scholarly journals The improved program calculating the photomomentum distribution induced by circularly polarized laser

2019 ◽  
Vol 2 (4) ◽  
pp. 126-135
Author(s):  
Vinh Nguyen Thanh Pham
Keyword(s):  
Laser Pulses ◽  
Half Cycle ◽  
Improved Method ◽  
Calculation Time ◽  
Circularly Polarized ◽  
Time Consumption ◽  
Adiabatic Theory

In this paper, we propose an improved method to curtail the time consumption of calculation within the adiabatic theory for the photomomentum distribution (PD) of hydrogen and argon atoms. The method is then extended for threedimensional PD induced by circularly polarized laser. The study is an extension of the work [Phys. Rev. A 92, 043402 (2015)] and a direct comparison of calculating efficiency based on that work is made. The hydrogen and argon atoms exposed to half-cycle laser pulses are used for illustration the applicability of the improved program. The results shows significant reduction in calculation time as well as good consistence between the current results and previous studies.

scholarly journals Circularly-polarized THz wave emission from a micro-thin water flow

2020 ◽  
Author(s):  
Hsin-Hui Huang ◽  
Saulius Juodkazis ◽  
Eugene Gamaly ◽  
Takeshi Nagashima ◽  
Tetsu Yonezawa ◽  
...  
Keyword(s):  
Water Flow ◽  
Wavelength Region ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Intense Laser ◽  
Practical Implementation ◽  
Focal Volume ◽  
Circularly Polarized ◽  
Thz Wave ◽  
Wave Emission

Abstract Intense THz wave sources are highly expected for further progresses in nonlinear THz science and practical implementation of non-ionizing radiation in sensing and communications. Solid-based sources have inherent limits of material breakdown, while intense laser irradiation of liquids is a promising emerging technique for THz wave and hard X-ray emission. Water-based THz emission shows intensity enhancements up to 103 times when laser-pulse pairs with nanosecond delay are used. Here we show circularly- polarized THz wave emission from thin water flow irradiated by two time-separated and linearly-polarized femtosecond laser pulses. THz time-domain spectroscopy reveals the circularly-polarized THz emission dominates 4.7 ns after the first pulse irradiation. THz wave detection delay in the spectroscopy and time-resolved micrography indicate that the THz wave emission originates from the rarefied volume in front of the flow. Radial relaxation of charges (currents) in the focal volume where ponderomotive charge depletion occurred is the origin for the circular polarization; tight focusing localized THz wave emission to the sub-wavelength region.

Circularly polarized sub-1.5 cycle laser pulses at 1.8 μm

2013 ◽  
Vol 115 (1) ◽  
pp. 93-97 ◽  
Author(s):  
Liwei Song ◽  
Chuang Li ◽  
Ya Bai ◽  
Rongjie Xu ◽  
Peng Liu ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Circularly Polarized

scholarly journals Strong field double ionization of Helium with ultra-short phase stabilized circularly polarized laser pulses

2014 ◽  
Vol 488 (3) ◽  
pp. 032010
Author(s):  
M S Schöffler ◽  
X Xie ◽  
S Roither ◽  
D Kartashov ◽  
A Baltuska ◽  
...  
Keyword(s):  
Strong Field ◽  
Laser Pulses ◽  
Double Ionization ◽  
Circularly Polarized

Depolarization of the supercontinuum induced by linearly and circularly polarized femtosecond laser pulses in water

2021 ◽  
Vol 104 (5) ◽  
Author(s):  
Jing Li ◽  
Wenjiang Tan ◽  
Jinhai Si ◽  
Shiyun Tang ◽  
Yang Yang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Circularly Polarized
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