Long-range third-harmonic generation in air using ultrashort intense laser pulses

2005 ◽  
Vol 87 (8) ◽  
pp. 081108 ◽  
Author(s):  
F. Théberge ◽  
Q. Luo ◽  
W. Liu ◽  
S. A. Hosseini ◽  
M. Sharifi ◽  
...  
Keyword(s):  
Long Range ◽  
Harmonic Generation ◽  
Laser Pulses ◽  
Third Harmonic Generation ◽  
Intense Laser ◽  
Third Harmonic ◽  
Intense Laser Pulses

scholarly journals Ultrafast Third-Order Nonlinear Optical Response Excited by fs Laser Pulses at 1550 nm in GaN Crystals

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3194
Author(s):  
Adrian Petris ◽  
Petronela Gheorghe ◽  
Tudor Braniste ◽  
Ion Tiginyanu
Keyword(s):  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Laser Pulses ◽  
Third Harmonic Generation ◽  
High Repetition Rate ◽  
Third Order ◽  
Third Harmonic ◽  
The Third ◽  
High Repetition ◽  
Gan Crystal

The ultrafast third-order optical nonlinearity of c-plane GaN crystal, excited by ultrashort (fs) high-repetition-rate laser pulses at 1550 nm, wavelength important for optical communications, is investigated for the first time by optical third-harmonic generation in non-phase-matching conditions. As the thermo-optic effect that can arise in the sample by cumulative thermal effects induced by high-repetition-rate laser pulses cannot be responsible for the third-harmonic generation, the ultrafast nonlinear optical effect of solely electronic origin is the only one involved in this process. The third-order nonlinear optical susceptibility of GaN crystal responsible for the third-harmonic generation process, an important indicative parameter for the potential use of this material in ultrafast photonic functionalities, is determined.

Coupled Dynamics of Electrons and Nuclei in a Molecule Interacting with Ultrashort, Ultra-Intense Laser Pulses

1997 ◽  
Vol 491 ◽  
Author(s):  
S. Khosravi ◽  
R. E. Allen
Keyword(s):  
Harmonic Generation ◽  
Laser Pulses ◽  
Intense Laser ◽  
Electronic Transitions ◽  
Coupled Dynamics ◽  
Electron Population ◽  
Intense Laser Pulses ◽  
Bond Softening ◽  
Population Trapping

ABSTRACTWe have developed a technique for treating the coupled dynamics of electrons and nuclei in a molecule which is subjected to ultrashort and ultra-intense laser pulses. This technique has been employed in quantitatively accurate simulations for . Many interesting phenomena have been observed, including photodissociation, bond softening, above-threshold dissociation, ion-population trapping, electron-population trapping, sudden electronic transitions, Rabi flopping, and harmonic generation. Some representative results are shown here.

Nuclear correlation in ionization and harmonic generation ofH2+in short intense laser pulses

2001 ◽  
Vol 65 (1) ◽  
Author(s):  
Weixing Qu ◽  
Zhaoyang Chen ◽  
Zhizhan Xu ◽  
Christoph H. Keitel
Keyword(s):  
Harmonic Generation ◽  
Laser Pulses ◽  
Intense Laser ◽  
Intense Laser Pulses
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