Elongated long-lived jet of dense plasma produced by a hollow laser beam

2021 ◽  
Vol 28 (2) ◽  
pp. 023104
Author(s):  
I. P. Tsygvintsev ◽  
I. V. Romanov ◽  
V. L. Paperny
Keyword(s):  
Laser Beam ◽  
Dense Plasma ◽  
Hollow Laser Beam

Theory of atom guidance in a hollow laser beam: dressed-atom approach

2000 ◽  
Vol 17 (6) ◽  
pp. 1039 ◽  
Author(s):  
Xinye Xu ◽  
Yuzhu Wang ◽  
Wonho Jhe
Keyword(s):  
Laser Beam ◽  
Hollow Laser Beam

Generation of hollow laser beam with adjustable profile distribution by using tapered fiber

2021 ◽  
Vol 143 ◽  
pp. 107384
Author(s):  
Shuo Zhang ◽  
Yong Bi ◽  
Weinan Gao ◽  
EnLong Zhang ◽  
Xia Zhao ◽  
...  
Keyword(s):  
Laser Beam ◽  
Tapered Fiber ◽  
Profile Distribution ◽  
Hollow Laser Beam

CO2-Laser—Beam Absorption by a Dense Plasma

1974 ◽  
Vol 32 (15) ◽  
pp. 823-826 ◽  
Author(s):  
E. Fabre ◽  
C. Stenz
Keyword(s):  
Laser Beam ◽  
Co2 Laser ◽  
Dense Plasma

scholarly journals Tailored Transverse Mode Vertical-Cavity Surface-Emitting Laser: Hollow Laser Beam Emission through Circle Aperture

2020 ◽  
Vol 12 (4) ◽  
pp. 1-6
Author(s):  
Yinli Zhou ◽  
Xing Zhang ◽  
Jianwei Zhang ◽  
Youwen Huang ◽  
Yugang Zeng ◽  
...  
Keyword(s):  
Laser Beam ◽  
Transverse Mode ◽  
Cavity Surface ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Hollow Laser Beam ◽  
Vertical Cavity

Process Parameters Control of Deposition of Hollow Cylindrical Part with Internal Wire Feeding through a Hollow Laser Beam

2013 ◽  
Vol 419 ◽  
pp. 305-309 ◽  
Author(s):  
Ming Jun Wu ◽  
Shi Hong Shi ◽  
Ge Yan Fu ◽  
Yu Liu
Keyword(s):  
Laser Beam ◽  
Process Parameters ◽  
Cylindrical Part ◽  
Uneven Surface ◽  
Real Time Control ◽  
Time Control ◽  
Optimization Of Process Parameters ◽  
Wire Feeding ◽  
Formed Part ◽  
Hollow Laser Beam

A new inside-laser coaxial wire feeding processing is adopted that can ensure a good axiality between wire and laser beam through transmitting wire along the centerline of the laser beam. Basing on the optimization of process parameters and single beads cladding experiments, the causes of the uneven surface of the formed part is analyzed. By putting forward a method of the real-time control of the defocusing amount and the laser power, a fine multi-layer hollow rotary part is formed. The formed part has no subsidence damage and crack on the whole cladding layer. The size of the error is small and the hardness of the laser cladding is uniformly distributed.

Guiding cold atoms in a hollow laser beam

1999 ◽  
Vol 60 (6) ◽  
pp. 4796-4804 ◽  
Author(s):  
Xinye Xu ◽  
V. G. Minogin ◽  
Kwanil Lee ◽  
Yuzhu Wang ◽  
Wonho Jhe
Keyword(s):  
Laser Beam ◽  
Cold Atoms ◽  
Hollow Laser Beam

Laser Cladding Forming of Cantilevered Thin-Walled Part Based on Hollow-Laser Beam Inside Powder Feeding Technology2

2015 ◽  
Vol 42 (10) ◽  
pp. 1003003
Author(s):  
石拓 Shi Tuo ◽  
王伊卿 Wang Yiqing ◽  
卢秉恒 Lu Bingheng ◽  
石世宏 Shi Shihong ◽  
陆斌 Lu Bing ◽  
...  
Keyword(s):  
Laser Beam ◽  
Laser Cladding ◽  
Thin Walled ◽  
Hollow Laser Beam ◽  
Powder Feeding

Cross focusing of mixed mode operation in an extra dense plasma

1979 ◽  
Vol 57 (8) ◽  
pp. 1118-1123
Author(s):  
V. S. Soni ◽  
V. P. Nayyar
Keyword(s):  
Laser Beam ◽  
Critical Power ◽  
Dense Plasma ◽  
High Irradiance ◽  
Nonlinear Propagation ◽  
Power Laser ◽  
Self Focusing ◽  
Electron Density Gradient ◽  
Overdense Plasma ◽  
Degenerate Modes

This paper presents a study of the nonlinear propagation of a mixture of two degenerate modes (TEM00 and TEM10) of a high power laser beam in an extradense plasma. The high irradiance inhomogeneous laser beam creates an electron density gradient region in the overdense plasma (n > nc) through which the beam can propagate. The focusing effects have been studied for different power ratios of the two modes (TEM00 mode is considered to be stronger than theTEM10 mode). Self-focusing of the beam in x and y directions for critical power has been extensively studied.

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