton ◽  
R. K. Kirkwood ◽  
S. H. Glenzer ◽  
K. G. Estabrook ◽  
B. B. Afeyan ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Laser Beams ◽  
Resonant Energy ◽  
Resonant Energy Transfer ◽  
Frequency Laser

Observation of Energy Transfer between Frequency-Mismatched Laser Beams in a Large-Scale Plasma

1996 ◽  
Vol 76 (12) ◽  
pp. 2065-2068 ◽  
Author(s):  
R. K. Kirkwood ◽  
B. B. Afeyan ◽  
W. L. Kruer ◽  
B. J. MacGowan ◽  
J. D. Moody ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Large Scale ◽  
Laser Beams

Observation of Energy Transfer between Identical-Frequency Laser Beams in a Flowing Plasma

1998 ◽  
Vol 81 (11) ◽  
pp. 2248-2251 ◽  
Author(s):  
K. B. Wharton ◽  
R. K. Kirkwood ◽  
S. H. Glenzer ◽  
K. G. Estabrook ◽  
B. B. Afeyan ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Laser Beams ◽  
Flowing Plasma ◽  
Frequency Laser

scholarly journals Simulating time-dependent energy transfer between crossed laser beams in an expanding plasma

2005 ◽  
Vol 209 (2) ◽  
pp. 695-729 ◽  
Author(s):  
J.A.F. Hittinger ◽  
M.R. Dorr ◽  
R.L. Berger ◽  
E.A. Williams
Keyword(s):  
Energy Transfer ◽  
Time Dependent ◽  
Laser Beams

scholarly journals Crossed beam energy transfer between optically smoothed laser beams in inhomogeneous plasmas

2020 ◽  
Vol 378 (2184) ◽  
pp. 20200038
Author(s):  
Stefan Hüller ◽  
Gaurav Raj ◽  
Mufei Luo ◽  
Wojciech Rozmus ◽  
Denis Pesme
Keyword(s):  
Energy Transfer ◽  
Inertial Confinement Fusion ◽  
Beam Energy ◽  
Random Phase ◽  
Intense Laser ◽  
Laser Beams ◽  
Band Width ◽  
Flow Profile ◽  
Smoothing Techniques ◽  
Spatio Temporal

Crossed beam energy transfer, CBET, in high-intensity laser–plasma interaction is investigated for the case of optically smoothed laser beams. In the two approaches to laser-driven inertial confinement fusion experiments, the direct-drive and the indirect-drive, CBET is of great importance because it governs the coupling of laser energy to the plasma. We use the two-dimensional wave-coupling code H armony to simulate the transfer between two laser beams with speckle structure that overlap in a plasma with an inhomogeneous flow profile. We compare the CBET dynamics for laser beams with spatial incoherence and with spatio-temporal incoherence; in particular we apply the smoothing techniques using random phase plates (RPPs) and smoothing by spectral dispersion (SSD), respectively. It is found that for laser beams (wavelength λ 0 ) with intensities ( I L ) above I L  ∼ 2 × 10 15  W cm −2 ( λ 0 /0.35 µm) −2 ( T e /keV), both the so-called plasma-induced smoothing as well as self-focusing in intense laser speckles induce temporal incoherence; the latter affects the CBET and the angular distribution of the light transmitted behind the zone of beam overlap. For RPP-smoothed incident beams, the resulting band width of the transmitted light can already be of the same order as the effective band width of the SSD available at major laser facilities. We examine the conditions when spatio-temporal smoothing techniques become efficient for CBET. This article is part of a discussion meeting issue ‘Prospects for high gain inertial fusion energy (part 1)’.

scholarly journals Full-wave and ray-based modeling of cross-beam energy transfer between laser beams with distributed phase plates and polarization smoothing

2017 ◽  
Vol 24 (10) ◽  
pp. 103128 ◽  
Author(s):  
R. K. Follett ◽  
D. H. Edgell ◽  
D. H. Froula ◽  
V. N. Goncharov ◽  
I. V. Igumenshchev ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Beam Energy ◽  
Laser Beams ◽  
Full Wave ◽  
Phase Plates
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