Weakly relativistic and ponderomotive effects on self-focusing and self-compression of laser pulses in near critical plasmas

2014 ◽  
Vol 21 (10) ◽  
pp. 103107 ◽  
Author(s):  
B. Bokaei ◽  
A. R. Niknam
Keyword(s):  
Laser Pulses ◽  
Self Focusing

Relativistic self-focusing of fs-laser pulses and their heating effect on the preformed plasma

2005 ◽  
Vol 33 (2) ◽  
pp. 480-481 ◽  
Author(s):  
M. Kaluza ◽  
I.B. Foldes ◽  
E. Racz ◽  
M.I.K. Santala ◽  
G.D. Tsakiris ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Heating Effect ◽  
Self Focusing ◽  
Fs Laser ◽  
Preformed Plasma

Small-scale self-focusing of 200 ps laser pulses in Brillouin amplification

2015 ◽  
Vol 24 (9) ◽  
pp. 094210 ◽  
Author(s):  
Hang Yuan ◽  
Yu-Lei Wang ◽  
Zhi-Wei Lü ◽  
Zhen-Xing Zheng
Keyword(s):  
Laser Pulses ◽  
Small Scale ◽  
Self Focusing

Temporal Evolution of Laser Pulses with Small-Scale Self-Focusing in Different Spatial Positions

2011 ◽  
Vol 38 (3) ◽  
pp. 0302015
Author(s):  
侯彦超 Hou Yanchao ◽  
傅喜泉 Fu Xiquan ◽  
刘辉 Liu Hui
Keyword(s):  
Temporal Evolution ◽  
Laser Pulses ◽  
Small Scale ◽  
Self Focusing

Study on spatiotemporal evolution of chirped femtosecond laser pulses at specific spatial position during small-scale self-focusing

Optik ◽  
2018 ◽  
Vol 155 ◽  
pp. 97-104
Author(s):  
Yangbao Deng ◽  
Shuguang Deng ◽  
Chao Tan ◽  
Cuixiu Xiong ◽  
Guangfu Zhang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Spatial Position ◽  
Small Scale ◽  
Spatiotemporal Evolution ◽  
Self Focusing

scholarly journals Performance comparison of self-focusing with 1053- and 351-nm laser pulses

1999 ◽  
Vol 60 (3) ◽  
pp. 3283-3288 ◽  
Author(s):  
K. A. Tanaka ◽  
H. Hashimoto ◽  
R. Kodama ◽  
K. Mima ◽  
Y. Sentoku ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Performance Comparison ◽  
Self Focusing

Application of self-focusing of ps laser pulses for three-dimensional microstructuring of transparent materials

1998 ◽  
Vol 72 (12) ◽  
pp. 1442-1444 ◽  
Author(s):  
D. Ashkenasi ◽  
H. Varel ◽  
A. Rosenfeld ◽  
S. Henz ◽  
J. Herrmann ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Laser Pulses ◽  
Self Focusing ◽  
Transparent Materials

Relativistic cross-focusing of two coaxial Gaussian laser beams in a plasma

1998 ◽  
Vol 60 (4) ◽  
pp. 811-818 ◽  
Author(s):  
RAJ KUMAR ◽  
H. D. PANDEY ◽  
R. P. SHARMA ◽  
M. KUMAR
Keyword(s):  
Laser Beam ◽  
Relativistic Effect ◽  
Laser Pulses ◽  
The Self ◽  
Laser Beams ◽  
Particle Accelerators ◽  
Wave Excitation ◽  
Homogeneous Plasma ◽  
Self Focusing ◽  
Ponderomotive Nonlinearity

The paper presents a paraxial theory of the relativistic cross-focusing of two coaxial Gaussian laser beams of different frequencies in a homogeneous plasma. We discuss the self-focusing of a weaker laser beam in the plasma due to the optical inhomogeneities introduced by another stronger copropagating laser beam. In the presence of the second stronger beam (Pcr21<P2<Pcr22), the plasma behaves as an oscillatory waveguide for the first, weaker, beam (P1<Pcr11) as it propagates in the plasma. When both the beams are strong (Pcr11,21<P1,2<Pcr12,22), the nonlinearities introduced by the relativistic effect are additive in nature, such that one beam can undergo oscillatory self-focusing and the other simultaneously defocusing, and vice versa. A comparison reveals that cross-focusing due to relativistic nonlinearity is possible for a wider range of powers of the laser pulses than is cross-focusing due to ponderomotive nonlinearity. Relativistic cross-focusing is important in plasma beat-wave excitation and collective laser particle accelerators.

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