Determination of the inertial contribution to the nonlinear refractive index of air, N_2, and O_2 by use of unfocused high-intensity femtosecond laser pulses

1997 ◽  
Vol 14 (3) ◽  
pp. 650 ◽  
Author(s):  
E. T. J. Nibbering ◽  
G. Grillon ◽  
M. A. Franco ◽  
B. S. Prade ◽  
A. Mysyrowicz
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Nonlinear Refractive Index ◽  
High Intensity ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses

Explosion of Atomic Clusters Heated by High Intensity, Femtosecond Laser Pulses

1998 ◽  
pp. 123-130 ◽  
Author(s):  
T. Ditmire ◽  
J. W. G. Tisch ◽  
E. Springate ◽  
M. B. Mason ◽  
N. Hay ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
High Intensity ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Atomic Clusters

Study on the height distribution of atmospheric nonlinear refractive index with a theoretical calculation model

2018 ◽  
Vol 27 (04) ◽  
pp. 1850044
Author(s):  
QingWei Zeng ◽  
Lei Liu ◽  
TaiChang Gao ◽  
Ming Chen ◽  
Qi Wang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Nonlinear Refractive Index ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Lower Atmosphere ◽  
Nonlinear Propagation ◽  
Accurate Estimation ◽  
Height Distribution ◽  
Long Distance

The crucial role of nonlinear propagation effects in the self-guiding of femtosecond laser pulses required accurate representation of nonlinearities to describe them. In this paper, an improved theoretical model has been proposed to study the height distribution of the atmospheric nonlinear refractive index. The results show that the revised model obviously improves accurate estimation of nonlinear index at the long wavelength band. Based on the model, we also found the atmospheric nonlinear refractive index differs much from the lower atmosphere to the upper atmosphere. Our results are essential for engineering applications based on the long-distance ultrashort laser pulses’ transmission in diverse atmosphere.

In situ observation of photoinduced refractive-index changes in filaments formed in glasses by femtosecond laser pulses

2001 ◽  
Vol 26 (1) ◽  
pp. 19 ◽  
Author(s):  
Kazuhiro Yamada ◽  
Wataru Watanabe ◽  
Tadamasa Toma ◽  
Kazuyoshi Itoh ◽  
Junji Nishii
Keyword(s):  
Refractive Index ◽  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
In Situ Observation ◽  
Index Changes
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