Observation of VUV radiation at wavelengths in the ωp- and 2ωp-wavelength range emitted from femtosecond laser-plasmas

1997 ◽  
Vol 144 (4-6) ◽  
pp. 217-221 ◽  
Author(s):  
U. Teubner ◽  
D. Altenbernd ◽  
P. Gibbon ◽  
E. Förster ◽  
A. Mysyrowicz ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Wavelength Range ◽  
Laser Plasmas

Kilohertz sources of hard x rays and fast ions with femtosecond laser plasmas

2003 ◽  
Vol 20 (1) ◽  
pp. 224 ◽  
Author(s):  
A. Thoss ◽  
M. Richardson ◽  
G. Korn ◽  
M. Faubel ◽  
H. Stiel ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
X Rays ◽  
Fast Ions ◽  
Laser Plasmas

Polarization-dependent fast-electron emission in high-temporal-contrast femtosecond laser plasmas

2021 ◽  
Vol 63 (4) ◽  
pp. 045015
Author(s):  
Lintong Ke ◽  
Shixia Luan ◽  
Changquan Xia ◽  
M Y Yu ◽  
Ke Feng ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Electron Emission ◽  
Fast Electron ◽  
Temporal Contrast ◽  
Laser Plasmas

Measurement of acceleration in femtosecond laser-plasmas

1998 ◽  
Author(s):  
R. Häßner ◽  
W. Theobald ◽  
S. Niedermeier ◽  
K. Michelmann ◽  
T. Feurer ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Plasmas

Infrared Light Absorption and Emissivity of Silicon Microstructured by Femtosecond Laser in SF6

2011 ◽  
Vol 287-290 ◽  
pp. 364-368 ◽  
Author(s):  
Yuan Li ◽  
Guo Jin Feng ◽  
Li Zhao
Keyword(s):  
Femtosecond Laser ◽  
Wavelength Range ◽  
Light Absorption ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Infrared Light ◽  
Structure Defects ◽  
Wide Wavelength Range ◽  
Different Temperatures ◽  
Tentative Explanation

The surface microstructured silicon prepared by femtosecond laser pulses irradiation in SF6shows significantly enhanced light absorption over a wide wavelength range. Absorptance of microstructured silicon is measured from 2 to 16μm, and the absorptance can up to 0.8 in the measured wavelength range. The absorptance of microstructured silicon increases as the height of spikes increases. Emissivity of microstructured silicon at different temperatures(100°C-400°C) is measured from 2.5μm to 25μm. Greatly enhanced emissivity compared to that of flat silicon was observed. At a certain temperature, with increasing the height of the spikes, the emissivity increases. For a sample with 13–14μm high spikes, the emissivity at a temperature of 100°C is approximately 0.96. A tentative explanation for the high absorptance of microstructured silicon has been carried out from three aspects: impurity states, structure defects and multiple reflection of light between spikes. The excellent properties of microstructured silicon make it a promising candidate for applications of infrared detectors, silicon solar cells, flat blackbody source and so on.

Optical and Wetting Properties of Femtosecond Laser Nanostructured Materials

2011 ◽  
Vol 14 ◽  
pp. 57-67 ◽  
Author(s):  
A.Y. Vorobyev ◽  
Chun Lei Guo
Keyword(s):  
Femtosecond Laser ◽  
Surface Structure ◽  
Nanostructured Materials ◽  
Wavelength Range ◽  
Laser Surface ◽  
Surface Structures ◽  
Capillary Effect ◽  
Liquid Motion ◽  
Surface Nanostructuring ◽  
Wetting Properties

We modify optical and wetting properties of solids using a femtosecond laser surface nanostructuring technique. We demonstrate that this technique allows creating black and color metals. Absorptance of black titanium created in our study is measured to be about 90-97% over a broad wavelength range from the ultraviolet to infrared. Moreover, our technique can be also used for modifying wetting properties of solids. Here, we create a novel surface structure that transforms regular silicon to superwicking. This surface structure makes water run vertically uphill in a gravity defying way. Our study of the liquid motion shows that the extraordinarily strong self-propelling motion of water is due to a capillary effect from the surface structures we created.

Micro x-ray sources from femtosecond laser plasmas

2004 ◽  
Author(s):  
Cristina G. Serbanescu ◽  
Jaime Santiago ◽  
Robert Fedosejevs
Keyword(s):  
Femtosecond Laser ◽  
X Ray ◽  
Laser Plasmas

Optical diagnostics of femtosecond laser plasmas

2001 ◽  
Vol 44 (1) ◽  
pp. 98-102 ◽  
Author(s):  
Yutong Li ◽  
Jie Zhang ◽  
Liming Chen ◽  
Jiangfan Xia ◽  
Hao Teng ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Optical Diagnostics ◽  
Laser Plasmas

Polarized Fluorescence in NADH Two-Photon Excited by Femtosecond Laser Pulses in the Wavelength Range of 720–780 nm

2019 ◽  
Vol 45 (7) ◽  
pp. 672-674 ◽  
Author(s):  
M. E. Sasin ◽  
I. A. Gorbunova ◽  
N. O. Bezverkhnii ◽  
Y. M. Beltukov ◽  
O. S. Vasyutinskii ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Wavelength Range ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Polarized Fluorescence ◽  
Two Photon

High-resolution x-ray spectrometer based on spherically bent crystals for investigations of femtosecond laser plasmas

1998 ◽  
Vol 69 (12) ◽  
pp. 4049-4053 ◽  
Author(s):  
B. K. F. Young ◽  
A. L. Osterheld ◽  
D. F. Price ◽  
R. Shepherd ◽  
R. E. Stewart ◽  
...  
Keyword(s):  
High Resolution ◽  
Femtosecond Laser ◽  
X Ray ◽  
Laser Plasmas ◽  
Bent Crystals
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