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

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.

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

Physical Insights into Facilitation of an Unprecedented Complexation Reaction on the Surface of a Doped Quantum Dot Leading to White Light Generation

2021 ◽  
Author(s):  
Sabyasachi Pramanik ◽  
Mihir Manna ◽  
Biswajit Hudait ◽  
Shilaj Roy ◽  
Satyapriya Bhandari
Keyword(s):  
Quantum Dot ◽  
White Light ◽  
Complexation Reaction ◽  
Environmentally Sustainable ◽  
White Light Generation ◽  
Light Generation

Herein we report a complexation reaction between Zn2+ ions, being present on the surface of an orange-red emitting environmentally sustainable Mn2+-doped ZnS QD, and non-emitting copper quinolate complex (CuQ2 complex),...

ChemInform Abstract: Upconversion for White Light Generation by a Single Compound.

ChemInform ◽  
2010 ◽  
Vol 41 (21) ◽  
pp. no-no
Author(s):  
Jiwei Wang ◽  
Peter A. Tanner
Keyword(s):  
White Light ◽  
White Light Generation ◽  
Single Compound ◽  
Light Generation

Efficient white light generation from 2,3-diphenyl-1,2-dihydro-quinoxaline complex

2010 ◽  
Vol 101 (3) ◽  
pp. 639-642 ◽  
Author(s):  
Y. Dwivedi ◽  
S. Kant ◽  
R. N. Rai ◽  
S. B. Rai
Keyword(s):  
White Light ◽  
White Light Generation ◽  
Light Generation
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