Systematic study of highly efficient white light generation in transparent materials using intense femtosecond laser pulses

2005 ◽  
Vol 80 (1) ◽  
pp. 61-66 ◽  
Author(s):  
A.K. Dharmadhikari ◽  
F.A. Rajgara ◽  
D. Mathur
Keyword(s):  
Femtosecond Laser ◽  
Systematic Study ◽  
White Light ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Highly Efficient ◽  
White Light Generation ◽  
Light Generation ◽  
Transparent Materials

scholarly journals White-light generation control with crossing beams of femtosecond laser pulses

2016 ◽  
Vol 24 (1) ◽  
pp. 282 ◽  
Author(s):  
A. A. Kolomenskii ◽  
J. Strohaber ◽  
N. Kaya ◽  
G. Kaya ◽  
A. V. Sokolov ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
White Light ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
White Light Generation ◽  
Light Generation ◽  
Generation Control

Spatio-temporal control of femtosecond laser filamentation and white-light generation

2017 ◽  
Author(s):  
N. Kaya ◽  
G. Kaya ◽  
J. Strohaber ◽  
A. Kolomenskii ◽  
H. Schuessler
Keyword(s):  
Femtosecond Laser ◽  
White Light ◽  
Temporal Control ◽  
White Light Generation ◽  
Light Generation ◽  
Spatio Temporal ◽  
Laser Filamentation

Space-selective laser joining of dissimilar transparent materials using femtosecond laser pulses

2006 ◽  
Vol 89 (2) ◽  
pp. 021106 ◽  
Author(s):  
Wataru Watanabe ◽  
Satoshi Onda ◽  
Takayuki Tamaki ◽  
Kazuyoshi Itoh ◽  
Junji Nishii
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Laser Joining ◽  
Transparent Materials

Experimental study of the effects of femtosecond laser power on the induced-plasma geometry, supercontinuum white light generation and conical emission in air

2020 ◽  
Vol 34 (14) ◽  
pp. 2050152
Author(s):  
A. I. Sanny ◽  
W. M. Edmund Loh
Keyword(s):  
Femtosecond Laser ◽  
White Light ◽  
Laser Power ◽  
Forward Direction ◽  
Geometrical Shape ◽  
Laser Induced Plasma ◽  
Plasma Filament ◽  
White Light Generation ◽  
Conical Emission ◽  
Light Generation

This paper presents the experimental investigation of the changes in the geometrical shape of femtosecond laser-induced plasma in air under different laser power, and its effects on supercontinuum white light generation and conical emission. When a femtosecond laser is focused into a tiny spot in air, optical breakdown of air molecules occurs and this leads to the generation of plasma filament whose geometrical size and shape depend on laser power. This process is then followed by two light-emitting processes, namely supercontinuum white light generation and conical emission, both of which scatter light that reveals the characteristics of the plasma filament. Our experiment shows that the laser-induced plasma becomes thinner and longer at high average laser power but appears thick and round at lower laser power. At higher laser power, conical emission which scatters laser light in the forward direction dominates the scattering process while at lower laser power, it is the scattering of supercontinuum white light in all directions that plays a bigger role. The intricate rainbow-like pattern formed on a white screen located far away in the forward direction reveals sophisticated nonlinear optical processes that take place in conical emission which slowly diminishes as the laser power is gradually reduced.

Fabrication of birefringent microstructures in transparent materials with femtosecond laser pulses

2002 ◽  
Author(s):  
Wataru Watanabe ◽  
Kazuhiro Yamada ◽  
Daisuke Kuroda ◽  
Taishi Shinagawa ◽  
Taishi Asano ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Transparent Materials

Surface Modification Induced by Femtosecond Laser Pulses in Lithium Niobate

2011 ◽  
Vol 142 ◽  
pp. 134-137
Author(s):  
Hong Yun Chen ◽  
Zhen Zhu Wan ◽  
Yan Ling Han
Keyword(s):  
Surface Modification ◽  
Lithium Niobate ◽  
Femtosecond Laser ◽  
Laser Energy ◽  
Laser Pulses ◽  
Sample Surface ◽  
Femtosecond Laser Pulses ◽  
Two Dimensional ◽  
Damage Depth ◽  
Transparent Materials

The interaction between femtoseocnd laser and transparent materials has been studied intensively in recent years. When the femtosecond laser was focused onto the surface of the transparent materials, if the laser fluence applied to the sample exceeds the material’s fluence threshold, ablation occurs. In this paper, we study the surface ablation of lithium niobate by femtosecond laser. We produced a two-dimensional array of voids in the sample surface by varying the number of shots and laser energy, and analyze of the damage depth with the relation to the pulse energy and the number of the pulse. It has important reference on the microfabrication in such materials by femtosecond laser.

Welding of Transparent Materials Using Femtosecond Laser Pulses

2005 ◽  
Vol 44 (No. 22) ◽  
pp. L687-L689 ◽  
Author(s):  
Takayuki Tamaki ◽  
Wataru Watanabe ◽  
Junji Nishii ◽  
Kazuyoshi Itoh
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Transparent Materials

Blue light generation in photonic crystal f ibers with 1-\mm m femtosecond laser pulses

2011 ◽  
Vol 9 (7) ◽  
pp. 071901-71903 ◽  
Author(s):  
张心贲 Xinben Zhang ◽  
戴能利 Nengli Dai ◽  
彭景刚 Jinggang Peng ◽  
李进延 Jinyan Li
Keyword(s):  
Photonic Crystal ◽  
Femtosecond Laser ◽  
Blue Light ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Light Generation
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