scholarly journals Nonperturbative generation of above-threshold harmonics from pre-excited argon atoms in intense mid-infrared laser fields

2017 ◽  
Vol 5 ◽  
Author(s):  
Guihua Li ◽  
Hongqiang Xie ◽  
Ziting Li ◽  
Jinping Yao ◽  
Wei Chu ◽  
...  
Keyword(s):  
Excited State ◽  
Femtosecond Laser ◽  
Pulse Energy ◽  
Laser Pulses ◽  
Infrared Laser ◽  
Femtosecond Laser Pulses ◽  
Probe Laser ◽  
Laser Fields ◽  
Mid Infrared ◽  
Highly Nonlinear

We experimentally investigate the generation of above-threshold harmonics completely from argon atoms on an excited state using mid-infrared femtosecond laser pulses. The highly nonlinear dependences of the observed signal on the pulse energy and polarization of the probe laser pulses indicate its nonperturbative characteristic.

Spin dynamics excited with mid-infrared femtosecond laser pulses

2010 ◽  
Author(s):  
A. Zagdoud ◽  
M. Vomir ◽  
M. Albrecht ◽  
M. Barthelemy ◽  
J.-Y. Bigot
Keyword(s):  
Femtosecond Laser ◽  
Spin Dynamics ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Mid Infrared

Femtosecond Laser Ablation of Zr55Al10Ni5Cu30 Bulk Metallic Glass

2007 ◽  
Vol 539-543 ◽  
pp. 1951-1954 ◽  
Author(s):  
Tomokazu Sano ◽  
Kengo Takahashi ◽  
Akio Hirose ◽  
Kojiro F. Kobayashi
Keyword(s):  
Laser Ablation ◽  
Metallic Glass ◽  
Femtosecond Laser ◽  
Bulk Metallic Glass ◽  
Pulse Energy ◽  
Femtosecond Laser Ablation ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Ablation Depth ◽  
Polished Surface

Dependence of the femtosecond laser ablation depth on the laser pulse energy was investigated for Zr55Al10Ni5Cu30 bulk metallic glass. Investigation of the femtosecond laser ablation of bulk metallic glasses has not been reported. Femtosecond laser pulses (wavelength of 800 nm, pulse width of 100 fs, pulse energies of 2 – 900 μJ) were focused and irradiated on the polished surface of metals in air. The ablation depth of the metallic glass is deeper than that of its crystallized metal at a pulse energy in the strong ablation region. We suggest that the energy loss at grain boundaries of hot electrons which is accelerated by the laser electric field influence the ablation depth in the strong ablation region.

Multiwavelength amplified harmonic emissions from carbon dioxide pumped by mid-infrared femtosecond laser pulses

2012 ◽  
Vol 97 (6) ◽  
pp. 64004 ◽  
Author(s):  
Wei Chu ◽  
Bin Zeng ◽  
Jinping Yao ◽  
Huailiang Xu ◽  
Jielei Ni ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Mid Infrared

Inscription of optical waveguides in crystalline silicon by mid-infrared femtosecond laser pulses

2005 ◽  
Vol 30 (9) ◽  
pp. 964 ◽  
Author(s):  
Amir H. Nejadmalayeri ◽  
Peter R. Herman ◽  
Jonas Burghoff ◽  
Matthias Will ◽  
Stefan Nolte ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Optical Waveguides ◽  
Crystalline Silicon ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Mid Infrared
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